CCH2 Portal Checklist: Whiting Ranch Wilderness Park Vascular Plant Checklist

Whiting Ranch Wilderness Park Vascular Plant Checklist

Taxa explicitly excluded: Whiting Ranch Wilderness Park - Doubtful or Omitted Taxa

Authors: Contributors: Robert Allen, James Bailey, Rebecca E. Crowe, Emile Fiesler, Kyle Gunther, Fred Roberts, Michael G. Simpson, Ron Vanderhoff

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Locality: Whiting Ranch Wilderness Park, Orange County, California (33.695260, -117.646685)

Abstract:

This is a checklist of the vascular plants of Whiting Ranch Wilderness Park, with cited documentation from herbarium vouchers, iNaturalist observations, and CalFlora observations.

We list plants as:
NATIVE: thought to occur naturally in the area, not human introduced;
NATURALIZED: not native but successfully reproducing and spreading in native habitats without human intervention;
PERSISTING FROM CULTIVATION: originally planted/cultivated, but no longer maintained; not reproducing or escaping into native habitats;
WAIF: not native to the area, having been (unintentionally) human introduced, escaped from cultivation, or naturally dispersed into a natural habitat, but currently not or sparingly reproducing/spreading past initial generation or establishment. Some potential to become naturalized.

We consider documentation to primarily be vouchered herbarium specimens. These are cited and linked to specimens databased through the CCH2: Consortium of California Herbaria 2. We use the Jepson eFlora as the primary source of our taxonomy, but in some cases use the primary literature from more recent studies. We also cite iNaturalist and Calflora observations as secondary sources of valid documention. These are derived from the Whiting Ranch Wilderness Park Plants iNaturalist Project. and Calflora Observations.

To see a map of the most recent 5,000 records from all sources (CCH2, iNaturalist and Calflora), click HERE. Clicking the point will display the taxon name and an option to view the record details.

To date 5 taxa at Whiting Ranch have a listing on the CNPS Inventory of Rare and Endangered Plants of California:
Calochortus catalinae 4.2 G3G4 S3S4
Juglans californica 4.2 G4 S4
Nolina cismontana 1B.2 G3 S3
Phacelia hubbyi 4.2 G4 S4
Romneya coulteri 4.2 G4 S4

Please contact Michael Simpson, Rebecca Crowe, or Ron Vanderhoff for more information on this Checklist and Kyle Gunther for more information on the Whiting Ranch iNaturalist Project.

Notes: To access documentation details, click individual herbarium vouchers, iNaturalists records or Calflora records (for iNat try refreshing the page to see a close-up map). Click the Voucher Mapping icons below the menu to the right to see the current, cumulative distribution and collection details of georeferenced herbarium vouchers in the Park.

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Families: 90

Genera: 311

Species: 489

Total Taxa: 499

Page 1 of 1: 1

AGAVACEAE

Chlorogalum pomeridianum (DC.) Kunth

Chlorogalum pomeridianum var. pomeridianum - Wavy-Leaf Soap-Plant/Amole

NATIVE, iNat Observations; CalFlora Observations

Hesperoyucca whipplei (Torr.) Trel. - Chaparral Yucca

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1298 [IRVC]

Yucca gloriosa L.

NATURALIZED (native to Southeaster North America), iNat Observations; CalFlora Observations

AIZOACEAE

Malephora crocea (Jacq.) Schwantes - Crocea Iceplant

NATURALIZED (native to southern Africa), CalFlora Observations

AMARANTHACEAE

Amaranthus albus L. - White Tumbleweed

NATURALIZED (native to central North America), iNat Observations; CalFlora Observations; Ron Vanderhoff 1091 [IRVC]

Amaranthus retroflexus L. - Redroot Pigweed

NATURALIZED (native to central and eastern North America), iNat Observations; CalFlora Observations

Atriplex sp. - saltbush

Note: Not determined to species, needs study, iNat Observations

Atriplex lentiformis (Torr.) S. Watson - Big Saltbush

NATIVE, iNat Observations

Atriplex semibaccata R. Br. - Australian Saltbush

NATURALIZED (native to Australia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1155 [IRVC]

Atriplex serenana A. Nelson ex Abrams

Atriplex serenana var. serenana - bractscale

NATIVE, iNat Observations

Atriplex suberecta I. Verd. - Peregrine Saltbush

NATURALIZED (native to Australia), iNat Observations ; CalFlora Observations

Blitum californicum S. Wats. - California Goosefoot

NATIVE, Note: See Fuentes-Bazan, et al. 2012. Willdenowia 42:5-24; a recent name change from Chenopodium californicum; iNat Observations; CalFlora Observations; Ron Vanderhoff 1215 [IRVC]

Chenopodiastrum murale (L.) S.Fuentes, Uotila & Borsch - Nettle-Leaf Goosefoot

NATURALIZED (native to Europe). Note: See Fuentes-Bazan, et al. 2012; a recent name change from Chenopodium murale, iNat Observations; CalFlora Observations; Ron Vanderhoff 1234 [IRVC]

Chenopodium album L. - Lamb's Quarters

NATURALIZED (probably native to Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1143 [IRVC]

Chenopodium berlandieri Moq. - Pit-Seed Goosefoot

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1110 [IRVC]

Dysphania pumilio (R. Br.) Mosyakin & Clemants - clammy goosefoot

NATURALIZED (native to Australia), iNat Observations; CalFlora Observations

Salsola sp. - tumbleweed

NATURALIZED Note: Not determined to species, iNat Observations

Salsola australis R. Br. - Australian Tumbleweed

NATURALIZED (possibly native to Australia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1132 [IRVC]

AMARYLLIDACEAE

Amaryllis belladonna L. - Belladonna-Lily

NON-NATIVE; probable WAIF (native to South Africa), iNat Observations; CalFlora Observations

Tulbaghia violacea Harv.

WAIF (native to southern Africa), iNat Observations; CalFlora Observations; Ron Vanderhoff 1481 [IRVC]

ANACARDIACEAE

Malosma laurina (Nutt.) Nutt. ex Abrams - Laurel Sumac

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1467 [IRVC]

Rhus aromatica Aiton - Skunkbrush

NATIVE, iNat Observations

Rhus integrifolia (Nutt.) Benth. & Hook. f. ex W.H. Brewer & S. Watson - Lemonadeberry

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1102 [IRVC]

Rhus integrifolia × R. ovata

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1101 [IRVC]

Rhus ovata S. Watson - Sugar Bush

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1103 [IRVC]

Schinus molle L. - Peruvian Pepper Tree

NATURALIZED (native to South America), iNat Observations; CalFlora Observations; Ron Vanderhoff 1100 [IRVC]

Schinus terebinthifolius Raddi - Brazilian Pepper Tree

NATURALIZED (native to South America), iNat Observations; CalFlora Observations; Ron Vanderhoff 1129 [IRVC]

Toxicodendron diversilobum (Torr. & A. Gray) Greene - Western Poison-Oak

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1186 [IRVC]

APIACEAE

Apiastrum angustifolium Nutt. - Mock-Parsley

NATIVE, iNat Observations; Michael G. Simpson 4939 [IRVC]

Apium graveolens L. - Common Celery

NATURALIZED (native to Eurasia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1395 [IRVC], Ron Vanderhoff 1231 [IRVC]

Conium maculatum L. - Common Poison Hemlock

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1412 [IRVC]

Cyclospermum leptophyllum (Pers.) Sprague - Marsh-Parsley

NATURALIZED (native to South America), iNat Observations

Daucus pusillus Michx. - Rattlesnake Plant

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1422 [IRVC]

Foeniculum vulgare Mill. - Fennel

NATURALIZED (native to southern Europe), iNat Observations; CalFlora Observations

Lomatium lucidum (Nutt.) Jepson - Shiny Lomatium

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1202 [IRVC], Ron Vanderhoff 1438 [IRVC]

Oenanthe sarmentosa Presl ex DC.

NATIVE Note: Second record for Orange Co. Last recorded in 1927, iNat Observations; CalFlora Observations; Ron Vanderhoff 877 [IRVC]

Sanicula arguta Greene ex Coult. & Rose - Sharp-Tooth Sanicle

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1260 [IRVC]

Sanicula crassicaulis Poepp. ex DC. - Pacific Sanicle

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1288 [IRVC]

Tauschia arguta (Torr. & Gray) J.F.Macbr.

NATIVE, iNat Observations

Torilis arvensis (Huds.) Link - Field Hedge-Parsley, Tall Sock-Destroyer

NATURALIZED (native to central and Southern Europe), iNat Observations; CalFlora Observations

APOCYNACEAE

Asclepias eriocarpa Benth. - Kotolo Milkweed

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1429 [IRVC]

Funastrum heterophyllum (Engelm. ex Torr.) Standl. - Hartweg's twinevine

NATIVE, Note: A recent name change from Funastrum cynanchoides var. hartwegii; see Fishbein and Gandhi. 2018. Novon 26:165-167; iNat Observations; CalFlora Observations; Ron Vanderhoff 1105 [IRVC]

Nerium oleander L. - Oleander

NATURALIZED (native locality unclear, possibly southwest Asia), iNat Observations; CalFlora Observations

Vinca major L. - Greater Periwinkle

NATURALIZED (probably native to Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1147 [IRVC]

ARACEAE

Colocasia esculenta (L.) Schott

NATURALIZED (native to tropical Eastern Asia) Note: See Colocasia fontanesii, iNat Observations; CalFlora Observations; Fred M. Roberts 9103A [IRVC], Fred M. Roberts 9103B [IRVC]

Colocasia fontanesii Schott

NATURALIZED (native to tropical Eastern Asia), Note: Some references assign this to C. esculenta var fontanesii. We follow Kew Plants of the World; see also R. Gogoi and S. Borah. 2013. Gardens’ Bulletin Singapore 65(1): 27–37; iNat Observations; CalFlora Observations; Ron Vanderhoff 659 [IRVC], Ron Vanderhoff 1123 [IRVC]

Lemna minuta Kunth - Least Duckweed

NATIVE, CalFlora Observations; Ron Vanderhoff 1112 [IRVC], Ron Vanderhoff 1466 [IRVC]

ARALIACEAE

Hedera helix L.

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1291 [IRVC]

ARECACEAE

Phoenix canariensis H.Wildpret - Canary Island Date Palm

NATURALIZED (native to Canary Islands), iNat Observations; CalFlora Observations; Ron Vanderhoff 1072 [IRVC]

Washingtonia robusta H.Wendl. - Mexican Fan Palm

NATURALIZED (native to Baja California, Sonora, Mexico), iNat Observations; CalFlora Observations; Ron Vanderhoff 1482 [IRVC]

Washingtonia × filibusta hort. ex Hodel

NATURALIZED, Note: Some authors suggest these plants as hybrids (see Hodel et al. 2014. Phytoneuron 68: (1-7)), while others consider these one continuous species with infrataxa (see Villanueva-Almanza et al. Botanical Journal of the Linnean Society 2021), and still others (Jepson eflora) maintain two distinct species.; Fred M. Roberts 9337 [IRVC]

ASPARAGACEAE

Lachenalia aloides (L.f.) Engl.

WAIF (native to the Cape Provence, South Africa), iNat Observations

ASPHODELACEAE

Asphodelus fistulosus L. - Hollow-Stem Asphodel

NATURALIZED (native to Southern Europe), iNat Observations

ASTERACEAE

Achillea millefolium L. - Yarrow, Milfoil

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1441 [IRVC]

Achyrachaena mollis Schau.

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1365 [IRVC]

Acourtia microcephala DC. - Sacapellote

NATIVE, iNat Observations

Ageratina adenophora (Spreng.) R. King & H. Rob. - Sticky Eupatorium

NATURALIZED (native to Mexico), iNat Observations

Ambrosia acanthicarpa Hook. - Annual Bur-Sage

NATIVE, iNat Observations

Ambrosia psilostachya DC. - Western Ragweed

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1095 [IRVC], Fred M. Roberts 9333 [IRVC]

Artemisia californica Less. - Coastal Sagebrush

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1096 [IRVC]

Artemisia douglasiana Bess. - Douglas Mugwort

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1092 [IRVC], Fred M. Roberts 9330 [IRVC]

Artemisia dracunculus L. - Tarragon, Dragon Sagewort

NATIVE, iNat Observations; CalFlora Observations

Baccharis pilularis DC.

