Authors: Michael G. Simpson

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Families: 115
Genera: 385
Species: 612
Total Taxa (details): 635

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NATURALIZED (probably native to southern Africa); Jon P. Rebman 11178 [SD]
NATURALIZED (native to southern Africa), Note: Treated as Aizoon pubescens Eckl. & Zeyh. in some references; Dick Schwenkmeyer 342 [UCR], Schwenkmeyer, Dick 342 [SDSU], Millie Basden-Thomas 92 [SD], Dick Schwenkmeyer 342 [SD], more...
Mesembryanthemum nodiflorum L. - Slender-Leaf Iceplant
NATURALIZED (native to southern Africa); Jeannie Gregory 3048 [SD]
Atriplex semibaccata R. Br. - Australian Saltbush
NATURALIZED (native to Australia); Simpson, Michael G. 13VII96E [SDSU]
Atriplex suberecta I. Verd. - Peregrine Saltbush
NATURALIZED (native to Australia); Joe Barth 2049 [UCR], Joe Barth 2049 [SD]
NATURALIZED (native to Europe). Note: A recent name change from Chenopodium murale; see Fuentes-Bazan, et al. 2012.; Joe Barth 1027 [UCR], Simpson, Michael G. 15III98B [SDSU], Joe Barth 1027 [SD]
Salsola australis R. Br. - Australian Tumbleweed
NATURALIZED (possibly native to Australia); Joe Barth 1894 [SD], Joe Barth 1028 [SD]
Schinus molle L. - Peruvian Pepper Tree
NATURALIZED (native to South America); Simpson, Michael G. 3956 [SDSU]
Schinus terebinthifolius Raddi - Brazilian Pepper Tree
NATURALIZED (native to South America); Millie Basden-Thomas 104 [SD], Joe Barth 1025 [SD]
Conium maculatum L. - Common Poison Hemlock
NATURALIZED (native Mexico to South America); Fred Roberts 8056 [SD]
NATIVE Note: A recent name change from Funastrum cynanchoides var. hartwegii; see Fishbein and Gandhi. 2018. Novon 26:165-167; Simpson, Michael G. 3966 [SDSU], Jeannie Gregory 3082A [SD], Millie Basden-Thomas 111 [SD]
NATURALIZED (native to southern Eurasia, northern Africa); Michael G. Simpson 3217 [SD]
NATURALIZED (native to Baja California, Sonora); Simpson, Michael G. 3955 [SDSU]
NATURALIZED (native to southern Africa); Dellavalle, Mary 15III96B [SDSU], Jon P. Rebman 11080 [SD]
Asparagus officinalis L. - Garden Asparagus
NATURALIZED (native to Europe); Frank F. Gander 2573 [SD]
Asphodelus fistulosus L. - Hollow-Stem Asphodel
Pluchea odorata (L.) Cass. - Salt Marsh Fleabane
Sonchus asper (L.) Hill - Prickly Sow-Thistle
Berberis pinnata Lag. - wavyleaf barberry
Lepidium virginicum L. - Virginia Peppercress
Herniaria hirsuta L. - hairy rupturewort
Silene laciniata Cav. - Mexican/Southern Pink
Cuscuta californica Hook. & Arn. - California/Chaparral Dodder
Equisetum hyemale L. - western scouringrush
Vicia villosa Roth - Hairy Vetch, Winter Vetch
Juncus acutus L. - spiny rush
Stachys rigida Nutt. ex Benth. - Rigid Hedge-Nettle
Calochortus weedii Alph.Wood - Weed's Mariposa Lily
Camissonia hirtella (Greene) P.H. Raven - Santa Cruz Island suncup
Epilobium canum (Greene) P.H. Raven - California Fuchsia, Hummingbird Trumpet
Oenothera elata Kunth - Tall Evening-Primrose
Cordylanthus rigidus (Benth.) Jeps. - Stiffbranch Bird’s Beak
Diplacus brevipes (Benth.) G.L.Nesom - Slope Semiphore, Widethroat Yellow Monkeyflower
Callitriche heterophylla Pursh - differentleaf waterstarwort
Elymus glaucus Buckley - Blue Wild-Rye
Hordeum murinum L. - Wall Barley