| Abronia latifolia | A1x | |
| Abronia umbellata var. umbellata | A1x | |
| Acanthomintha lanceolata | *A2 | 4 |
| Adiantum aleuticum | A1 | |
| Alisma triviale | C | |
| Allenrolfea occidentalis | C | |
| Allium acuminatum | A1 | |
| Allium bolanderi var. bolanderi | A1 | |
| Allium falcifolium | A2 | |
| Allium sharsmithiae | *A2 | 1B |
| Alopecurus saccatus | B | |
| Ambrosia chamissonis | C | |
| Ammannia coccinea | A1 | |
| Ancistrocarphus filagineus | C | |
| Anemopsis californica | B | |
| Aphyllon californicum subsp. jepsonii | A1 | |
| Aphyllon pinorum | A1 | |
| Apocynum cannabinum | B | |
| Aquilegia eximia | A2 | |
| Arabis blepharophylla | *A1x | 4 |
| Aralia californica | C | |
| Artemisia pycnocephala | A1x | |
| Arthrocnemum subterminale | A2 | |
| Aspidotis carlotta-halliae | *A1x | 4 |
| Astragalus tener var. tener | *A2 | 1B |
| Atriplex argentea var. expansa | B | |
| Atriplex coronata var. coronata | *A2 | 4 |
| Atriplex depressa | *A2 | 1B |
| Atriplex dioica | A1x | |
| Atriplex fruticulosa | B | |
| Atriplex leucophylla | B | |
| Atriplex minuscula | *A2 | 1B |
| Balsamorhiza macrolepis | *A1 | 1B |
| Berula erecta | C | |
| Bidens frondosa | B | |
| Bidens laevis | A2 | |
| Bolboschoenus fluviatilis | A1x | |
| Bolboschoenus maritimus subsp. paludosus | C | |
| Calystegia sepium subsp. limnophila | B | |
| Calystegia soldanella | A1x | |
| Camissoniopsis cheiranthifolia subsp. cheiranthifolia | A1 | |
| Campanula exigua | *A2 | 1B |
| Campanula griffinii | A1 | |
| Carex aquatilis var. dives | A1 | |
| Carex barbarae | C | |
| Carex leptopoda | A2 | |
| Carex nudata | B | |
| Carex obnupta | B | |
| Carex senta | A1 | |
| Caulanthus flavescens | A2 | |
| Centromadia parryi subsp. congdonii | *A2 | 1B |
| Cephalanthus occidentalis | A2 | |
| Chloropyron maritimum subsp. palustre | *A1x | 1B |
| Chloropyron molle subsp. hispidum | *A1 | 1B |
| Chloropyron molle subsp. molle | *A2 | 1B |
| Chloropyron palmatum | *A1 | 1B |
| Chorizanthe cuspidata var. cuspidata | *A1x | 1B |
| Chorizanthe robusta var. robusta | *A1x | 1B |
| Cirsium andrewsii | *A1 | 1B |
| Clarkia breweri | *A1 | 4 |
| Clarkia franciscana | *A1 | 1B |
| Claytonia gypsophiloides | B | |
| Clematis ligusticifolia | C | |
| Clintonia andrewsiana | A1 | |
| Collomia diversifolia | *A1 | 4 |
| Cordylanthus nidularius | *A1 | 1B |
| Cornus glabrata | A1 | |
| Cornus sericea subsp. occidentalis | C | |
| Cornus sericea subsp. sericea | C | |
| Cornus sericea subsp. unknown | C? | |
| Crassula aquatica | B | |
| Crassula solieri | A1x | |
| Croton californicus | A2 | |
| Cryptantha clevelandii var. florosa | B | |
| Cyperus erythrorhizos | B | |
| Cyperus strigosus | A1 | |
| Danthonia californica | B | |
| Datisca glomerata | C | |
| Deinandra bacigalupii | *A1 | 1B |
| Deschampsia cespitosa subsp. holciformis | B | |
| Deschampsia danthonioides | C | |
| Diplacus douglasii | A2 | |
| Diplacus tricolor | A1x | |
| Downingia bella | A1x | |
| Downingia cuspidata | A1 | |
| Downingia insignis | A1 | |
| Downingia ornatissima var. mirabilis | A1x | |
| Downingia pulchella | B | |
| Echinodorus berteroi | A2 | |
| Elatine brachysperma | A1 | |
