Orobanchaceae (Broom-rape):

Boschniakia strobilacea, see Kopsiopsis strobilacea
Castilleja
    affinis ssp. affinis (Coast paintbrush)
    angustifolia, see Castilleja chromosa
    applegatei ssp. martinii (Martin's paintbrush)
    chromosa (Desert indian paintbrush)
    cinerea (Ashy-gray paintbrush)
    densiflora ssp. gracilis (Dense-flowered owl's clover)
    exserta ssp. exserta (Purple owl's clover)
    exserta ssp. venusta (Mojave owl's clover)
    foliolosa (Woolly indian paintbrush)
    hololeuca (Island paintbrush)
    lanata ssp. hololeuca, see Castilleja hololeuca
    lasiorhyncha (San Bernardino Mountains owl's clover)
    linariifolia (Desert paintbrush)
    miniata ssp. miniata (Great red paintbrush)
    minor ssp. spiralis (Lesser indian paintbrush)
    mollis (Soft-leaved indian paintbrush)
    montigena (Heckard's indian paintbrush)
    nana (Dwarf alpine paintbrush)
    plagiotoma (Yellow paintbrush)
    pruinosa (Frosted indian paintbrush)
    tenuis (Hairy owl's clover)
Chloropyron maritimum ssp. maritium (Salt marsh bird's beak)
Cordylanthus
    maritimus ssp. maritimus, see Chloropyron maritium ssp. maritimum
    nevinii (Nevin's bird's beak)
    orcuttianus, see Dicranostegia orcuttiana
    parviflorus (Purple bird's beak)
    rigidus ssp. rigidus (Bristly bird's beak)
    rigidus ssp. setigerus (Bristly bird's beak)
Dicranostegia  orcuttiana (Orcutt's bird's beak)
Kopsiopsis strobilacea (California groundcone)
Orobanche
    bulbosa (Chaparral broom-rape)
    californica ssp. feudgei (California broom-rape)
    cooperi (Cooper's broom-rape)
    fasciculata (Clustered broom-rape)
    parishii ssp. brachyloba (Short-lobed broom-rape)
    parishii ssp. parishii (Parish's broom-rape)
    uniflora (Naked broom-rape)
    valida ssp. valida (Rock Creek broom-rape)
    vallicola (Valley broom-rape)
Pedicularis
    densiflora (Indian warrior)
    semibarbata (Pine lousewort)

Oxalidaceae (Oxalis):

Oxalis
    albicans ssp. californica, see Oxalis californica
    californica (Wild oxalis)
    corniculata (Creeping wood-sorrel)*
    pes-caprae (Bermuda buttercup)*
    pilosa (Hairy wood sorrel)

Paeoniaceae (Peony):

Paeonia californica (Wild peony)

Papaveraceae (Poppy):

Argemone
    corymbosa (Mojave prickly poppy)
    munita (Chicalote)
Canbya candida (Pygmy poppy)
Dendromecon
    hardfordii (Channel Island tree poppy)
    rigida (Bush poppy)
Dicentra
    chrysantha, see Ehrendorferia chrysantha
    ochroleuca, see Ehrendorferia ochroleuca
Ehrendorferia
    chrysantha (Golden ear drops)
    ochroleuca (Bleeding hearts)
Eschscholzia
    caespitosa (Tufted poppy)
    californica (California poppy)
    glyptosperma (Desert gold poppy)
    minutiflora (Little gold poppy)
    parishii (Parish's poppy)
Meconella denticulata (Small-flowered meconella)
Papaver californicum (Fire poppy)
Platystemon californicus (Cream cups)
Romneya
    coulteri (Matilija poppy)
    trichocalyx (Bristly matilija poppy)
Stylomecon heterophylla (Wind poppy)


Parnassiaceae (Parnassus):

Parnassia
    californica, see Parnassia palustris
    palustris (Grass-of-parnassus)


Phrymaceae (Lopseed):