Baccharis pilularis subsp. consanguinea (DC.) C. B. Wolf - Chaparral Broom, Coyote Brush

NATIVE, iNat Observations (not all to subsp., but presumed this taxon); CalFlora Observations; Ron Vanderhoff 1423 [IRVC], Ron Vanderhoff 1131 [IRVC]

Baccharis salicifolia (Ruiz & Pav.) Pers. - Mule Fat

NATIVE Note: some references still reference it as B. glutinosa., iNat Observations; CalFlora Observations; Ron Vanderhoff 1090 [IRVC]

Baccharis salicina Torr. & A. Gray - Willow Baccharis

NATIVE, CalFlora Observations; Ron Vanderhoff 1115 [IRVC]

Baccharis sarothroides A. Gray - Broom Baccharis

NATURALIZED in the Park, likely from restoration plantings., CalFlora Observations; Ron Vanderhoff 1108 [IRVC]

Bahiopsis laciniata (A. Gray) E. E. Schilling & Panero - San Diego Sunflower

NATURALIZED in the Park (native to S. San Diego Co., N Baja), CalFlora Observations

Bidens pilosa L. - Common Beggar’s Tick, Spanish Needles

NATURALIZED (native to South and Central America), iNat Observations; CalFlora Observations; Ron Vanderhoff 1135 [IRVC]

Brickellia californica (Torr. & A. Gray) A. Gray - California Brickellbush

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1151 [IRVC]

Carduus pycnocephalus L.

Carduus pycnocephalus subsp. pycnocephalus - Italian Thistle

NATURALIZED (native to Mediterranean) Note: only Carduus pycnocephalus var. pycnocephalus treated as occurring in CA in the Jepson Manual and in FNA., iNat Observations; CalFlora Observations; Ron Vanderhoff 1358 [IRVC]

Centaurea melitensis L. - Tocalote

NATURALIZED (native to southern Europe), iNat Observations; CalFlora Observations

Chaenactis artemisiifolia (Harvey & A. Gray) A. Gray - White Pincushion

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1440 [IRVC]

Chaenactis glabriuscula DC.

Chaenactis glabriuscula var. glabriuscula - Yellow Pincushion

NATIVE, iNat Observations (not all to var., but presumed this taxon); CalFlora Observations (not all to var., but presumed this taxon); CalFlora Observations; Ron Vanderhoff 1282 [IRVC]

Cirsium occidentale (Nutt.) Jepson

Cirsium occidentale var. occidentale - Cobwebby Thistle

NATIVE, iNat Observations (not all to var. but presumed this taxon); CalFlora Observations; Ron Vanderhoff 1269 [IRVC]

Cirsium vulgare (Savi) Ten. - Bull Thistle

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations

Corethrogyne filaginifolia (Hook. & Arn.) Nutt. - Sand-Aster

NATIVE, Note: Treated as a single polymorphic species in the Flora of North America and Jepson eFlora, that concept tentatively accepted here, pending further research. iNat Observations; CalFlora Observations; Ron Vanderhoff 1156 [IRVC], Ron Vanderhoff 1245 [IRVC]

Cotula australis (Sieber ex Spreng.) Hook.f. - Australian Brass-Buttons

NATURALIZED (native to Australia), iNat Observations; Fred M. Roberts 9412 [IRVC], Sandra J. Leatherman 1096 [OBS]

Cynara cardunculus - Artichoke

Cynara cardunculus subsp. flavescens A. Wiklund - Artichoke Thistle, Cardoon

NATURALIZED (native to Southern Europe). Note: Not all observations determined to variety, but likely var. flavescens, iNat Observations; CalFlora Observations; CalFlora Observations; Ron Vanderhoff 1416 [IRVC]

Deinandra fasciculata (DC.) Greene - Fascicled Tarweed

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1458 [IRVC]

Dittrichia graveolens (L.) W. Greuter - Stinkwort

NATURALIZED (native to western Europe, Mediterranean, southwestern Asia), CalFlora Observations; Ron Vanderhoff 1097 [IRVC]

Eclipta prostrata (L.) L. - False Ivy

NATIVE, iNat Observations

Encelia californica Nutt. - California Encelia

NATIVE, iNat Observations; CalFlora Observations; D. S. Park 33 [DAV], Rebecca E. Crowe 675 [OBS]

Encelia farinosa A. Gray ex Torr. - Brittlebush

Native to California, but likely NATURALIZED in the Park. Including likely californica x farinosa hybrids, iNat Observations; CalFlora Observations; Ron Vanderhoff 1163 [IRVC]

Ericameria palmeri (A. Gray) H. M. Hall

Ericameria palmeri var. pachylepis (H.M. Hall) G.L. Nesom ex M.A. Lane & R.L. Hartman - Thickbracted Goldenbush

NATIVE, iNat Observations (not all to variety, but presumed this taxon); CalFlora Observations; Ron Vanderhoff 1098 [IRVC]

Erigeron bonariensis L. - Flax-Leaf Fleabane

NATURALIZED (native to South America), iNat Observations; CalFlora Observations; Ron Vanderhoff 1222 [IRVC]

Erigeron canadensis L. - Horseweed

NATIVE, iNat Observations; CalFlora Observations; Fred M. Roberts 9332 [IRVC]

Erigeron foliosus Nutt.

Erigeron foliosus var. foliosus - Leafy Daisy

NATIVE, iNat Observations (not all to variety but presumed this taxon); CalFlora Observations; Ron Vanderhoff 1439 [IRVC]

Eriophyllum confertiflorum (DC.) A. Gray - Golden-Yarrow

Eriophyllum confertiflorum var. confertiflorum - Long-Stem Golden-Yarrow

NATIVE, iNat Observations (some not to variety); Michael G. Simpson 4927 [IRVC]

Gamochaeta stagnalis (I.M. Johnst.) A.A. Anderberg - Desert Cudweed

NATURALIZED (native to Arizona, New Mexico; northwestern and central Mexico), iNat Observations; CalFlora Observations; Ron Vanderhoff 1434 [IRVC]

Gazania linearis (Thunb.) Druce - Treasure Flower

NATURALIZED (native to Southern Africa), iNat Observations; CalFlora Observations; Ron Vanderhoff 1145 [IRVC]

Gnaphalium palustre Nutt. - Lowland Cudweed

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1435 [IRVC]

Grindelia camporum Greene - Gumplant

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1196 [IRVC]

Gutierrezia sp.

NATIVE Note: Not determined to species.; Ron Vanderhoff 1104 [IRVC]

Gutierrezia californica (DC.) Torr. & A. Gray - California Matchweed

NATIVE, See: Chester, Tom. Plants of Southern California: Gutierrezia californica and G. sarothrae, iNat Observations; CalFlora Observations

Gutierrezia sarothrae (Pursh) Britt. & Rusby - Broom Matchweed

NATIVE, See: Chester, Tom. Plants of Southern California: Gutierrezia californica and G. sarothrae, CalFlora Observations; Ron Vanderhoff 1166 [IRVC]

Hazardia squarrosa (Hook. & Arn.) Greene - Sawtooth Goldenbush

Hazardia squarrosa var. grindelioides (DC.) W. D. Clark - Southern Sawtooth Goldenbush

NATIVE, iNat Observations (some not to variety); CalFlora Observations; Ron Vanderhoff 1159 [IRVC]

Hedypnois rhagadioloides (L.) F.W.Schmidt - Crete Weed

NATURALIZED (native to Mediterranean), iNat Observations; CalFlora Observations; Ron Vanderhoff 1307 [IRVC]

Helianthus annuus L. - Western Sunflower

NATIVE Note: Both the native and naturalized genotype are present at the park, iNat Observations; CalFlora Observations; Ron Vanderhoff 1150 [IRVC]

Helianthus gracilentus A. Gray - Slender Sunflower

NATIVE, iNat Observations

Heterotheca grandiflora Nutt. - Telegraph Weed

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1142 [IRVC], D. S. Park 32--1 [DAV], D. S. Park 32--2 [DAV]

Heterotheca sessiliflora (Nutt.) Shinners - Goldenaster

Heterotheca sessiliflora subsp. echioides (Benth.) Semple - Bristly Goldenaster

NATIVE, iNat Observations (not all to subsp. but presumed this taxon); CalFlora Observations (not all to subsp. but presumed this taxon); CalFlora Observations; Ron Vanderhoff 1396 [IRVC]

Hieracium argutum Nutt.

NATURALIZED (native to Northern Baja); D. S. Park 31 [DAV], D. S. Park 29 [DAV]

Hypochaeris glabra L. - Smooth Cat’s Ear

NATURALIZED (native to Europe), iNat Observations; Michael G. Simpson 4930 [IRVC]

Isocoma menziesii (Hook. & Arn.) G.L. Nesom - Goldenbush

Isocoma menziesii var. vernonioides (Nutt.) G.L. Nesom - Coastal Goldenbush

NATIVE, iNat Observations (not all to var. but presumed this taxon); CalFlora Observations; Ron Vanderhoff 1160 [IRVC]

Lactuca serriola L. - Prickly Lettuce

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1428 [IRVC]

Laennecia coulteri (A. Gray) G.L. Nesom - Coulter’s Fleabane

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1140 [IRVC]

Lasthenia gracilis (DC.) Greene - Common Goldfields

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1353 [IRVC], Ron Vanderhoff 1263 [IRVC]

Layia platyglossa (Fisch. & C. A. Mey.) A. Gray - Tidy Tips

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1394 [IRVC], Ron Vanderhoff 1402 [IRVC]

Logfia filaginoides (Hook. & Arn.) Morefield - California Cottonrose

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1326 [IRVC], Michael G. Simpson 4950 [IRVC]

Logfia gallica (L.) Coss. & Germ. - Narrow-Leaf Cottonrose

NATURALIZED (native to Mediterranean), iNat Observations; CalFlora Observations; Michael G. Simpson 4923 [IRVC]

Malacothrix saxatilis (Nutt.) Torr. & A. Gray

Malacothrix saxatilis var. tenuifolia (Nutt.) A. Gray - Cliff Malacothrix

NATIVE, iNat Observations (not all to var. but presumed this taxon); CalFlora Observations

Matricaria discoidea DC. - Common Pineapple-Weed

NATIVE (stated as native to northwestern North America, northeastern Asia in Jepson eFlora; considered NATURALIZED in some references), iNat Observations; CalFlora Observations; Ron Vanderhoff 1256 [IRVC]

Micropus californicus Fisch. & C. A. Mey.

NATIVE, iNat Observations; CalFlora Observations

Oncosiphon pilulifer (L. f.) Källersjö - Stinknet

NATURALIZED (native to South Africa), iNat Observations; CalFlora Observations; Ron Vanderhoff 1283 [IRVC]

Osmadenia tenella Nutt. - Osmadenia

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1430 [IRVC]

Porophyllum gracile Benth. - Odora

NATIVE, iNat Observations; CalFlora Observations; Fred M. Roberts Jr. 3319 [IRVC], Ron Vanderhoff 1250 [IRVC]

Pseudognaphalium biolettii A.A. Anderberg - Bicolor Cudweed

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1191 [IRVC]

Pseudognaphalium californicum (DC.) A.A. Anderberg - California Everlasting

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1359 [IRVC]

Pseudognaphalium luteoalbum (L.) O.M. Hilliard & B.L. Burtt - Fragrant Everlasting Cudweed

NATURALIZED (native to Eurasia) Note: listed by some references as Helichrysum luteoalbum, iNat Observations

Pseudognaphalium microcephalum (Nutt.) A.A. Anderberg - White Everlasting

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1285 [IRVC]

Pseudognaphalium stramineum (Kunth) A.A. Anderberg - Cotton-Batting Plant

NATIVE, iNat Observations; CalFlora Observations

Psilocarphus brevissimus Nutt.

