| Agrostis hallii | Hall's bent grass | B |
| Alisma triviale | water plantain | B-PV |
| Allium acuminatum | Hooker's onion | A1 |
| Allium amplectens | narrow-leaved onion | A2 |
| Allium bolanderi var. bolanderi | Bolander's onion | A2 |
| Allium crispum | crinkled onion | A1 |
| Allium falcifolium | sickle-leaved onion | A2 |
| Allium peninsulare var. peninsulare | peninsular onion | A1x |
| Allium sharsmithiae | Sharsmith's onion | *A2 |
| Allium unifolium | one-leaved onion | B-PV |
| Alopecurus saccatus | Howell's meadow foxtail | B |
| Anthoxanthum occidentale | California sweet grass, vanilla grass | A1x |
| Aristida oligantha | oldfield three-awn | A1? |
| Bolboschoenus fluviatilis | river bulrush | A1x |
| Bolboschoenus maritimus subsp. paludosus | bulrush | C |
| Brodiaea terrestris subsp. terrestris | dwarf brodiaea | B-PV |
| Bromus sitchensis var. maritimus | maritime brome, seaside brome grass | A1 |
| Calamagrostis koelerioides | tufted pine grass | A1? |
| Calamagrostis nutkaensis | Pacific reed grass | A1x |
| Calamagrostis rubescens | pine reed grass, pine grass | A2 |
| Calochortus clavatus var. pallidus | club-haired mariposa-lily | A1 |
| Calochortus invenustus | plain mariposa-lily | A1x |
| Calochortus pulchellus | Mount Diablo fairy-lantern | *A2 |
| Calochortus splendens | splendid mariposa-lily | B-PV |
| Calochortus umbellatus | Oakland star-tulip | *A2 |
| Carex aquatilis var. dives | Sitka sedge | A1 |
| Carex barbarae | whiteroot sedge, Santa Barbara sedge, St. Barbara's sedge | C |
| Carex brevicaulis | short-stemmed sedge | A2 |
| Carex comosa | bristly sedge | *A1x |
| Carex densa | dense sedge | B |
| Carex globosa | round-fruited sedge | B |
| Carex gracilior | slender sedge | A1 |
| Carex harfordii | Harford's sedge, Monterey sedge | B |
| Carex laeviculmis | smooth-stemmed sedge | A1 |
| Carex lenticularis var. lipocarpa | few-ribbed sedge | A1 |
| Carex leporina | hare sedge, oval sedge, mountain hare sedge | A1 |
| Carex leptopoda | slender-footed sedge, short-scaled sedge | A2 |
| Carex multicostata | many-ribbed sedge | A1 |
| Carex nebrascensis | Nebraska sedge | B |
| Carex nudata | torrent sedge | C |
| Carex obnupta | slough sedge | B |
| Carex pellita | woolly sedge | A1 |
| Carex praegracilis | black creeper sedge, freeway sedge, deer-bed sedge | B |
| Carex senta | western rough sedge, rough sedge | A1 |
| Carex subbracteata | small-bracted sedge | B |
| Carex unilateralis | one-sided sedge | A1 |
| Chlorogalum pomeridianum var. minus | dwarf soaproot | *A1 |
| Clintonia andrewsiana | red clintonia | A1 |
| Corallorhiza maculata var. maculata | spotted coralroot | A2 |
| Corallorhiza striata | striped coralroot | A1x |
| Cyperus erythrorhizos | red-rooted cyperus | B |
| Cyperus niger | black sedge | B |
| Cyperus odoratus | coarse cyperus | A1 |
| Cyperus strigosus | false nutsedge, straw-colored cyperus | A1 |
| Danthonia californica | California oat grass | B-PV |
| Deschampsia bolanderi | Scribner's grass | B |
| Deschampsia cespitosa subsp. cespitosa | tufted hairgrass | B-PV |
| Deschampsia cespitosa subsp. holciformis | tufted hairgrass | B |
| Deschampsia danthonioides | annual hair grass | B-PV |
| Deschampsia elongata | slender hair grass | B-PV |
| Dichelostemma multiflorum | wild hyacinth, many-flowered brodiaea | A1x |
| Dichelostemma volubile | twining brodiaea, snake lily | A1? |
| Echinodorus berteroi | burhead | A2 |
| Eleocharis acicularis var. acicularis | needle spike-rush | B |
| Eleocharis parishii | Dombey's spike-rush | A1 |
| Eleocharis parvula | small spikerush | *A1 |
| Eleocharis rostellata | beaked spike-rush | A1 |
| Elymus elymoides var. elymoides | squirreltail | B |
| Elymus mollis subsp. mollis | American dune grass, sea lyme grass | A1x |
| Elymus multisetus | big squirreltail | B-PV |
| Elymus stebbinsii | Stebbins' wheat grass, Parish's wheat-grass | A1 |
| Elymus trachycaulus subsp. trachycaulus | slender wheat grass | A1 |
| Epipactis gigantea | stream orchid | A1 |
| Eragrostis hypnoides | | A2 |
| Eragrostis mexicana subsp. virescens | Orcutt's eragrostis | A1 |
| Festuca californica | California fescue | B-PV |
| Festuca elmeri | Elmer's fescue | A2 |
| Festuca idahoensis | Idaho fescue, blue bunchgrass | B-PV |
| Festuca octoflora | sixweeks grass, slender fescue | B-PV |