| Elatine californica | A2 | |
| Eleocharis acicularis var. acicularis | B | |
| Eleocharis parishii | A1 | |
| Eleocharis parvula | *A1 | 4 |
| Eleocharis rostellata | A1x | |
| Elymus mollis subsp. mollis | A1x | |
| Elymus multisetus | C | |
| Epilobium campestre | B | |
| Epilobium ciliatum subsp. watsonii | A1 | |
| Epilobium cleistogamum | A1 | |
| Epilobium torreyi | A1 | |
| Epipactis gigantea | A1 | |
| Equisetum laevigatum | A2 | |
| Erigeron philadelphicus var. philadelphicus | C | |
| Eriogonum luteolum var. caninum | *A2 | 1B |
| Eriogonum umbellatum var. bahiiforme | *A2 | 4 |
| Eriophyllum jepsonii | *A2 | 4 |
| Eriophyllum staechadifolium | A2 | |
| Eryngium aristulatum var. hooveri | *A1 | 1B |
| Eryngium armatum | A1 | |
| Eryngium articulatum | A1 | |
| Eryngium castrense | A2 | |
| Eryngium vaseyi var. vallicola | A1 | |
| Erysimum capitatum var. angustatum | *A1 | 1B |
| Erythranthe latidens | A1 | |
| Extriplex joaquinana | *A2 | 1B |
| Festuca californica | C | |
| Festuca idahoensis | C | |
| Festuca rubra | C | |
| Fritillaria falcata | *A1 | 1B |
| Galium trifidum subsp. columbianum | A1 | |
| Gilia capitata subsp. staminea | C | |
| Gilia capitata subsp. unknown | A1? | |
| Helenium bigelovii | A2 | |
| Helianthus californicus | C | |
| Hesperevax caulescens | *A2 | 4 |
| Hesperocyparis sargentii | A1 | |
| Hesperolinon breweri | *A2 | 1B |
| Hesperolinon californicum | B | |
| Hesperolinon clevelandii | A1 | |
| Hibiscus lasiocarpos var. occidentalis | *A2 | 1B |
| Hordeum brachyantherum subsp. californicum | A2 | |
| Hordeum depressum | B | |
| Hosackia oblongifolia var. oblongifolia | A1? | |
| Hydrocotyle ranunculoides | A2 | |
| Hydrocotyle verticillata | B | |
| Isocoma arguta | *A1x | 1B |
| Isoetes howellii | A1 | |
| Isolepis cernua | C | |
| Juncus bufonius var. occidentalis | A1x | |
| Juncus lescurii | A1 | |
| Juncus phaeocephalus var. paniculatus | B | |
| Juncus phaeocephalus var. phaeocephalus | B | |
| Juncus phaeocephalus var. unknown | A2? | |
| Koeleria macrantha | C | |
| Lasthenia conjugens | *A2 | 1B |
| Lasthenia fremontii | A1 | |
| Lasthenia glaberrima | B | |
| Lasthenia glabrata subsp. glabrata | A2 | |
| Lasthenia maritima | A1x | |
| Lasthenia platycarpha | A1 | |
| Lathyrus jepsonii var. jepsonii | *A2 | 1B |
| Layia glandulosa | A1x | |
| Leersia oryzoides | A1 | |
| Legenere limosa | *A1 | 1B |
| Lepidium acutidens | C | |
| Lepidium dictyotum | B | |
| Lepidium latipes | B | |
| Lepidium oxycarpum | A2 | |
| Leptosiphon ambiguus | *A2 | 4 |
| Lessingia hololeuca | *A1x | 3 |
| Lewisia rediviva var. rediviva | A2 | |
| Lilaeopsis masonii | *A2 | 1B |
| Lilium pardalinum subsp. pardalinum | A1 | |
| Limnanthes douglasii subsp. nivea | A1x | |
| Limnanthes douglasii subsp. rosea | A1x | |
| Limonium californicum | C | |
| Limosella acaulis | A2 | |
| Ludwigia palustris | A1x | |
| Lupinus arboreus | A2 | |
| Lupinus chamissonis | A1x | |
| Lycopus americanus | A2 | |
| Lycopus asper | A1 | |
| Lythrum californicum | B | |
| Madia radiata | *A1x | 1B |
| Microseris bigelovii | A1x | |
| Monardella douglasii | A2 | |
| Monardella sheltonii | A1? | |
| Montia fontana | C | |
| Myosotis laxa | A1x | |