NATIVE, iNat Observations

Psilocarphus brevissimus var. brevissimus

NATIVE, iNat Observations; CalFlora Observations

Pulicaria paludosa Link - Spanish False-Fleabane

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations; Fred M. Roberts 9329 [IRVC], Ron Vanderhoff 1169 [IRVC]

Rafinesquia californica Nutt. - California Chicory

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1146 [IRVC]

Senecio angustifolius (Thunb.) Willd.

NATURALIZED (native to South Africa), Note: For a discussion of the sp. in So. Cal see Simpson et al. 2023. Madroño 69(3): 286-298. Under aggressive management in park. iNat Observations; CalFlora Observations; Fred M. Roberts 8774 [UCR], Ron Vanderhoff 135 [SDSU], Fred M. Roberts 8774 [IRVC], Ron Vanderhoff 117 [IRVC], more...

Senecio californicus DC. - California Butterweed

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1218 [IRVC]

Senecio vulgaris - Common Groundsel

NATURALIZED (native to Eurasia, n. Africa), iNat Observations; CalFlora Observations; Ron Vanderhoff 1226 [IRVC], Ron Vanderhoff 1228 [IRVC], Sandra J. Leatherman 1111 [OBS]

Silybum marianum (L.) Gaertn. - Milk Thistle

NATIVE (native to Mediterranean), iNat Observations; CalFlora Observations; Michael G. Simpson 4974 [IRVC]

Solidago velutina DC. - Velvety Goldenrod

Solidago velutina subsp. californica (Nutt.) Semple - California Velvety Goldenrod

NATIVE, iNat Observations (not all to subsp. but presumed this taxon); CalFlora Observations (not all to subsp. but presumed this taxon); CalFlora Observations; Ron Vanderhoff 1120 [IRVC]

Soliva sessilis Ruiz & Pav. - Coast Soliva

NATURALIZED (native to South America), iNat Observations; Ron Vanderhoff 1368 [IRVC], Fred M. Roberts 9388 [IRVC]

Sonchus asper (L.) Hill - Prickly Sow-Thistle

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1426 [IRVC]

Sonchus oleraceus L. - Common Sow-Thistle

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1211 [IRVC]

Stebbinsoseris heterocarpa (Nutt.) K.L. Chambers - Grassland Stebbinsoseris

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1310 [IRVC]

Stephanomeria sp.

NATIVE Note: Not determined to species, CalFlora Observations; Ron Vanderhoff 1114 [IRVC]

Stephanomeria diegensis Gottlieb - San Diego Wreath-Plant

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1134 [IRVC]

Stephanomeria exigua - Small Wreath-Plant

NATIVE, iNat Observations

Stylocline gnaphaloides Nutt. - Everlasting Nest-Straw

NATIVE, iNat Observations; CalFlora Observations; Michael G. Simpson 4924 [IRVC], Michael G. Simpson 4947 [IRVC]

Taraxacum erythrospermum Andrz. ex Bess.

NATURALIZED (native to Europe), iNat Observations

Taraxacum officinale F.H.Wigg.

NATURALIZED (native to Europe), iNat Observations

Uropappus lindleyi (DC.) Nutt. - Silver Puffs

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1293 [IRVC], D. S. Park 30 [DAV]

Xanthium spinosum - Spiny Cocklebur

NATURALIZED (nativity confused, perhaps South America), iNat Observations

Xanthium strumarium L. - Cocklebur

NATIVE, iNat Observations; Ron Vanderhoff 1080 [IRVC]

BETULACEAE

Alnus rhombifolia Nutt. - White Alder

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1432 [IRVC]

BORAGINACEAE

Amsinckia intermedia Fisch. & Mey. - Seaside Fiddleneck

NATIVE, iNat Observations; Sandra J. Leatherman 1098 [OBS]

Amsinckia menziesii (Lehm.) A.Nelson & J.F.Macbr. - Small-Flowered Fiddleneck

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1209 [IRVC]

Cryptantha intermedia (A.Gray) Greene - Nievitas Cryptantha

NATIVE Note: Not determined to variety, iNat Observations; CalFlora Observations; Sandra J. Leatherman 1105 [OBS]

Cryptantha intermedia var. intermedia - Nievitas Cryptantha

NATIVE, iNat Observations; CalFlora Observations; Fred M. Roberts 3313 [IRVC]

Cryptantha intermedia var. johnstonii J.F.Macbride - Johnston's Nievitas Cryptantha

NATIVE, iNat Observations; CalFlora Observations; Michael G. Simpson 4922 [SDSU], Michael G. Simpson 4922 [IRVC]

Cryptantha microstachys (Greene ex A.Gray) Greene - Tejon Cryptantha

NATIVE, iNat Observations; CalFlora Observations; Michael G. Simpson 4925 [SDSU], Fred M. Roberts 9405 [IRVC], Michael G. Simpson 4925 [IRVC], Fred M. Roberts 3308 [IRVC], more...

Cryptantha muricata (Hook. & Arn.) A. Nels. & Macbr. - Prickly Cryptantha

Cryptantha muricata var. muricata

NATIVE, iNat Observations; Michael G. Simpson 4951 [SDSU], Michael G. Simpson 4951 [IRVC]

Echium candicans L. fil. - Pride of Madeira

NATURALIZED (native to Madeira, Macaronesia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1113 [IRVC]

Pectocarya linearis (Ruiz & Pavon) DC.

NATIVE Note: not determined to subspecies, but ferocula the only subtaxa in CA.; Sandra J. Leatherman 1099 [OBS]

Pectocarya linearis subsp. ferocula (I.M. Johnst.) Thorne - Slender Combseed

NATIVE, Note: Not determined to subspecies, but ssp. ferocula the only subtaxa in CA.., iNat Observations; CalFlora Observations; Michael G. Simpson 4928 [SDSU], Michael G. Simpson 4928 [IRVC], Ron Vanderhoff 1300 [IRVC]

Pectocarya penicillata (Hook. & Arn.) A. DC. - Tufted Combseed

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1338 [IRVC]

Plagiobothrys canescens Benth. - Valley Popcornflower

Plagiobothrys canescens var. canescens - Valley Popcornflower

NATIVE, iNat Observations

Plagiobothrys collinus (Phil.) I. M. Johnst. - Hill Popcornflower

NATIVE, iNat Observations

Plagiobothrys collinus var. californicus (A. Gray) Higgins - California Popcornflower

NATIVE, CalFlora Observations; Michael G. Simpson 4945 [IRVC], Ron Vanderhoff 1185 [IRVC]

Plagiobothrys collinus var. fulvescens (I. M. Johnst.) Higgins - Rough Popcornflower

NATIVE, CalFlora Observations; Fred M. Roberts 9406 [IRVC], Ron Vanderhoff 1208 [IRVC]

Plagiobothrys nothofulvus (A. Gray) A. Gray - Rusty Popcornflower

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1200 [IRVC], Fred M. Roberts 3305 [IRVC]

BRASSICACEAE

Brassica nigra (L.) W.D.J. Koch - Black/Wild Mustard

NATURALIZED (native to Europe), Note: A recent name change to Rhamphospermum nigrum; see Al-Shehbaz - Harvard Papers in Botany, 2021:1-4. We continue to follow the Jepson treatment. iNat Observations; CalFlora Observations; Ron Vanderhoff 1230 [IRVC], Sandra J. Leatherman 1107 [OBS]

Brassica tournefortii Gouan - Sahara Mustard

NATURALIZED (native to Mediterranean, southwestern Asia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1183 [IRVC]

Capsella bursa-pastoris (L.) Medik. - Shepherd’s Purse

NATURALIZED (native to Eurasia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1181 [IRVC]

Cardamine oligosperma Nutt. - Idaho Bittercress

NATIVE, COLLECTED PENDING

Caulanthus heterophyllus (Nutt.) Payson - San Diego Jewelflower

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1193 [IRVC]

Descurainia pinnata (Walter) Britton - Tansy-Mustard

Descurainia pinnata subsp. brachycarpa (Richardson) Detling - Western Tansy-Mustard

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1216 [IRVC]

Diplotaxis muralis (L.) DC. - annual wallrocket

NATURALIZED (native to Europe), iNat Observations

Hirschfeldia incana (L.) Lagr.-Foss. - Short-Pod Mustard

NATURALIZED (native to Mediterranean), iNat Observations; CalFlora Observations; Ron Vanderhoff 1214 [IRVC]

Iberis linifolia L.

WAIF (native to France to Slovenia and NE Spain), iNat Observations; CalFlora Observations

Lepidium sp. - stroganowia

Note: not determined to species., iNat Observations, COLLECTED PENDING

Lepidium didymum L. - Lesser Wart-Cress

NATURALIZED (native to South America), iNat Observations; Ron Vanderhoff 1239 [IRVC]

Lepidium lasiocarpum Nutt. - Sand Peppergrass

Lepidium lasiocarpum subsp. lasiocarpum - Sand Peppergrass

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1336 [IRVC]

Lepidium nitidum Nutt. - Shining Peppergrass

NATIVE, iNat Observations COLLECTED - PENDING

Lepidium oblongum Small - Wayside Peppergrass

NATIVE, iNat Observations; Fred M. Roberts 9411 [IRVC]

Lepidium virginicum L. - Virginia Peppercress

Lepidium virginicum var. robinsonii (Thell.) C.L. Hitchc. - Robinson’s Virginia Peppergrass

NATIVE; Fred M. Roberts 9385 [IRVC]

Lobularia maritima (L.) Desv. - Sweet Alyssum

NATURALIZED (native to Mediterranean), iNat Observations; CalFlora Observations; Ron Vanderhoff 1124 [IRVC]

Nasturtium officinale W.T. Aiton - Water Cress

NATIVE, iNat Observations; Rebecca Crowe 710 [OBS]

Sisymbrium irio L. - London Rocket Mustard

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1220 [IRVC]

Sisymbrium officinale (L.) Scop. - Hedge Mustard

NATURALIZED (native to Eurasia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1363 [IRVC], Fred M. Roberts 9392 [IRVC]

Sisymbrium orientale L. - Oriental Hedge Mustard

NATURALIZED (native to Eurasia), iNat Observations; CalFlora Observations

Thysanocarpus laciniatus Nutt. - Notch Fringepod

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1292 [IRVC], Ron Vanderhoff 1182 [IRVC], Fred M. Roberts 9389 [IRVC], Sandra J. Leatherman 1103 [OBS]

CACTACEAE

Cylindropuntia bernardina (Engelmann ex Parish ) M.A.Baker, Cloud-H. & Rebman - Cane/Valley Cholla

Native to the region but probably NATURALIZED here from a planting, Note: A recent name change from Cylindropuntia californica var. parkeri; see Baker, M. A. and D. J. Pinkava. 2018. Chromosome numbers in some cacti of western North America — IX. Haseltonia 2018:5-29. iNat Observations; CalFlora Observations

Cylindropuntia prolifera (Engelm.) F.M. Knuth - Coast Cholla

NATIVE, iNat Observations

Opuntia sp. - Prickly-Pear

Note: Not determined to species. Hybrids possible, iNat Observations

Opuntia engelmannii Salm-Dyck ex Engelm.

NATIVE, CalFlora Observations

Opuntia ficus-indica (L.) Mill.

NATURALIZED (native range unknown, possibly Mexico), iNat Observations; CalFlora Observations

Opuntia littoralis (Engelm.) Cockerell - Coast Prickly-Pear

NATIVE, iNat Observations; CalFlora Observations

Opuntia oricola Philbrick - Chaparral Prickly-Pear

NATIVE, iNat Observations; CalFlora Observations

Opuntia × vaseyi - Mesa Prickly-Pear

NATIVE, iNat Observations; CalFlora Observations

CAMPANULACEAE

Triodanis biflora (Ruiz & Pav.) Greene - Small Venus Looking-Glass

NATIVE, iNat Observations

CAPRIFOLIACEAE

Lonicera japonica Thunb.