Mimulus
    androsaceus (Rockjasmine monkeyflower)
    aurantiacus (Bush or sticky monkeyflower)
    bigelovii var. bigelovii (Bigelow's monkeyflower)
    bigelovii var. cuspidatus (Bigelow's monkeyflower)
    bolanderi (Bolander's monkeyflower)
    brevipes (Yellow monkeyflower)
    breweri (Brewer's monkeyflower)
    cardinalis (Scarlet monkeyflower)
    clevelandii (Cleveland's bush monkeyflower)
    constrictus (Dense-flowered monkeyflower)
    exiguus (San Bernardino Mountains monkeyflower)
    flemingii (Island bush monkeyflower)
    floribundus (Many-flowered monkeyflower)
    fremontii var. fremontii (Fremont's monkeyflower)
    guttatus (Creek monkeyflower)
    johnstonii (Johnston's monkeyflower)
    moschatus (Musk monkeyflower)
    palmeri (Palmer's monkeyflower)
    parishii (Parish's monkeyflower)
    pilosus (Downy monkeyflower)
    primuloides ssp. primuloides (Primrose monkeyflower)
    purpureus (Purple monkeyflower)
    rupicola (Death Valley monkeyflower)
    rubellus (Red-stemmed monkeyflower)
    shevockii (Kelso Creek monkeyflower)
    suksdorfii (Suksdorf's monkeyflower)
    tilingii (Tiling's monkeyflower)

Phytolaccaceae (Pokeweed):

Phytolacca americana (Pokeweed)*


Picrodendraceae (Bitter-tree):

Tetracoccus
    dioicus (Parry's tetracoccus)
    hallii (Hall's purple bush)

Pinaceae (Pine):

Abies concolor (White fir)
Pinus
    attenuata (Knobcone pine)
    contorta ssp. murrayana (Lodgepole pine)
    coulteri (Coulter pine)
    flexilis (Limber pine)
    halepensis (Aleppo pine)*
    jeffreyi (Jeffrey pine)
    lambertiana (Sugar pine)
    longaeva (Bristlecone pine)
    monophylla (Singleleaf pinyon pine)
    muricata (Bishop pine)
    ponderosa (Yellow pine)
    quadrifolia (Four-needle pinyon pine)
    sabiniana (Gray pine)
    torreyana (Torrey pine)
Pseudotsuga macrocarpa (Big-cone spruce)

Plantaginaceae (Plantain):

Antirrhinum
    coulterianum (White snapdragon)
    filipes (Desert twining snapdragon)
    kelloggii (Twining snapdragon)
    multiflorum (Rose snapdragon)
    nuttallianum ssp. nuttallianum (Violet snapdragon)
Callitriche heterophylla var. bolanderi (Water-starwort)
Collinsia
    bartsiifolia var. davidsonii (Davidson's blue-eyed mary)
    callosa (Desert collinsia)
    childii (Child's collinsia)
    concolor (Southern chinese houses)
    heterophylla (Chinese houses)
    parryi (Parry's collinsia)
    parviflora (Small-flowered collinsia)
    torreyi var. wrightii (Wright's collinsia)
Digitalis purpurea (Foxglove)*
Gambelia speciosa (Showy island snapdragon)
Keckiella
    antirrhinoides var. antirrhinoides (Yellow penstemon)
    antirrhinoides var. microphylla (Little-leaved yellow penstemon)
    cordifolia (Heartleaf penstemon)
    rothrockii var. jacintensis (San Jacinto Mountains keckiella)
    rothrockii var. rothrockii (Rothrock's keckiella)
    ternata var. septentrionalis (Northern blue-stemmed keckiella)
    ternata var. ternata (Whorl-leaf penstemon)
Kickxia elatine (Sharpleaf cancerwort)*
Linaria canadensis var. texana, see Nuttallanthus texanus
Maurandella antirrhiniflora (Violet twining snapdragon)
Maurandya antirrhiniflora ssp. antirrhiniflora, see Maurandella antirrhiniflora
Mohavea
    breviflora (Lesser mohavea)
    confertiflora (Ghost flower)
Nuttalanthus texanus (Blue toadflax)
Penstemon
    caesius (San Bernardino beardtongue)
    calcareus (Limestone beardtongue)
    californicus (California beardtongue)
    centranthifolius (Scarlet bugler)
    clevelandii var. clevelandii (Cleveland's beardtongue)
    clevelandii var. connatus (San Jacinto beardtongue)
    eatonii var. undosus (Firecracker penstemon)
    floridus var. austinii (Austin's beardtongue)
    fruticiformis var. fruticiformis (Desert beardtongue)
    grinnellii var. grinnellii (Grinnell's penstemon)
    grinnellii var. scrophularioides (Grinnell's penstemon)
    heterophyllus var. australis (Foothill penstemon)
    heterophyllus var. heterophyllus (Foothill penstemon)
    labrosus (San Gabriel beardtongue)
    labrosus (yellow variant) (San Gabriel beardtongue)
    laetus var. laetus (Mountain blue penstemon)
    newberryi var. newberryi (Pride of the mountains)
    palmeri var. palmeri (Palmer's penstemon)
    pseudospectabilis (Desert penstemon)
    rostriflorus (Beaked penstemon)
    speciosus (Royal penstemon)
    spectabilis var. spectabilis (Showy penstemon)
    spectabilis var. subviscosus (Showy penstemon)
    stephensii (Stephens' beardtongue)
    thurberi (Thurber penstemon)
    utahensis (Utah penstemon)
Plantago
    arenaria (Sand plantain)*
    coronopus (Cut-leaf plantain)*
    elongata (Longleaf plantain)
    erecta (California plantain)
    lanceolata (English plantain)*
    major (Broad-leaf plantain)*
    ovata (Woolly plantain)
    patagonica (Patagonia plantain)
Veronica
    americama (American speedwell)
    anagallis-aquatica (Water speedwell)*
    peregrina ssp. xalapensis (Purslane speedwell)
    persica (Persian speedwell)*
    serpyllifolia ssp. humifusa (Thyme-leaved speedwell)*