| Festuca rubra | red fescue | B-PV |
| Fritillaria agrestis | stinkbells | *A2 |
| Fritillaria falcata | talus fritillary | *A1 |
| Fritillaria liliacea | fragrant fritillary | *A2 |
| Glyceria leptostachya | narrow manna grass, Davy's mannagrass | A1 |
| Hordeum brachyantherum subsp. californicum | California barley | A1 |
| Hordeum depressum | low barley, alkali barley | B-PV |
| Hordeum jubatum subsp. jubatum | foxtail barley, squirreltail barley | A2 |
| Iris douglasiana | Douglas iris | B |
| Iris longipetala | coast iris | *A1 |
| Isolepis carinata | dwarf club-rush | A1 |
| Juncus articulatus subsp. articulatus | jointed rush | A1x |
| Juncus bufonius var. occidentalis | western toad rush, toad rush | A1x |
| Juncus dubius | mariposa rush, Mariposa rush | A1x |
| Juncus ensifolius | dagger rush, swordleaved rush, three-stamened rush | A1? |
| Juncus lescurii | San Francisco rush, salt rush | A1 |
| Juncus mexicanus | Mexican rush | C |
| Juncus oxymeris | pointed rush | A1 |
| Juncus phaeocephalus var. paniculatus | panicled rush, brown-headed rush | B |
| Juncus phaeocephalus var. phaeocephalus | brownheaded rush | C |
| Koeleria macrantha | june grass | B-PV |
| Leersia oryzoides | rice cutgrass | A1 |
| Leptochloa fusca subsp. fascicularis | bearded sprangletop | A2 |
| Leptochloa fusca subsp. uninervia | mexican sprangletop, dense-flowered sprangle-top | A1 |
| Lilium pardalinum subsp. pardalinum | leopard lily | A1 |
| Melica bulbosa | onion grass | A1 |
| Melica californica | California melic | B-PV |
| Melica subulata | | A1 |
| Muilla maritima | common muilla | B-PV |
| Panicum capillare | witch grass | A2 |
| Phalaris angusta | narrow canary grass | A1x |
| Phalaris arundinacea | reed canary grass | A1 |
| Phalaris californica | California canary grass | A1x |
| Phalaris lemmonii | Lemmon's canary-grass | A1 |
| Phragmites australis | common reed | B-PV |
| Piperia elegans subsp. elegans | coast piperia, elegant piperia | B-PV |
| Piperia elongata | chaparral orchid, wood rein-orchid, elongate piperia | B-PV |
| Piperia michaelii | Michael's rein-orchid | *A2 |
| Piperia transversa | flat spurred piperia, transverse piperia | B |
| Piperia unalascensis | Alaska piperia, slender-spire orchid | A1 |
| Platanthera dilatata var. leucostachys | white-flowered bog-orchid | A1x |
| Pleuropogon californicus var. californicus | semaphore grass | B-PV |
| Poa douglasii | sanddune bluegrass | A1x |
| Poa howellii | Howell's bluegrass | A2 |
| Potamogeton zosteriformis | eel-grass pondweed | *A1x |
| Prosartes smithii | large-flowered fairy bell | A1x |
| Puccinellia nutkaensis | Alaska alkali grass | A1x |
| Puccinellia nuttalliana | Nuttall's alkali grass | A1 |
| Puccinellia simplex | little alkali grass | *A2 |
| Sagittaria latifolia | arrowhead | A1x |
| Sagittaria montevidensis subsp. calycina | | A1 |
| Schoenoplectus tabernaemontani | soft-stem bulrush | A1x |
| Scoliopus bigelovii | fetid adder's tongue, slink pod | A1x |
| Setaria parviflora | knotroot bristle grass, perennial foxtail | B |
| Sisyrinchium californicum | golden-eyed-grass | A1 |
| Sparganium eurycarpum var. eurycarpum | bur-reed | A1 |
| Sparganium eurycarpum var. greenei | Greene's bur-reed | A1 |
| Spiranthes porrifolia | western ladies' tresses | A1 |
| Spiranthes romanzoffiana | hooded ladies' tresses | A1 |
| Sporobolus airoides | alkali sacaton | A1 |
| Sporobolus foliosus | California cord grass | B |
| Stipa cernua | nodding needlegrass | B-PV |
| Stipa lemmonii var. lemmonii | Lemmon needlegrass | B |
| Stipa lepida | foothill needlegrass | B-PV |
| Stipa pulchra | purple needlegrass | B-PV |
| Stuckenia filiformis subsp. alpina | slender-leaved potamogeton | *A1x |
| Torreyochloa pallida var. pauciflora | weak manna grass | A1x |
| Toxicoscordion paniculatum | panicled zygadene | A1? |
| Toxicoscordion venenosum var. venenosum | death-camas | A1 |
| Triglochin concinna var. concinna | seaside arrow-grass, slender arrow-grass | A2 |
| Triglochin scilloides | flowering-quillwort | C |
| Triglochin striata | three-ribbed arrow-grass | B |
| Trillium ovatum | white trillium | B |
| Trisetum canescens | tall trisetum | A2 |
| Triteleia peduncularis | long-rayed brodiaea | A1 |
| Wolffia brasiliensis | Brazilian watermeal | *A1 |
| Juncus phaeocephalus var. unknown | brown-headed rush | B? |