NATURALIZED (native to Asia), iNat Observations; CalFlora Observations

Lonicera subspicata Hook. & Arn. - Wild Honeysuckle

Lonicera subspicata var. denudata Rehd. - Southern Honeysuckle

NATIVE, iNat Observations (some not to var. but presumed this taxon); CalFlora Observations; Ron Vanderhoff 1284 [IRVC]

Symphoricarpos mollis Nutt. ex Torr. & Gray - Creeping Snowberry

NATIVE, iNat Observations

CARYOPHYLLACEAE

Cardionema ramosissimum (Weinm.) A. Nelson & J.F. Macbr. - Sandmat, Tread Lightly

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1314 [IRVC]

Cerastium glomeratum Thuill. - Mouse-Ear Chickweed

NATURALIZED (native to Europe), iNat Observations; Michael G. Simpson 4942 [IRVC]

Polycarpon tetraphyllum (L.) L. - Four-Leaf Allseed

Polycarpon tetraphyllum var. tetraphyllum - Four-Leaf Allseed

NATURALIZED (native to Southern Europe), Note: not identified to variety, but this the only subtaxa in CA., iNat Observations; CalFlora Observations; Ron Vanderhoff 1454 [IRVC], Emile Fiesler 13 [IRVC]

Silene gallica L. - Windmill Pink

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1332 [IRVC], Ron Vanderhoff 1445 [IRVC]

Silene laciniata Cav. - Southern Pink

Silene laciniata subsp. laciniata - Southern Pink

NATIVE, iNat Observations (some not to subsp. but presumed this taxon); CalFlora Observations (some not to subsp. but presumed this taxon); CalFlora Observations; Ron Vanderhoff 1446 [IRVC]

Spergularia rubra (L.) J. Presl & C. Presl - Ruby Sand-Spurrey

NATURALIZED (native to Mediterranean, Asia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1316 [IRVC], Fred M. Roberts 9391 [IRVC], Ron Vanderhoff 1315 [IRVC], Ron Vanderhoff 1393 [IRVC]

Spergularia villosa (Pers.) Cambess. - Villous Sand-Spurrey

NATURALIZED (native to Southern South America); Fred M. Roberts 9387 [IRVC]

Stellaria media (L.) Vill. - Common Chickweed

NATURALIZED (native to southwestern Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1195 [IRVC], Sandra J. Leatherman 1104 [OBS]

CISTACEAE

Cistus incanus L. - Purple Rock-Rose

NATURALIZED (native to southern Europe) Note: some reference list as Cistus creticus., iNat Observations; CalFlora Observations; Ron Vanderhoff 1318 [IRVC]

Crocanthemum scoparium Millsp. - Peak Rush-Rose

NATURALIZED, iNat Observations; CalFlora Observations; Ron Vanderhoff 1325 [IRVC]

CONVOLVULACEAE

Calystegia macrostegia (Greene) Brummitt - California Morning-Glory

NATIVE, Note: The subspecies of Calystegia macrostegia are not recognized in a recent thesis, Namoff, S. M. 2017. Hybridization processes, biogeographic patterns and taxonomic rearrangements within Calystegia (Convolvulaceae). PhD. Claremont Graduate University, Claremont, California, USA, which we follow here. iNat Observations; CalFlora Observations; Ron Vanderhoff 1232 [IRVC]

Cuscuta californica Hook. & Arn. - California/Chaparral Dodder

NATIVE, iNat Observations; CalFlora Observations

Cuscuta subinclusa Durand & Hilg. - Canyon Dodder

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1449 [IRVC]

CRASSULACEAE

Crassula connata (Ruiz & Pav.) A. Berger - Pygmyweed

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1320 [IRVC]

Dudleya lanceolata (Nutt.) Britton & Rose - Lance-Leaf Dudleya

NATIVE, iNat Observations; CalFlora Observations; Michael G. Simpson 5070 [IRVC]

Dudleya pulverulenta (Nutt.) Britton & Rose - Chalk Dudleya

NATIVE, iNat Observations; CalFlora Observations

CUCURBITACEAE

Cucurbita foetidissima Kunth - Stinking Gourd, Calabazilla

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1485 [IRVC]

Cucurbita pepo L. - Pumpkin

Cucurbita pepo var. pepo - field pumpkin

WAIF (probably native to Mexico, Texas); Ron Vanderhoff 1077 [IRVC]

Marah macrocarpa (Greene) Greene - Wild Cucumber, Man-root

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1235 [IRVC], Ron Vanderhoff 1443 [IRVC], Sandra J. Leatherman 1087 [OBS]

CYPERACEAE

Carex barbarae Dewey - Santa Barbara Sedge

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1385 [IRVC]

Carex globosa Boott - roundfruit sedge

NATIVE; Emile Fiesler 16 [IRVC]

Carex praegracilis W. Boott

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1349 [IRVC], Ron Vanderhoff 1360 [IRVC]

Cyperus eragrostis Lam. - Tall Flatsedge

NATIVE, iNat Observations

Cyperus involucratus Rottb. - Umbrella Sedge

NATURALIZED (native to eastern Africa, sometimes cultivated), CalFlora Observations; Fred M. Roberts 9334 [IRVC], Ron Vanderhoff 1079 [IRVC]

Cyperus odoratus L. - Fragrant Flatsedge

NATIVE, iNat Observations

Eleocharis macrostachya Britton - Pale Spike-Rush

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1462 [IRVC]

Schoenoplectus americanus (Pers.) Volkart ex Schinz & R. Keller - Olney’s Bulrush

NATIVE, iNat Observations; CalFlora Observations

DRYOPTERIDACEAE

Dryopteris arguta (Kaulf.) Watt - Coastal Woodfern

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1289 [IRVC]

ERICACEAE

Arctostaphylos glandulosa Eastw. - Eastwood's manzanita

Arctostaphylos glandulosa subsp. glandulosa - Zaca's manzanita

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1333 [IRVC]

EUPHORBIACEAE

Croton californicus Müll. Arg. - California Croton

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1093 [IRVC]

Croton setiger Hook. - Doveweed, Turkey Mullein

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1137 [IRVC]

Euphorbia lathyris L. - caper spurge

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1480 [IRVC]

Euphorbia maculata L. - Spotted Spurge

NATURALIZED (native to Eastern North America), iNat Observations

Euphorbia peplus L. - Petty Spurge

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1223 [IRVC], Sandra J. Leatherman 1094 [OBS]

Euphorbia polycarpa Benth. - Small-Seed Sandmat

NATURALIZED (native to Nevada, Mexico), Note: Varieties of this species not accepted in the Jepson eFlora treatment. iNat Observations; CalFlora Observations; Ron Vanderhoff 1258 [IRVC]

Ricinus communis L. - Castor Bean

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1468 [IRVC]

FABACEAE

Acacia cyclops A. Cunn. ex G. Don - Western Coastal Wattle

NATURALIZED (native to southwestern Australia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1270 [IRVC]

Acacia redolens Maslin - Vanilla Scented Wattle

NATURALIZED (native to southwestern Australia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1198 [IRVC]

Acmispon americanus (Nutt.) Rydb. - American Lotus, Spanish-Clover

Acmispon americanus var. americanus - American Lotus, Spanish-Clover

NATIVE, iNat Observations; CalFlora Observations; Note: Photo observations not to variety, but assumed to be this taxon.; Michael G. Simpson 5067 [IRVC]

Acmispon glaber (Vogel) Brouillet - Deerweed

NATIVE Note: Not determined to subtaxa, iNat Observations; Sandra J. Leatherman 1089 [OBS]

Acmispon glaber var. brevialatus (Ottley) Brouillet - Short-Wing Deerweed

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1486 [IRVC]

Acmispon glaber var. glaber - Coastal Deerweed

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1419 [IRVC]

Acmispon maritimus (Nutt.) D.D. Sokoloff - Alkali Lotus

Acmispon maritimus var. maritimus - Alkali Lotus

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1294 [IRVC]

Acmispon micranthus (Nutt.) Brouillet - Grab Lotus

NATIVE, iNat Observations; CalFlora Observations; Fred M. Roberts 3311 [IRVC], Michael G. Simpson 4929 [IRVC]

Acmispon strigosus (Nutt.) Brouillet - Strigose Lotus

NATIVE, Note: Recently treated as Ottleya strigosa (Nutt.) D.D.Sokoloff in Plants of the World Online and iNaturalist. iNat Observations; CalFlora Observations; Ron Vanderhoff 1199 [IRVC], Michael G. Simpson 4932 [IRVC]

Albizia lophantha (Willd.) Benth. - Plume Acacia

NATURALIZED (native to southeastern Asia, southwestern Australia) Note: treated by some references as Paraserianthes lophantha., iNat Observations; CalFlora Observations; Ron Vanderhoff 1236 [IRVC]

Astragalus didymocarpus Hook. & Arn. - White Dwarf Locoweed

Astragalus didymocarpus var. didymocarpus - Typical White Dwarf Locoweed

NATIVE, iNat Observations; Ron Vanderhoff 1366 [IRVC], Michael G. Simpson 4933 [IRVC]

Astragalus gambelianus E. Sheld. - Gambel’s Locoweed

NATIVE, iNat Observations; Michael G. Simpson 4935 [SDSU], Michael G. Simpson 4935 [IRVC]

Astragalus trichopodus (Nutt.) A. Gray - Ocean Locoweed

Astragalus trichopodus var. lonchus (M.E. Jones) Barneby - ocean milkvetch

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1126 [IRVC]

Cercis occidentalis Torr. ex A. Gray - California redbud

Native to CA, but PERSISTING FROM CULTIVATION at site, iNat Observations; CalFlora Observations; Ron Vanderhoff 1414 [IRVC]

Lathyrus odoratus L. - Sweet Pea

NATIVE; Rebecca Crowe 711 [OBS]

Lathyrus vestitus Nutt. - Sweet Pea

Lathyrus vestitus var. alefeldii (T.G. White) Isely - San Diego Sweet Pea

NATIVE, iNat Observations (not identified to variety; need verification); Fred M. Roberts 3303 [IRVC]

Lathyrus vestitus var. vestitus - Canyon Sweet Pea

NATIVE, iNat Observations (not all identified to variety; need verification); CalFlora Observations; Ron Vanderhoff 1233 [IRVC]

Lotus corniculatus L. - Birdfoot Trefoil

NATURALIZED (native to Eurasia), iNat Observations

Lupinus bicolor Lindl. - Miniature Lupine

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1204 [IRVC]

Lupinus hirsutissimus Benth. - Stinging Lupine

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1194 [IRVC]

Lupinus microcarpus Sims

Lupinus microcarpus subsp. microcarpus - Red-Flower Lupine

NATIVE, iNat Observations (not all identified to variety; need verification); CalFlora Observations; Ron Vanderhoff 1410 [IRVC]

Lupinus microcarpus var. densiflorus (Benth.) Jeps. - Chick Lupine

Lupinus sparsiflorus Benth. - Coulter’s Lupine

NATIVE, iNat Observations; CalFlora Observations; Michael G. Simpson 4949 [IRVC], Ron Vanderhoff 1243 [IRVC]

Lupinus succulentus Douglas ex K. Koch - Arroyo Lupine

NATIVE, iNat Observations; CalFlora Observations; Sandra J. Leatherman 1106 [OBS]

Lupinus truncatus Nutt. ex Hook. & Arn. - Collar Lupine

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1265 [IRVC]

Medicago polymorpha L. - Burclover

NATURALIZED (native to Mediterranean, Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1324 [IRVC]

Melilotus albus Medik. - White Sweetclover

NATURALIZED (native to Eurasia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1136 [IRVC], Ron Vanderhoff 1133 [IRVC]