Platanaceae (Sycamore):

Platanus racemosa (Western sycamore)

Plumbaginaceae (Leadwort):

Armeria maritima ssp. californica (California sea-pink)
Limonium  californicum (Sea-lavender)


Poaceae (Grass):

Achnatherum
    aridum. see Stipa arida
    coronatum, see Stipa coronata
    diegoense, see Stipa diegoensis
    hymenoides, see Stipa hymenoides
    occidentale var. occidentale, see Stipa occidentalis var. occidentalis
    parishii, see Stipa parishii var. parishii
    speciosum, see Stipa speciosa
Aegilops cylindrica (Jointed goatgrass)*
Agropyron
    cristatum ssp. pectinatum (Desert crested wheat grass)*
    desertorum, see cristatum ssp. pectinatum
Agrostis
    idahoensis (Idaho bentgrass)
    pallens (Seashore bentgrass)
    viridis, see Polypogon viridis
Alopecurus aequalis var. aequalis (Shortawn foxtail)
Aristida
    adscensionis (Three-awn)
    purpurea var. nealleyi (Nealley three-awn)
Arundo donax (Giant reed)*
Avena
    barbata (Slender oats)*
    fatua (Common wild oats)*
Bouteloua
    aristidoides var. aristodoides (Needle grama)
    eriopoda (Black grama)
    gracilis (Blue grama)
    trifida (Red grama)
Brachypodium distachyon (Purple false-brome)*
Bromus
    berteroanus (Chilean chess)
    carinatus var. carinatus (California brome)
    carinatus var. maritimus, see Bromus maritimus
    diandrus (Ripgut brome)*
    hallii (Hall's brome)
    hordeaceus (Soft chess)*
    madritensis ssp. rubens (Red brome)*
    maritimus (Seaside brome)
    tectorum (Cheat grass)*
    trinii, see Bromus berteroanus
Cortaderia selloana (Pampas grass)*
Cynodon dactylon (Bermuda grass)*
Dactylis glomerata (Orchard grass)*
Dasyochloa pulchella (Fluff grass)
Deschampsia elongata (Slender hairgrass)
Distichlis spicata (Salt grass)
Elymus
    elymoides ssp. brevifolius (Short-leaved squirreltail)
    elymoides ssp. californicus (California squirreltail)
    glaucus ssp. glaucus (Blue wildrye)
    hispidus (Intermediate wheat grass)*
    ponticus (Tall wheat grass)*
    trachycaulus ssp. trachycaulus (Slender wheat grass)
Elytrigia
    intermedia ssp. intermedia, see Elymus hispidus
    pontica ssp. pontica, see Elymus ponticus
Erioneuron pulchellum, see Dasyochloa pulchella
Festuca arundinacea (Tall fescue)*
Gastridium
    phleoides (Nit grass)*
    ventricosum, see Gastridium phleoides
Glyceria elata (Fowl mannagrass)
Hilaria rigida (Big galleta grass)
Hordeum
    brachyantherum ssp. californicum (Meadow barley)
    intercedens (Bobtain barley)
    murinum ssp. glaucum (Foxtail barley)*
    murinum ssp. leporinum (Hare barley)*
Koeleria macrantha (Junegrass)
Lamarckia aurea (Goldentop grass)
Leymus
    cinereus (Great Basin wildrye)
    condensatus (Giant wildrye)
    pacificus (Pacific wildrye)
    triticoides (Creeping wildrye)*
Lolium
    multiflorum (Italian ryegrass)*
    temulentum (Darnel)*
Melica
    frutescens (Tall melica)
    imperfecta (Coast range melic)
Monanthochloe littoralis (Shoregrass)
Muhlenbergia
    filiformis (Pullup muhly)
    porteri (Bush muhly)
    richardsonis (Mat muhly)
    rigens (Deergrass)
Nassella
    cernua (Nodding needlegrass)
    lepida (Foothill needlegrass)
    pulchra (Purple needlegrass)
Panicum urvilleanum (Desert panic grass)
Parapholis incurva (Curved sicklegrass)*
Paspalum
    dilatatum (Dallis grass)*
    distichum (Knot grass)
Pennisetum
    clandestinum (Kikuyu grass)*
    setaceum (Fountaingrass)*
Phalaris aquatica (Harding grass)*
Phleum alpinum (Mountain timothy)
Phragmites australis (Common reed)
Piptatherum miliaceum (Smilo grass)*
Pleuraphis rigida, see Hilaria rigida
Poa
    atropurpurea (San Bernardino bluegrass)
    bulbosa (Bulbous bluegrass)*
    douglasii (Sand-dune bluegrass)
    fendleriana ssp. longiligula (Fendler's bluegrass)
    infirma (Weak bluegrass)*
    pratensis ssp. pratensis (Kentucky bluegrass)*
    secunda ssp. juncifolia (Rush bluegrass)
    secunda ssp. secunda (One-sided bluegrass)
Polypogon
    interruptus (Ditch beard grass)*
    monspeliensis (Rabbitsfoot grass)*
    viridis (Green bentgrass)*
Schismus barbatus (Common Mediterranean grass)*
Secale cereale (Cereal rye)*
Spartina foliosa (Cord grass)
Sporobolus airoides (Alkali sacaton)
Stipa
    arida (Mormon needlegrass)
    coronata (Giant stipa)
    diegoensis (San Diego County needlegrass)
    hymenoides (Indian ricegrass)
    occidentalis var. occidentalis (Western needlegrass)
    parishii (Parish's needlegrass)
    speciosa (Desert needlegrass)
Swallenia alexandrae (Eureka Valley dune grass)
Tridens muticus (Slim tridens)
Triticum aestivum (Common wheat)*
Vulpia
    microstachys (Small fescue)
    myuros var. hirsuta (Hairy rattail fescue)*
    octoflora var. hirtella (Six-weeks fescue)
    octoflora var. octoflora (Slender fescue)

