Authors: This checklist is a project of the UC Irvine Herbarium (IRVC). Please contact collections manager with questions, rcrowe@uci.edu.
Locality: The UCI Ecological Preserve is a 60 acre site on the southern edge of the campus located adjacent University Hills, the Irvine Research Park, and the San Joaquin Transportation Corridor. (33.635490, -117.844850)
Notes: This checklist updates taxonomy and builds on the Bowler and Bramlet 2002 checklist and the unpublished 2010 updated checklist by the same authors. Bowler, P.A. and D. Bramlet. 2002 (issued August, 2003). Vascular plants of the University of Califonria, Irvine Ecological Preserve. Crossosoma 28(2): 27-49.

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Families: 59
Genera: 166
Species: 231
Total Taxa (details): 235
Amaranthus albus L. - White Tumbleweed
Schinus terebinthifolius Raddi - Brazilian Pepper Tree
Conium maculatum L. - Common Poison Hemlock
Asclepias fascicularis Decne. - Narrowleaf Milkweed
Ambrosia psilostachya DC. - Western Ragweed
Artemisia californica Less. - Coastal Sagebrush
Persisting from mitigation planting
Encelia californica Nutt. - California Encelia
Erigeron bonariensis L. - Flax-Leaf Fleabane
Lactuca serriola L. - Prickly Lettuce
Pluchea odorata (L.) Cass. - Salt Marsh Fleabane
Senecio vulgaris - Common Groundsel
Sonchus asper (L.) Hill - Prickly Sow-Thistle
Sonchus oleraceus L. - Common Sow-Thistle
Brassica rapa L. - Wild Turnip
Lepidium virginicum L. - Virginia Peppercress
Sisymbrium irio L. - London Rocket Mustard
Opuntia × occidentalis - Western Prickly-Pear
Spergula arvensis L. - Stickwort, Starwort
Stellaria nitens Nutt. - Shining Chickweed
Atriplex semibaccata R. Br. - Australian Saltbush
Beta vulgaris L. - common beet
Chenopodium album L. - Lamb's Quarters
Salsola tragus L. - tumbleweed
Convolvulus arvensis L. - smallflowered morningglory
Cuscuta californica Hook. & Arn. - California/Chaparral Dodder
Marah macrocarpa (Greene) Greene - Wild Cucumber, Man-root
Croton setiger Hook. - Doveweed, Turkey Mullein
Quercus agrifolia Née - Coast Live Oak
Persisting from mitigation planting
Quercus chrysolepis Liebm. - canyon live oak
Persisting from mitigation planting
Erodium botrys (Cav.) Bertol. - Long-Beak Filaree/Storksbill
Erodium moschatum (L.) L'Hér. ex Aiton - White-Stem Filaree/Storksbill
Phacelia parryi Torr. - Parry’s Phacelia
Transplanted
Scutellaria tuberosa Benth. - Danny's skullcap
Stachys rigida Nutt. ex Benth. - Rigid Hedge-Nettle
Calochortus catalinae S.Watson - Catalina Mariposa Lily
Lythrum hyssopifolia L. - hyssop loosestrife
Lysimachia arvensis - Scarlet Pimpernel
*Bowler and Bramlet 2010 note that there are three species of Eucalyptus
Epilobium canum (Greene) P.H. Raven - California Fuchsia, Hummingbird Trumpet
Oxalis pes-caprae L. - African Wood-Sorrel
Mimulus aurantiacus Curtis - Orange Monkey Flower
Antirrhinum sp. - snapdragon
Plantago elongata Pursh - prairie plantain
Plantago ovata Forssk. - Woolly Plantain
Platanus racemosa Nutt. - Western Sycamore
Persisting from mitigation planting
Limonium perezii (Stapf) F.T. Hubb. - Perez’s Marsh-Rosemary
Avena barbata Pott ex Link - Slender Wild Oat
Avena fatua L. - Insipid Wild Oat
Bromus diandrus Roth - Ripgut Grass
Festuca myuros - Rat-Tail Fescue
Festuca perennis (L.) Columbus & J.P.Sm. - Perennial/Italian Rye Grass
Phalaris minor Retz. - Little-Seed Canary Grass
Schismus barbatus (L.) Thell. - Mediterranean Schismus
Stipa lepida Hitchc. - Foothill Needle Grass
Stipa pulchra Hitchc. - Purple Needle Grass
Pterostegia drymarioides Fisch. & C.A. Mey. - Granny’s Hairnet, G. C. P.
Rumex crispus L. - Curly Dock
Portulaca oleracea L. - Common Purslane
Adiantum jordanii C.H. Mull. - California Maidenhair Fern
Persisting from mitigation planting
Galium aparine L. - Common Bedstraw, Goose Grass
Salix gooddingii C.R. Ball - Goodding’s Black Willow
Persisting from mitigation planting
Salix lasiolepis Benth. - Arroyo Willow
Planted
Persisting from mitigation planting
Datura wrightii Regel - Western Jimson Weed
Nicotiana quadrivalvis Pursh - Four-Valved Tobacco
Solanum douglasii Dunal - Douglas’s Nightshade
Tamarix ramosissima Ledeb. - Saltcedar Tamarisk
Typha domingensis Pers. - Southern Cattail
Typha latifolia L. - Broad-Leaf Cattail
Parietaria hespera Hinton - Western Pellitory
Urtica urens L. - Dwarf Nettle