Melilotus indicus (L.) All. - Sourclover

NATURALIZED (native to Mediterranean), iNat Observations; CalFlora Observations; Ron Vanderhoff 1254 [IRVC]

Phaseolus vulgaris L. - Kidney Bean

WAIF (native to Central and South America) Note: small patch at trailside.; Ron Vanderhoff 876 [IRVC]

Spartium junceum L. - Spanish Broom

NATURALIZED (native to Mediterranean), iNat Observations; CalFlora Observations; Ron Vanderhoff 1329 [IRVC]

Trifolium hirtum All. - Rose Clover

NATURALIZED (native to Eurasia, Northern Africa), iNat Observations; CalFlora Observations; Michael G. Simpson 4926 [IRVC]

Trifolium repens L. - White Clover

NATURALIZED (native to Eurasia), iNat Observations

Trifolium willdenovii Spreng. - Valley Clover

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1391 [IRVC], Emile Fiesler 17 [IRVC]

Vicia ludoviciana Nutt. ex Torr. & A. Gray - Deer Pea Vetch

Vicia ludoviciana subsp. ludoviciana - Deer Pea Vetch

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1389 [IRVC]

Vicia sativa L. - Narrow-Leaf Vetch

Vicia sativa subsp. nigra (L.) Ehrh. - narrow-leaved vetch

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1370 [IRVC]

Vicia sativa subsp. sativa - tare

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1417 [IRVC]

FAGACEAE

Quercus agrifolia Née - Coast Live Oak

NATIVE Note: Not determined to variety, iNat Observations; Ron Vanderhoff 1225 [IRVC]

Quercus agrifolia var. agrifolia - Coast Live Oak

NATIVE, iNat Observations; CalFlora Observations; Fred M. Roberts 9339 [IRVC]

Quercus berberidifolia Liebm. - Scrub Oak

NATIVE, iNat Observations; CalFlora Observations; Fred M. Roberts 9342 [IRVC], Fred M. Roberts 9409 [IRVC], Ron Vanderhoff 1139 [IRVC]

Quercus ilex L. - holly oak

NATURALIZED (native to Mediterranean), iNat Observations; CalFlora Observations; Ron Vanderhoff 1415 [IRVC]

GERANIACEAE

Erodium botrys (Cav.) Bertol. - Long-Beak Filaree/Storksbill

NATURALIZED (native to Southern Europe), iNat Observations; Ron Vanderhoff 1244 [IRVC]

Erodium cicutarium (L.) L'Hér. ex Aiton - Red-Stem Filaree/Storksbill

NATURALIZED (native to Eurasia), iNat Observations; CalFlora Observations; Sandra J. Leatherman 1092 [OBS]

Erodium moschatum (L.) L'Hér. ex Aiton - White-Stem Filaree/Storksbill

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1197 [IRVC]

Geranium carolinianum L. - Carolina geranium

NATIVE, iNat Observations; CalFlora Observations

Geranium dissectum L. - Cut-Leaf Geranium

NATURALIZED (native to Europe, Northern Africa, Western Asia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1352 [IRVC], Ron Vanderhoff 319 [IRVC], Ron Vanderhoff 1319 [IRVC]

GROSSULARIACEAE

Ribes aureum Pursh - Golden Currant

Native to California, but likely NATURALIZED in the park. Appearing to establish from a planting adjacent to trails, iNat Observations; CalFlora Observations; Ron Vanderhoff 929 [IRVC]

Ribes californicum Hook. & Arn. - California Gooseberry

NATIVE, iNat Observations

Ribes indecorum Eastw. - White-Flower Currant

NATIVE, iNat Observations; CalFlora Observations; Fred M. Roberts 9386 [IRVC], Ron Vanderhoff 933 [IRVC], Sandra J. Leatherman 1091 [OBS]

Ribes malvaceum Sm. - Chaparral Currant

NATIVE, Note: not identified to variety, two of which are in OC. iNat Observations COLLECTED - PENDING

Ribes speciosum Pursh - Fuchsia-Flower Gooseberry

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1255 [IRVC], Michael G. Simpson 4840 [IRVC]

HELIOTROPIACEAE

Heliotropium curassavicum L.

Heliotropium curassavicum var. oculatum (Heller) I. M. Johnst. ex Tidestr. - Salt Heliotrope

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1141 [IRVC]

HYDROPHYLLACEAE

Emmenanthe penduliflora Benth. - Whispering Bells

NATIVE, iNat Observations; CalFlora Observations; Rebecca Crowe 715 [OBS]

Eucrypta chrysanthemifolia (Benth.) Greene - Common Eucrypta

NATIVE Note: not determined to variety., iNat Observations; CalFlora Observations; Sandra J. Leatherman 1108 [OBS]

Eucrypta chrysanthemifolia var. chrysanthemifolia - Common Eucrypta

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1207 [IRVC]

Nemophila menziesii Hook. & Arnott - Baby Blue Eyes

Nemophila menziesii var. menziesii - Menzies’s Baby Blue Eyes

NATIVE, iNat Observations (not all identified to variety); CalFlora Observations; CalFlora Observations; Ron Vanderhoff 1257 [IRVC]

Phacelia cicutaria Greene

Phacelia cicutaria var. hispida (A. Gray) J.T. Howell - Caterpillar Phacelia

NATIVE, iNat Observations (not all determined to variety, but presumed this taxon based on distribution data); CalFlora Observations; Ron Vanderhoff 1369 [IRVC]

Phacelia ciliata Benth.

NATIVE, iNat Observations; CalFlora Observations; Sandra J. Leatherman 1109 [OBS]

Phacelia distans Benth. - Distant Phacelia

NATIVE, iNat Observations; CalFlora Observations; Michael G. Simpson 4937 [IRVC], Michael G. Simpson 4975 [IRVC], Ron Vanderhoff 1266 [IRVC]

Phacelia grandiflora (Benth.) A. Gray - Giant-Flower Phacelia

NATIVE; Robt. Allen s.n. [RSA]

Phacelia hubbyi (J.F.Macbr.) Garrison

NATIVE, Environmental Listing: 4.2 S4 G4; iNat Observations; CalFlora Observations; Ron Vanderhoff 1296 [IRVC]

Phacelia parryi Torr. - Parry’s Phacelia

NATIVE, iNat Observations; CalFlora Observations; Ed Kentner 126 [UCR], Fred M. Roberts Jr. 3312 [IRVC], Sandra J. Leatherman 1113 [OBS]

Pholistoma auritum (Lindl.) Lilja - Fiesta Flower

NATIVE, iNat Observations; Sandra J. Leatherman 1086 [OBS]

IRIDACEAE

Sisyrinchium bellum S.Watson - Blue-Eyed-Grass

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1259 [IRVC]

JUGLANDACEAE

Juglans californica S. Watson - California black walnut

Native to California and part of Orange County, but likely NATURALIZED from plantings in the Park, Environmental Listing: 4.2 S4 G4, iNat Observations; CalFlora Observations; M. Roddy 7 [LOB], Ron Vanderhoff 1138 [IRVC]

JUNCACEAE

Juncus balticus Willd. - Baltic rush

Juncus balticus subsp. ater (Rydb.) Snogerup - mountain rush

NATIVE, iNat Observations; CalFlora Observations; Emile Fiesler 15 [IRVC], Ron Vanderhoff 1397 [IRVC]

Juncus bufonius L. - Toad Rush

NATIVE, iNat Observations; Ron Vanderhoff 1386 [IRVC]

Juncus bufonius var. bufonius - toad rush

NATIVE; Emile Fiesler 14 [IRVC]

Juncus mexicanus Willd. ex Schult. & Schult. f. - Mexican rush

NATIVE, CalFlora Observations; Ron Vanderhoff 1384 [IRVC]

Juncus patens E. Mey. - spreading rush

NATIVE; Fred M. Roberts 9335 [IRVC]

Juncus rugulosis Engelm. - Wrinkled Rush

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1461 [IRVC]

Juncus xiphioides E. Mey. - Iris-Leaf Rush

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1479 [IRVC]

LAMIACEAE

Lamium amplexicaule L. - Henbit

NATURALIZED (native to Eurasia), iNat Observations

Marrubium vulgare L. - Horehound

NATURALIZED (native to Europe, n. Africa, and s.w. and c. Asia), iNat Observations; CalFlora Observations; Michael G. Simpson 4941 [IRVC], Ron Vanderhoff 1355 [IRVC]

Salvia apiana Jeps. - White Sage

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1427 [IRVC]

Salvia columbariae Benth. - Chia

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1312 [IRVC]

Salvia mellifera Greene - Black Sage

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1203 [IRVC]

Salvia sonomensis Greene - creeping sage

Native to CA, but PERSISTING FROM CULTIVATION at site; Michael G. Simpson 4936 [IRVC]

Scutellaria tuberosa Benth. - Danny's skullcap

NATIVE, iNat Observations

Stachys rigida Nutt. ex Benth. - Rigid Hedge-Nettle

Stachys rigida subsp. quercetorum (A. Heller) Epling - Oak Hedge-Nettle

NATIVE, iNat Observations (not all to subspecies); Michael G. Simpson 4938 [IRVC]

Trichostema lanceolatum Benth. - Vinegar Weed

NATIVE, iNat Observations

LAURACEAE

Cinnamomum camphora (L.) J. Presl - camphor laurel

NATURALIZED (native to Eastern Asia), CalFlora Observations; Ron Vanderhoff 1237 [IRVC]

Umbellularia californica (Hook. & Arn.) Nutt. - California Bay

Native to CA, but PERSISTING FROM CULTIVATION at site, iNat Observations

LILIACEAE

Calochortus catalinae S.Watson - Catalina Mariposa Lily

NATIVE, Environmental Listing: 1B.3 S2? G4T2?; iNat Observations; CalFlora Observations; Ron Vanderhoff 1351 [IRVC]

Calochortus splendens Douglas ex Benth. - Splendid Mariposa Lily

NATIVE, iNat Observations; Michael G. Simpson 4934 [IRVC]

MALVACEAE

Malacothamnus fasciculatus (Nutt. ex Torr. & A. Gray) Greene - Chaparral Bushmallow

Malacothamnus fasciculatus var. fasciculatus - Mendocino bushmallow

NATIVE, iNat Observations (not all determined to variety, but presumed to be this taxon); CalFlora Observations; Ron Vanderhoff 1463 [IRVC], Ron Vanderhoff 1168 [IRVC]

Malva parviflora L. - Cheeseweed

NATURALIZED (native to Europe, Mediterranean, India), iNat Observations; CalFlora Observations; Ron Vanderhoff 1221 [IRVC], Fred M. Roberts 9407 [IRVC]

MONTIACEAE

Calandrinia menziesii (Hook.) Torrey & A. Gray - Red Maids

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1281 [IRVC], Ron Vanderhoff 1184 [IRVC]

Calyptridium monandrum Nutt. - Common Calyptridium

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1331 [IRVC], Michael G. Simpson 4955 [IRVC]

Claytonia parviflora Douglas ex Hook.

Claytonia parviflora subsp. parviflora - Narrow-Leaf Miner's-Lettuce

NATIVE, iNat Observations (not all determined to subspecies); CalFlora Observations; Ron Vanderhoff 1362 [IRVC], Fred M. Roberts 9393 [IRVC]

Claytonia perfoliata Donn ex Willd. - Miner’s-Lettuce

NATIVE Note: Not determined to subspecies., iNat Observations; CalFlora Observations; Sandra J. Leatherman 1097 [OBS]

Claytonia perfoliata subsp. perfoliata - miner's lettuce

NATIVE, ; CalFlora Observations; Ron Vanderhoff 1187 [IRVC]

MORACEAE

Ficus carica L. - Edible Fig

NATURALIZED (native to Southwestern Asia, iNat Observations; CalFlora Observations; Fred M. Roberts 9336 [IRVC]

Ficus rubiginosa Desf. ex Vent. - Port Jackson fig

PERSISTING FROM CULTIVATION (native to Eastern Australia), iNat Observations

MYRTACEAE

Corymbia citriodora (Hook.) K.D. Hill & L.A.S. Johnson - Lemon-Scented Gum

PERSISTING FROM CULTIVATION (native to northeastern Australia), CalFlora Observations

Eucalyptus camaldulensis Dehnh. - red gum

NATURALIZED (native to Australia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1099 [IRVC]

Eucalyptus globulus Labill. - Blue Gum

PERSISTING FROM CULTIVATION (native to southeastern Australia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1153 [IRVC]

Eucalyptus sideroxylon A. Cunn. ex Woolls - Red Iron Bark

PERSISTING FROM CULTIVATION (native to southeastern Australia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1152 [IRVC]

Melaleuca nesophila F. Muell.