Polemoniaceae (Phlox):

Aliciella
    hutchinsifolia (Desert pale gilia)
    latifolia ssp. latifolia (Broad-leaf gilia)
    leptomeria (Great Basin gilia)
    triodon (Sand gilia)
Allophyllum
    divaricatum (Purple false-gilia)
    gilioides ssp. gilioides (Dense false-gilia)
    gilioides ssp. violaceum (Violet false-gilia)
    glutinosum (Sticky false-gilia)
    integrifolium (White false-gilia)
Collomia
    grandiflora (Large-flowered collomia)
    linearis (Slenderleaf collomia)
Eriastrum
    densifolium ssp. austromontanum (Southern mountain woolstar)
    densifolium ssp. elongatum (Giant woolstar)
    densifolium ssp. mohavense (Mojave woolstar)
    densifolium ssp. sanctorum (Santa Ana River woolstar)
    diffusum (Miniature woolstar)
    eremicum ssp. eremicum (Desert woolstar)
    harwoodii (Harwood's woolstar)
    sapphirinum (Sapphire woolstar)
    sparsiflorum (Few-flowered woolstar)
    wilcoxii (Wilcox's woolstar)
Gilia
    aliquanta ssp. aliquanta (Puff-calyx gilia)
    aliquanta ssp. breviloba (Western gilia)
    angelensis (Chaparral gilia)
    australis, see Saltugilia australis
    brecciarum ssp. neglecta (Argus gilia)
    campanulata, see Linanthus campanulatus
    cana ssp. bernardina (Showy gilia)
    cana ssp. triceps (Showy gilia)
    capitata ssp. abrotanifolia (Globe gilia)
    caruifolia, see Saltugilia caruifolia
    clokeyi (Clokey's gilia)
    diegensis (San Diego gilia)
    filiformis, see Linanthus filiformis
    hutchinsifolia, see Aliciella hutchinsifolia
    latiflora ssp. davyi (Davy gilia)
    latiflora ssp. latiflora (Broad-flowered gilia)
    latifolia, see Aliciella latifolia ssp. latifolia
    leptantha ssp. leptantha (Fine-flower gilia)
    leptantha ssp. purpusii (Purpus's gilia)
    leptantha ssp. transversa (Transverse fine-flower gilia)
    maculata, see Linanthus maculatus
    minor (Little gilia)
    modocensis (Modoc gilia)
    ochroleuca ssp. bizonata (Volcanic gilia)
    ochroleuca ssp. exilis (Slender volcanic gilia)
    ochroleuca ssp. vivida (Volcanic gilia)
    ophthalmoides (Eyed gilia)
    scopulorum (Rock gilia)
    sinuata (Rosy gilia)
    splendens ssp. grantii, see Saltugilia splendens ssp. grantii
    splendens ssp. splendens, see Saltugilia ssp. splendens
    stellata (Star gilia)
    transmontana (Transmontane gilia)
    tricolor ssp. diffusa (Birdseye gilia)
    triodon, see Aliciella triodon
Ipomopsis
    arizonica (Arizona ipomopsis)
    polycladon (Spreading gilia)
Langloisia
    setosissima ssp. punctata (Lilac sunbonnets)
    setosissima ssp. setosissima (Bristly langloisia)
Leptodactylon
    californicum, see Linanthus californicus
    jaegeri, see Linanthus jaegeri
    pungens, see Linanthus pungens
Leptosiphon
    aureus ssp. aureus (Golden gilia)