| Myosurus minimus subsp. apus | *A1 | 3 |
| Myosurus minimus subsp. minimus | C | |
| Myosurus sessilis | A1 | |
| Navarretia cotulifolia | *A2 | 4 |
| Navarretia heterandra | *A1 | 4 |
| Navarretia intertexta | A2 | |
| Navarretia nigelliformis subsp. nigelliformis | *A2? | 4 |
| Navarretia nigelliformis subsp. radians | *A1 | 1B |
| Navarretia prostrata | *A1 | 1B |
| Nitrophila occidentalis | A1 | |
| Oenothera deltoides subsp. howellii | *A2 | 1B |
| Oenothera elata subsp. hookeri | B | |
| Oxalis oregana | A1 | |
| Perideridia californica | C | |
| Persicaria hydropiperoides | A2 | |
| Persicaria lapathifolia | B | |
| Persicaria punctata | C | |
| Phacelia phacelioides | *A2 | 1B |
| Phalaris arundinacea | A1 | |
| Pilularia americana | A1 | |
| Plagiobothrys acanthocarpus | B | |
| Plagiobothrys glaber | *A1 | 1A |
| Plagiobothrys humistratus | A2 | |
| Plagiobothrys leptocladus | A1 | |
| Plagiobothrys stipitatus var. stipitatus | C | |
| Plantago elongata | B | |
| Plantago maritima | A1x | |
| Plantago subnuda | A2 | |
| Platanus racemosa | C | |
| Pluchea odorata var. odorata | B | |
| Poa douglasii | A1x | |
| Pogogyne douglasii | A1x | |
| Pogogyne zizyphoroides | A2 | |
| Populus trichocarpa | C | |
| Potentilla anserina subsp. pacifica | A2 | |
| Psilocarphus brevissimus var. brevissimus | B | |
| Psilocarphus brevissimus var. multiflorus | *A1? | 4 |
| Psilocarphus chilensis | A1 | |
| Psilocarphus oregonus | A2 | |
| Puccinellia nutkaensis | A1x | |
| Puccinellia nuttalliana | A1 | |
| Puccinellia simplex | *A2 | 1B |
| Quercus durata var. durata | B | |
| Ranunculus lobbii | *A2 | 4 |
| Ranunculus orthorhynchus var. bloomeri | A1x | |
| Rumex crassus | A1 | |
| Rumex fueginus | A2 | |
| Rumex occidentalis | A2 | |
| Rumex salicifolius | B | |
| Rumex salicifolius var. unknown | A2? | |
| Sagittaria latifolia | A1 | |
| Salix gooddingii | B | |
| Salix scouleriana | A2 | |
| Sanicula arctopoides | A1x | |
| Sanicula saxatilis | *A2 | 1B |
| Scirpus microcarpus | C | |
| Sedella pentandra | A1 | |
| Senecio aphanactis | *A1x | 2B |
| Senecio hydrophilus | A1 | |
| Sequoia sempervirens | C | |
| Sesuvium verrucosum | B | |
| Sisyrinchium californicum | A1 | |
| Sium suave | A1 | |
| Sparganium eurycarpum var. eurycarpum | A1 | |
| Sparganium eurycarpum var. greenei | A1 | |
| Spartina foliosa | B | |
| Spergularia macrotheca var. leucantha | A2 | |
| Spergularia macrotheca var. longistyla | *A2 | 1B |
| Spergularia macrotheca var. macrotheca | A2 | |
| Spergularia macrotheca var. unknown | A2? | |
| Spiranthes romanzoffiana | A1 | |
| Sporobolus airoides | A1 | |
| Stachys ajugoides | A2 | |
| Stachys albens | B | |
| Stipa cernua | C | |
| Streptanthus breweri | A1 | |
| Suaeda nigra | B | |
| Symphyotrichum lentum | *A2 | 1B |
| Symphyotrichum subulatum var. parviflorum | B | |
| Tolmiea diplomenziesii | A1x | |
| Trianthema portulacastrum | A1x | |
| Trifolium hydrophilum | *A2 | 1B |
| Triglochin concinna var. concinna | A1 | |
| Triglochin maritima | C | |
| Triglochin scilloides | C | |
| Triglochin striata | B | |
| Trillium ovatum subsp. ovatum | A2 | |
| Verbena hastata | A1 | |
| Viola sempervirens | A2 | |