PERSISTING FROM CULTIVATION (native to western Australia), CalFlora Observations

NYCTAGINACEAE

Mirabilis laevis (Benth.) Curran - Wishbone Plant

Mirabilis laevis var. crassifolia (Choisy) Spellenb. - Coastal Wishbone Plant

NATIVE, iNat Observations (not all determined to variety, but presumed this taxon based on distribution data); CalFlora Observations; Ron Vanderhoff 931 [IRVC]

OLEACEAE

Fraxinus dipetala Hook. & Arn. - two-petal ash

NATIVE, iNat Observations

Fraxinus uhdei (Wenz.) Lingelsh. - Shamel Ash

NATURALIZED (native to Eurasia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1476 [IRVC]

Olea europaea L. - Olive

NATURALIZED (native to western Asia), iNat Observations; CalFlora Observations

ONAGRACEAE

Camissoniopsis sp.

NATIVE Note: not identified to species., iNat Observations

Camissoniopsis bistorta (Nutt. ex Torr. & A. Gray) W.L. Wagner & Hoch - California Sun Cup

NATIVE; Michael G. Simpson 4957 [IRVC]

Camissoniopsis hirtella (Greene) W.L. Wagner & Hoch - Field Sun Cup

NATIVE, iNat Observations; Emile Fiesler 11 [IRVC]

Camissoniopsis intermedia (P.H. Raven) W.L. Wagner & Hoch - intermediate suncup

NATIVE, iNat Observations; Fred M. Roberts 9384 [IRVC]

Camissoniopsis lewisii (P.H. Raven) W.L. Wagner & Hoch - Lewis' evening primrose

Michael G. Simpson 4948 [SDSU], Michael G. Simpson 4948 [IRVC]

Camissoniopsis micrantha (Hornem. ex Spreng.) W.L. Wagner & Hoch - Miniature Sun Cup

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1190 [IRVC], Ron Vanderhoff 1242 [IRVC]

Clarkia bottae (Spach) F.H. Lewis & M.E. Lewis - Botta's Clarkia, Punchbowl Godetia

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1450 [IRVC]

Clarkia epilobioides (Nutt. ex Torr. & A. Gray) A. Nelson & J.F. Macbr. - White Clarkia, Canyon Fairyfan

NATIVE, iNat Observations

Clarkia purpurea (W. Curtis) A. Nelson & J.F. Macbr. - Winecup Fairyfan

Clarkia purpurea subsp. purpurea - winecup clarkia

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1484 [IRVC]

Clarkia purpurea subsp. quadrivulnera (Douglas) F.H. Lewis & M.E. Lewis - Four-Spot Clarkia

NATIVE, iNat Observations (not all determined to subspecies, but presumed this taxon); CalFlora Observations; Ron Vanderhoff 1383 [IRVC]

Epilobium canum (Greene) P.H. Raven - California Fuchsia, Hummingbird Trumpet

Epilobium canum subsp. canum - California Fuchsia, Hummingbird Trumpet

NATIVE, iNat Observations (not all determined to subsp., but presumed this taxon); CalFlora Observations; Ron Vanderhoff 1121 [IRVC]

Eulobus californicus Nutt. ex Torr. & A. Gray - False-Mustard

NATIVE, iNat Observations; CalFlora Observations; Fred M. Roberts Jr. 3315 [IRVC]

Oenothera elata Kunth - Tall Evening-Primrose

Oenothera elata subsp. hookeri (Torr. & A. Gray) W. Dietr. & W.L. Wagner - Hooker’s Tall Evening-Primrose

NATIVE, iNat Observations

Oenothera speciosa Nutt.

NATURALIZED (native New Mexico to central United States, central Mexico), iNat Observations

OROBANCHACEAE

Aphyllon californicum (Cham. & Schltdl.) A. Gray - California broomrape

NATIVE, iNat Observations

Aphyllon parishii - Parish's broomrape

Aphyllon parishii subsp. parishii - Parish's broomrape

NATIVE, CalFlora Observations

Castilleja affinis Hook. & Arn. - Coast Paintbrush

NATIVE Note: Not determined to subspecies, but likely C. a. subsp. affinis., iNat Observations; Fred M. Roberts 3297 [RSA], Sandra J. Leatherman 1088 [OBS]

Castilleja affinis subsp. affinis - Coast Paintbrush

NATIVE, iNat Observations; CalFlora Observations; Kristin Steckley 9649 [LOB]

Castilleja exserta (A. Heller) T.I. Chuang & Heckard - Purple Owl’s-Clover

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1433 [IRVC]

Castilleja exserta subsp. exserta - red owlclover

NATIVE, iNat Observations; CalFlora Observations

Castilleja foliolosa Hook. & Arn. - Woolly Paintbrush

NATIVE

Castilleja subinclusa Greene - longleaf Indian paintbrush

NATIVE Note: Appears to be this species, from expert determination by Mark Egger., iNat Observations; Michael G. Simpson 4958 [SDSU], Michael G. Simpson 4958 [IRVC]

Cordylanthus rigidus (Benth.) Jeps. - Stiffbranch Bird’s Beak

NATIVE, iNat Observations

OXALIDACEAE

Oxalis californica (Abrams) R. Knuth - California Wood-Sorrel

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 932 [IRVC]

Oxalis corniculata L. - yellow wood sorrel

NATURALIZED (native to mediterranean Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1411 [IRVC]

Oxalis pes-caprae L. - African Wood-Sorrel

NATURALIZED (native to Southern Africa), iNat Observations; CalFlora Observations; Ron Vanderhoff 1210 [IRVC], Sandra J. Leatherman 1095 [OBS]

PAEONIACEAE

Paeonia californica Nutt. - California Peony

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1189 [IRVC]

PAPAVERACEAE

Eschscholzia californica Cham. - California Poppy

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1201 [IRVC]

Papaver rhoeas L. - corn poppy

WAIF (native to Eurasia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1477 [IRVC]

Romneya coulteri Harv. - Coulter's Matilija Poppy

NATIVE, Environmental Listing: 4.2 S4 G4; CalFlora Observations; Fred M. Roberts 4683 [RSA]

PHRYMACEAE

Diplacus australis McMinn - Southern Monkey Flower

NATIVE, iNat Observations; Emile Fiesler 19 [IRVC], Ron Vanderhoff 1252 [IRVC], Emile Fiesler 10 [IRVC]

Diplacus brevipes (Benth.) G.L.Nesom - Slope Semiphore, Widethroat Yellow Monkeyflower

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1425 [IRVC]

Diplacus longiflorus Nutt. - Santa Susana bush monkeyflower

NATIVE, iNat Observations

Diplacus puniceus Nutt. - Coast Monkey Flower

NATIVE, iNat Observations

Erythranthe floribunda (Lindl.) G.L.Nesom - Showy Monkey Flower

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1388 [IRVC], Ron Vanderhoff 1455 [IRVC]

Erythranthe guttata (DC.) G.L.Nesom - Seep Monkey Flower

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1390 [IRVC]

Mimetanthe pilosa (Benth.) Greene - Downy Monkey Flower

NATIVE, iNat Observations

PINACEAE

Pinus sp. - pine

NATURALIZED (native location uncertain) Note: not determined to species, iNat Observations

PITTOSPORACEAE

Pittosporum tobira (Murray) Aiton fil.

WAIF (native to eastern Asia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1130 [IRVC]

Pittosporum undulatum

NATURALIZED (native to southeastern Australia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1306 [IRVC]

PLANTAGINACEAE

Antirrhinum coulterianum Benth. ex A. DC. - Coulter's snapdragon

NATIVE. Recently treated as a species of the genus Sairocarpus, iNat Observations; CalFlora Observations

Antirrhinum kelloggii Greene - Kellogg's snapdragon

NATIVE Recently treated as Neogaerrhinum strictum, iNat Observations; CalFlora Observations; Ron Vanderhoff 1459 [IRVC]

Antirrhinum nuttallianum Benth. ex A. DC. - Nuttall’s Snapdragon

NATIVE Note: Not determined to subspecies. Recently treated as a species of the genus Sairocarpus., iNat Observations; Ron Vanderhoff 1436 [IRVC]

Callitriche heterophylla Pursh - differentleaf waterstarwort

NATIVE, CalFlora Observations

Collinsia heterophylla Buist ex R. Grah. - Chinese Houses

Collinsia heterophylla var. heterophylla - purple Chinese houses

NATIVE, iNat Observations (Note: Not all identified to variety, but presumed this taxon); CalFlora Observations; Ron Vanderhoff 1442 [IRVC]

Keckiella antirrhinoides (Benth.) Straw - Yellow Bush Penstemon

Keckiella antirrhinoides subsp. antirrhinoides - Yellow Bush Penstemon

NATIVE, iNat Observations (Note: Not all determined to subsp., but presumed this taxon); CalFlora Observations; Ron Vanderhoff 1437 [IRVC]

Keckiella cordifolia (Benth.) Straw - Climbing/Heart-Leaf Bush Penstemon

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1464 [IRVC]

Kickxia elatine (L.) Dumort. - Fluellin

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1229 [IRVC]

Nuttallanthus texanus (Scheele) D.A. Sutton - Large Blue Toadflax

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1335 [IRVC]

Penstemon centranthifolius (Benth.) Benth. - scarlet bugler

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1387 [IRVC]

Plantago erecta E. Morris - Dot-Seed Plantain

NATIVE, iNat Observations; Fred M. Roberts 3309 [IRVC]

Plantago major L. - rippleseed plantain

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1116 [IRVC], Fred M. Roberts 9331 [IRVC]

PLATANACEAE

Platanus racemosa Nutt. - Western Sycamore

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1328 [IRVC]

Platanus × hispanica

PERSISTING FROM CULTIVATION at site, iNat Observations

PLUMBAGINACEAE

Limonium duriusculum (Girard) Fourr.

NATURALIZED (native to Western Mediterranean), iNat Observations

Limonium perezii (Stapf) F.T. Hubb. - Perez’s Marsh-Rosemary

NATURALIZED (native to Canary Islands), iNat Observations

POACEAE

Aristida adscensionis L. - Six-Weeks Three-Awn

NATIVE, iNat Observations;; Fred M. Roberts 3321 [RSA]

Aristida purpurea Nutt.

Aristida purpurea var. parishii (Hitchc.) Allred

NATIVE, iNat Observations (Note: Not all determined to variety); Fred M. Roberts 3314 [RSA], Fred M. Roberts 9408 [IRVC]

Arundo donax L. - Giant Reed

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1487 [IRVC]

Avena barbata Pott ex Link - Slender Wild Oat

NATURALIZED (native to southern Europe, northern Africa to India), iNat Observations; CalFlora Observations; Ron Vanderhoff 1205 [IRVC]

Avena fatua L. - Insipid Wild Oat

NATURALIZED (native to Eurasia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1206 [IRVC]

Bothriochloa barbinodis (Lag.) Herter - Cane Bluestem

NATIVE, iNat Observations COLLECTED - PENDING

Brachypodium distachyon (L.) P. Beauv. - Purple False Brome

NATURALIZED (native to Southern Europe), iNat Observations

Bromus carinatus Hook. & Arn. - California Brome

NATIVE, Note: Jepson eflora now references this as Bromus sitchensis var. carinatus., iNat Observations

Bromus diandrus Roth - Ripgut Grass

NATURALIZED (native to Europe), iNat Observations; Ron Vanderhoff 1248 [IRVC], Sandra J. Leatherman 1100 [OBS]

Bromus hordeaceus L. - Soft Chess

NATURALIZED (native to Europe), iNat Observations; Michael G. Simpson 4943 [IRVC], Ron Vanderhoff 1367 [IRVC], A. Lewis 387 [UCJEPS]

Bromus madritensis L. - Madrid Brome

NATURALIZED (native to Europe), iNat Observations

Bromus rubens L. - Red Brome

NATURALIZED (native to Europe), iNat Observations; Sandra J. Leatherman 1101 [OBS], Rebecca E. Crowe 674 [OBS]

Cenchrus setaceus (Forssk.) Morrone - African Fountain Grass

NATURALIZED (native to Africa), iNat Observations; CalFlora Observations; Ron Vanderhoff 1249 [IRVC]

Cortaderia selloana (Schult. & Schult. f.) Asch. & Graebn. - Sellow's Pampas Grass

NATURALIZED (native to Eastern South America), iNat Observations; CalFlora Observations; Ron Vanderhoff 1122 [IRVC]

Crypsis schoenoides (L.) Lam. - Prickle Grass

NATURALIZED (native to Europe); Fred M. Roberts 3302 [RSA]

Cynodon dactylon (L.) Pers. - Bermuda Grass

NATURALIZED (native to Africa), iNat Observations; Ron Vanderhoff 1082 [IRVC], Ron Vanderhoff 1111 [IRVC]

Digitaria ischaemum (Schreb.) Muhl.

NATURALIZED (native to Europe), iNat Observations

Digitaria sanguinalis (L.) Scop.

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1144 [IRVC]

Distichlis spicata (L.) Greene - Salt Grass

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1453 [IRVC]

Echinochloa colona (L.) Link

NATURALIZED (native to to Old, New World tropics), iNat Observations; CalFlora Observations; Ron Vanderhoff 1125 [IRVC]

Ehrharta erecta Lam. - Panic Veldt Grass

NATURALIZED (native to Southern Africa), iNat Observations; Rebecca Crowe 713 [OBS]

Elymus condensatus J. Presl - Giant Wild-Rye

NATIVE, CalFlora Observations; iNat Observations; Ron Vanderhoff 1452 [IRVC], Michael G. Simpson 5069 [IRVC]

Festuca bromoides L.

NATURALIZED (native to Europe); Fred M. Roberts 9410 [IRVC]

Festuca myuros L. - Rat-Tail Fescue

NATURALIZED (probably native to Europe), iNat Observations; Ron Vanderhoff 1261 [IRVC]

Festuca octoflora Walter

NATURALIZED (native to Europe); Fred M. Roberts 3317 [IRVC]

Hordeum murinum L. - Wall Barley

NATURALIZED (native to Europe, Mediterranean) Note: not determined to subspecies., iNat Observations; CalFlora Observations; Ron Vanderhoff 1224 [IRVC]

Hordeum murinum subsp. leporinum (Link) Arcang. - Hare Barley

NATURALIZED (native to Mediterranean and Eurasia), iNat Observations; CalFlora Observations

Lamarckia aurea (L.) Moench - Golden-Top

NATURALIZED (native to Mediterranean), iNat Observations; CalFlora Observations; Ron Vanderhoff 1308 [IRVC]

Melica imperfecta Trin. - Coast Range Melic

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1286 [IRVC]

Muhlenbergia microsperma (DC.) Kunth - Little-Seed Muhly

NATIVE, iNat Observations; CalFlora Observations; Michael G. Simpson 4842 [IRVC], Fred M. Roberts 9343 [IRVC], Ron Vanderhoff 1317 [IRVC], Fred M. Roberts 3316 [IRVC], more...

Muhlenbergia rigens (Benth.) Hitchc. - Deergrass

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1109 [IRVC]

Pennisetum ciliare (L.) Link - buffelgrass

NATURALIZED (native to Africa, western Asia, India) Note: some references list as Cenchrus ciliare., iNat Observations; CalFlora Observations; Ron Vanderhoff 1165 [IRVC], Fred M. Roberts 9193 [IRVC]

Pennisetum clandestinum Hochst. ex Chiov.

NATURALIZED (native to Africa) Note: some references list as Cenchrus clandestinus., CalFlora Observations

Poa annua L.

NATURALIZED (probably native to Europe), CalFlora Observations; Ron Vanderhoff 1240 [IRVC]

Poa secunda J. Presl - One-Sided Blue Grass

Poa secunda subsp. secunda

NATIVE; Fred M. Roberts 9395 [IRVC]

Polypogon monspeliensis (L.) Desf. - Annual Beard Grass

NATURALIZED (native to southern and western Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1413 [IRVC], Ron Vanderhoff 311 [IRVC]

Schismus barbatus (L.) Thell. - Mediterranean Schismus

NATURALIZED (native to southern Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1192 [IRVC], Michael G. Simpson 4956 [IRVC]

Setaria sp.

NATURALIZED (native origin uncertain), Note: not identified to species, but does not appear to be the native S. parviflora., iNat Observations

Stipa coronata Thurb. - Giant Stipa

NATIVE Note: listed by some as Eriocoma coronata., iNat Observations; CalFlora Observations; Ron Vanderhoff 1334 [IRVC]

Stipa lepida Hitchc. - Foothill Needle Grass

NATIVE Note: listed by some references as Nassella lepida., iNat Observations; CalFlora Observations; Ron Vanderhoff 1309 [IRVC], Michael G. Simpson 4953 [IRVC], Ron Vanderhoff 1247 [IRVC]

Stipa miliacea (L.) Hoover - Smilo Grass

Stipa miliacea var. miliacea - Smilo Grass

NATURALIZED (native to Europe, northern Africa, western Asia), Note: Treated as Oloptum miliaceum (L.) Röser & Hamasha in some works, e.g., iNaturalist; iNat Observations; CalFlora Observations; Ron Vanderhoff 1084 [IRVC]

Stipa pulchra Hitchc. - Purple Needle Grass

NATIVE Note: listed by some references as Nassella pulchra., CalFlora Observations; Ron Vanderhoff 1246 [IRVC], Ron Vanderhoff 1299 [IRVC], Sandra J. Leatherman 1110 [OBS]

POLEMONIACEAE

Eriastrum sapphirinum (Eastw.) H. Mason - Sapphire Woolly-Star

Eriastrum sapphirinum subsp. sapphirinum - sapphire woollystar

NATIVE Note: Not all observations identified to subsp., but presumed this taxon., iNat Observations; CalFlora Observations; Ron Vanderhoff 1465 [IRVC]

Gilia angelensis V.E. Grant - Grassland Gilia

NATIVE, iNat Observations; CalFlora Observations; Michael G. Simpson 4944 [SDSU], Michael G. Simpson 4944 [IRVC], Ron Vanderhoff 1354 [IRVC], Ron Vanderhoff 1268 [IRVC]

Gilia capitata Sims - Ball/Bluehead Gilia

Gilia capitata subsp. abrotanifolia (Nutt. ex Greene) V.E. Grant - Ball/Bluehead Gilia

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1313 [IRVC]

Gilia clivorum (Jeps.) V.E. Grant - Purple-Spot Gilia

NATIVE, iNat Observations

Leptosiphon liniflorus (Benth.) J.M. Porter & L.A. Johnson - lighthouse flaxflower

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 851 [IRVC]

Leptosiphon parviflorus (Benth.) J.M. Porter & L.A. Johnson - variable linanthus

NATIVE, iNat Observations; Emile Fiesler 18 [IRVC]

Linanthus californicus (Hook. & Arn.) J.M. Porter & L.A. Johnson - California Prickly-Phlox

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 934A [IRVC]

Linanthus dianthiflorus (Benth.) Greene - Fringed Linanthus, Ground Pink

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1262 [IRVC]

POLYGONACEAE

Chorizanthe procumbens Nutt. - Prostrate Spineflower

NATIVE, iNat Observations; CalFlora Observations; Michael G. Simpson 4946 [SDSU], Michael G. Simpson 4946 [IRVC]

Eriogonum elongatum Benth. - Long-Stem Wild Buckwheat

Eriogonum elongatum var. elongatum - Long-Stem Wild Buckwheat

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1167 [IRVC]

Eriogonum fasciculatum Benth. - California Buckwheat

Eriogonum fasciculatum var. fasciculatum - Coast California Buckwheat

NATIVE, iNat Observations (Note: not determined to variety); Fred M. Roberts 9390 [IRVC]

Eriogonum fasciculatum var. foliolosum (Nutt.) S. Stokes ex Abrams - Inland California Buckwheat

NATIVE, iNat Observations (Note: not determined to variety); CalFlora Observations; Ron Vanderhoff 1094 [IRVC]

Eriogonum gracile Benth. - Slender Buckwheat

Eriogonum gracile var. gracile - Typical Slender Buckwheat

NATIVE, iNat Observations (Note: Not all determined to variety, but presumed this taxon); CalFlora Observations; Ron Vanderhoff 1162 [IRVC]

Polygonum aviculare L. - Knotweed

Polygonum aviculare subsp. aviculare - common knotweed

NATURALIZED (origins uncertain, obscure), iNat Observations (Note: Not all determined to subsp.); CalFlora Observations; Fred M. Roberts 3299 [RSA], Ron Vanderhoff 1178 [IRVC]

Pterostegia drymarioides Fisch. & C.A. Mey. - Granny’s Hairnet

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1337 [IRVC], Sandra J. Leatherman 1090 [OBS]

Rumex californicus Rech. f. - Toothed Willow Dock

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1447 [IRVC]

Rumex conglomeratus Murray - Whorled Dock

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations

Rumex crispus L. - Curly Dock

NATURALIZED (native to Eurasia), iNat Observations; CalFlora Observations; Michael G. Simpson 4952 [IRVC], Ron Vanderhoff 1364 [IRVC], Michael G. Simpson 5068 [IRVC], Rebecca Crowe 712 [OBS]

Rumex hymenosepalus Torr. - Desert Rhubarb

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1278 [IRVC]

Rumex salicifolius Weinm. - Willow Dock

NATIVE, iNat Observations; CalFlora Observations

Rumex spinosus L. - devil's thorn

NATURALIZED (native to Mediterranean), Note: Jepson eflora reference this as Emex spinosa., iNat Observations CalFlora Observations; Ron Vanderhoff 1421 [IRVC]

POLYPODIACEAE

Polypodium californicum Kaulf. - California Polypody

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1287 [IRVC]

PORTULACACEAE

Portulaca oleracea L. - Common Purslane

NATURALIZED (probably native to eastern hemisphere), iNat Observations; CalFlora Observations; Ron Vanderhoff 1127 [IRVC]

PRIMULACEAE

Lysimachia arvensis (L.) U.Manns & Anderb. - Scarlet Pimpernel

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1154 [IRVC]

PTERIDACEAE

Adiantum jordanii C.H. Mull. - California Maidenhair Fern

NATIVE, iNat Observations

Notholaena californica D.C. Eaton - California cloak fern

NATIVE, CalFlora Observations

Pellaea andromedifolia (Kaulf.) Fée - Coffee Fern

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1158 [IRVC]

Pellaea mucronata (D.C. Eaton) D.C. Eaton - Bird’s Foot Cliff-Brake

NATIVE, COLLECTED - PENDING

Pentagramma triangularis (Kaulf.) Yatsk., Windham & E. Wollenw. - California Goldback Fern

NATIVENote: not determined to subspecies, iNat Observations; CalFlora Observations

Pentagramma triangularis subsp. triangularis - goldfern

NATIVE; Ron Vanderhoff 1460 [IRVC], Ron Vanderhoff 1241 [IRVC]

RANUNCULACEAE

Clematis ligusticifolia Nutt. - Western Virgin's Bower

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1119 [IRVC], Ron Vanderhoff 1118 [IRVC]

Delphinium parryi A. Gray - Parry’s Larkspur

NATIVENote: not determined to subspecies., iNat Observations; CalFlora Observations; Ron Vanderhoff 1431 [IRVC]

Delphinium patens Benth. - zigzag larkspur

Delphinium patens subsp. hepaticoideum Ewan - zigzag larkspur

NATIVE, iNat Observations; CalFlora Observations

Ranunculus californicus Benth. - California Buttercup

Ranunculus californicus var. californicus - California Buttercup

NATIVE, iNat Observations (Note: Not all determined to variety, but presumed this taxon); CalFlora Observations; Rebecca E. Crowe 673 [OBS]

RHAMNACEAE

Ceanothus crassifolius Torr. - Hoaryleaf Ceanothus

Ceanothus crassifolius var. crassifolius - Thick-Leaf-Lilac

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1280 [IRVC]

Ceanothus oliganthus Nutt.

NATIVE Note: needs verification to separate from tomentosus., iNat Observations

Frangula californica (Eschsch.) A. Gray - California Coffeeberry

Frangula californica subsp. californica - California Coffeeberry

NATIVE, iNat Observations (Note: Not all determined to subsp., but presumed this taxon); CalFlora Observations; Ron Vanderhoff 1327 [IRVC]

Rhamnus ilicifolia Kellogg - Holly-Leaf Redberry

NATIVE, iNat Observations; CalFlora Observations; Fred M. Roberts 3296 [RSA], Ron Vanderhoff 1213 [IRVC], Sandra J. Leatherman 1093 [OBS]

ROSACEAE

Adenostoma fasciculatum Hook. & Arn. - Chamise

Adenostoma fasciculatum var. fasciculatum - Chamise

NATIVE, iNat Observations (Note: Not all determined to variety); CalFlora Observations; CalFlora Observations; Ron Vanderhoff 1350 [IRVC]

Cercocarpus betuloides Nutt. - Birch-Leaf Mountain-Mahogany

Cercocarpus betuloides var. betuloides - Birch-Leaf Mountain-Mahogany

NATIVE, iNat Observations (Note: Not all determined to variety, but presumed this taxon); CalFlora Observations; Ron Vanderhoff 1117 [IRVC]

Drymocallis glandulosa (Lindl.) Rydb. - Sticky Cinquefoil

NATIVE Note: Not determined to subtaxa, iNat Observations COLLECTED - PENDING

Drymocallis glandulosa var. glandulosa - Sticky Cinquefoil

NATIVE, iNat Observations; CalFlora Observations

Heteromeles arbutifolia (Lindl.) M. Roem. - Toyon

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1089 [IRVC]

Prunus ilicifolia (Nutt. ex Hook. & Arn.) D. Dietr. - Holly-Leaf Cherry

Prunus ilicifolia subsp. ilicifolia - Holly-Leaf Cherry

NATIVE, iNat Observations

Rosa californica Cham. & Schltdl. - California Rose

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1451 [IRVC]

Rubus ursinus Cham. & Schltdl. - California Blackberry

NATIVE, iNat Observations; CalFlora Observations; Fred M. Roberts Jr. 3293 [RSA], Ron Vanderhoff 1238 [IRVC]

RUBIACEAE

Galium angustifolium Nutt. ex Torr. & A. Gray - Narrow-Leaf Bedstraw

Galium angustifolium subsp. angustifolium - Narrow-Leaf Bedstraw

NATIVE, iNat Observations; iNat Observations (not identified to subspecies); CalFlora Observations; Michael G. Simpson 4940 [IRVC]

Galium aparine L. - Common Bedstraw, Goose Grass

NATURALIZED (native to Europe, North Africa, Asia. Note: some references say native to N. Am., including California), iNat Observations; CalFlora Observations; Ron Vanderhoff 1356 [IRVC]

Galium nuttallii A. Gray - San Diego Bedstraw

Galium nuttallii subsp. nuttallii - climbing bedstraw

NATIVE, iNat Observations (Note: Not identified to subsp., although presumed this taxon; only subsp. nutallii known from CA mainland); CalFlora Observations; Ron Vanderhoff 1290 [IRVC]

Galium parisiense L. - Wall Bedstraw

NATURALIZED (native to Mediterranean), iNat Observations; CalFlora Observations; Ron Vanderhoff 1457 [IRVC]

Galium porrigens Dempster - Climbing/Oval-Leaf Bedstraw

NATIVE; Sandra J. Leatherman 1112 [OBS]

RUSCACEAE

Nolina cismontana Dice

NATIVE, Environmental Listing: 1B.2 S3 G3; iNat Observations; CalFlora Observations

RUTACEAE

Citrus limon (L.) Burm. f. - lemon

PERSISTING FROM CULTIVATION (native to Asia, India, Myanmar or China), iNat Observations; Ron Vanderhoff 1305 [IRVC]

Citrus paradisi Macfad.

PERSISTING FROM CULTIVATION (native to Barbados, West Indies), iNat Observations

Citrus sinensis (L.) Osbeck - sweet orange

PERSISTING FROM CULTIVATION (native to southeast Asia), iNat Observations; Ron Vanderhoff 1304 [IRVC]

SALICACEAE

Salix exigua Nutt. - Narrow-Leaf Willow

Salix exigua var. hindsiana (Benth.) Dorn - Hinds's Willow

NATIVE, iNat Observations (Note: Not determined to variety, but presumed this taxon); iNat Observations; CalFlora Observations; Ron Vanderhoff 1456 [IRVC]

Salix gooddingii C.R.Ball - Goodding’s Black Willow

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1380 [IRVC]

Salix laevigata Bebb - Red Willow

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1382 [IRVC]

Salix lasiolepis Benth. - Arroyo Willow

NATIVE, iNat Observations; CalFlora Observations; Fred M. Roberts Jr. 3329 [RSA], Fred M. Roberts 9338 [IRVC], Ron Vanderhoff 1227 [IRVC]

SAPINDACEAE

Dodonaea viscosa (L.) Jacq. - hopseed bush

PERSISTING FROM PLANTING (believed to be a circumpolar native, regions of Africa, the Americas, southern Asia and Australasia); Ron Vanderhoff 1251 [IRVC]

Koelreuteria bipinnata Franch. - goldenrain tree

NATURALIZED (native to southern China), iNat Observations; CalFlora Observations; Ron Vanderhoff 1128 [IRVC]

SAURURACEAE

Anemopsis californica (Nutt.) Hook. & Arn. - Yerba Mansa

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1448 [IRVC]

SAXIFRAGACEAE

Jepsonia parryi (Torr.) Small - Coast Jepsonia

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1161 [IRVC]

Lithophragma affine A. Gray - San Francisco woodland-star

NATIVE, iNat Observations; Emile Fiesler 12 [IRVC]

SCROPHULARIACEAE

Scrophularia californica Cham. & Schltdl. - California Bee Plant/Figwort

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1392 [IRVC]

Verbascum virgatum Stokes - Wand Mullein

NATURALIZED (native to Eurasia), iNat Observations

SELAGINELLACEAE

Selaginella bigelovii Underw. - Bigelow’s Spike-Moss

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1157 [IRVC]

SIMAROUBACEAE

Ailanthus altissima (Mill.) Swingle - tree-of-heaven

NATURALIZED (native to China), iNat Observations; CalFlora Observations; Ron Vanderhoff 1483 [IRVC]

SOLANACEAE

Datura wrightii Regel - Western Jimson Weed

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1149 [IRVC]

Nicotiana glauca Graham - Tree Tobacco

NATURALIZED (native to South America), iNat Observations; CalFlora Observations; Fred Roberts 9340 [IRVC]

Solanum americanum Mill. - White Nightshade

NATIVE, iNat Observations

Solanum douglasii Dunal - Douglas’s Nightshade

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1212 [IRVC]

Solanum elaeagnifolium Cav. - white horsenettle

NATURALIZED (native to central United States, northern Mexico) Note: Stated as native in some references (USDA PLANTS), but here we follow the Jepson eFlora treatment., iNat Observations; CalFlora Observations

Solanum nigrum L. - Black Nightshade

NATURALIZED (native to Eurasia), iNat Observations

Solanum xanti A. Gray - Chaparral Nightshade

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1219 [IRVC]

TAMARICACEAE

Tamarix ramosissima Ledeb. - Saltcedar Tamarisk

NATURALIZED (native to Asia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1074 [IRVC]

THEMIDACEAE

Bloomeria crocea (Torr.) Coville - Common Goldenstar

Bloomeria crocea var. crocea - Common Goldenstar

NATIVE, iNat Observations (Note: Not all determined to variety, but var. crocea the only subtaxa reliably recorded in Southern California); CalFlora Observations; Ron Vanderhoff 1444 [IRVC]

Dipterostemon capitatus (Benth.) Rydb. - School Bells

Dipterostemon capitatus subsp. capitatus (Benth.) Rydb. - School Bells

NATIVE, iNat Observations (Note: Not all determined to subsp., but presumed to be this taxon); CalFlora Observations; Kristin Steckley 9650 [LOB], Ron Vanderhoff 1217 [IRVC]

TYPHACEAE

Typha domingensis Pers. - Southern Cattail

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1475 [IRVC]

ULMACEAE

Ulmus parvifolia Jacq. - Chinese Elm

NATURALIZED (native to eastern Asia), iNat Observations; CalFlora Observations; Ron Vanderhoff 1148 [IRVC]

URTICACEAE

Hesperocnide tenella Torr. - Western Nettle

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1279 [IRVC]

Parietaria hespera Hinton - Western Pellitory

Parietaria hespera var. hespera - Western Pellitory

NATIVE, iNat Observations; CalFlora Observations; Michael G. Simpson 4931 [IRVC], Ron Vanderhoff 1357 [IRVC]

Urtica dioica L. - Tall Nettle

Urtica dioica subsp. holosericea (Nutt.) Thorne - Hoary Nettle

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1081 [IRVC]

Urtica urens L. - Dwarf Nettle

NATURALIZED (native to Europe), iNat Observations; CalFlora Observations; Ron Vanderhoff 1188 [IRVC], Sandra J. Leatherman 1102 [OBS]

VERBENACEAE

Phyla nodiflora (L.) Greene - Garden Lippia

NATIVE; Robert Allen s.n. [RSA]

Verbena lasiostachys Link - Western Vervain

Verbena lasiostachys var. scabrida Moldenke

NATIVE, iNat Observations (Note: Not all determined to variety); iNat Observations; CalFlora Observations; Ron Vanderhoff 1424 [IRVC]

VIBURNACEAE

Sambucus mexicana C. Presl ex DC. - Blue Elderberry

NATIVE, ; Note: S. nigra L. subsp. caerulea (Raf.) Bolli now considered a synonym; iNat Observations; CalFlora Observations; Michael G. Simpson 4976 [IRVC]

VIOLACEAE

Viola pedunculata Torr. & A. Gray - Johnny Jump-Up

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1311 [IRVC]

VISCACEAE

Phoradendron macrophyllum (Engelm.) Cockerell - Big-Leaf Mistletoe

NATIVE Note: Often treated as Phoradendron leucarpum subsp. macrophyllum, but we follow Mathiasen and Kenaley. 2016. Madroño 63:8-33., iNat Observations; CalFlora Observations; Ron Vanderhoff 1106 [IRVC]

VITACEAE

Vitis girdiana Munson - Southern California Wild Grape

NATIVE, iNat Observations; CalFlora Observations; Ron Vanderhoff 1420 [IRVC]

ZINGIBERACEAE

Hedychium coronarium J.Koenig

WAIF (native to Asia) Note: searched for but unable to relocate in 2023. Likely extirpated., iNat Observations

ZYGOPHYLLACEAE

Tribulus terrestris L. - Puncture Vine

NATURALIZED (native to Mediterranean), CalFlora Observations