    aureus ssp. decorus (Cream gilia)
    breviculus (Mojave linanthus)
    ciliatus (Whiskerbrush)
    floribundus ssp. floribundus (Summer snow linanthus)
    floribundus ssp. glaber (Summer snow linanthus)
    floribundus ssp. hallii (Santa Rosa Mountains linanthus)
    lemmonii (Lemmon's linanthus)
    liniflorus (Flax-flowered linanthus)
    parviflorus (Common linanthus)
    pygmaeus ssp. continentalis (Pygmy linanthus)
Linanthus
    aureus ssp. aureus, see Leptosiphon aureus ssp. aureus
    aureus ssp. decorus, see Leptosiphon aureus ssp. decorus
    breviculus, see Leptosiphon breviculus
    californicus (Prickly phlox)
    campanulatus (Bell gilia)
    ciliatus, see Leptosiphon ciliatus
    concinnus (San Gabriel linanthus)
    demissus (Desert linanthus)
    dianthiflorus (Ground pink)
    dichotomus ssp. dichotomus (Evening snow)
    filiformis (Threadstem gilia)
    floribundus ssp. glaber, see Leptosiphon floribundus ssp. glaber
    floribundus ssp. hallii, see Leptosiphon floribundus ssp. hallii
    jaegeri (San Jacinto prickly phlox)
    jonesii (Jones' linanthus)
    killipii (Baldwin Lake linanthus)
    maculatus (Little San Bernardino Mountains linanthus)
    parryae (Parry's linanthus)
    parviflorus, see Leptosiphon parviflorus
    pungens (Mountain prickly phlox)
    pygmaeus ssp. continentalis, see Leptosiphon pygmaeus ssp. continentalis
Loeseliastrum
    matthewsii (Desert calico)
    schottii (Schott's calico)
Microsteris gracilis (Common slender phlox)
Navarretia
    atractyloides (Hollyleaf navarretia)
    breweri (Brewer's navarretia)
    fossalis (Spreading navarretia)
    hamata ssp. hamata (Hooked navarretia)
    ojaiensis (Ojai navarretia)
    peninsularis (Baja navarretia)
    prostrata (Prostrate navarretia)
Phlox
    austromontana (Southern mountain phlox)
    condensata (Condensed phlox)
    diffusa (Spreading phlox)
    dolichantha (Big Bear Valley phlox)
    gracilis, see Microsteris gracilis
    stansburyi (Stansbury phlox)
Polemonium occidentale ssp. occidentale (Western sky pilot)
Saltugilia
    australis (Southern gilia)
    caruifolia (Caraway-leaved gilia)
    splendens ssp. grantii (Grant's gilia)
    splendens ssp. splendens (Splendid gilia)

Polygalaceae (Milkwort):

Polygala cornuta var. fishiae (Fish's milkwort)

Polygonaceae (Buckwheat):

Acanthoscyphus
    parishii var. cienegensis (Cienega seca oxytheca)
    parishii var. goodmaniana (Cushenbury oxytheca)
    parishii var. parishii (Parish's oxytheca)
Bistorta bistortoides (Western bistort)
Centrostegia thurberi (Thurber's spineflower)
Chorizanthe
    brevicornu var. brevicornu (Brittle spineflower)
    corrugata (Wrinkled spineflower)
    fimbriata var. fimbriata (Fringed spineflower)
    fimbriata var. laciniata (Lace-fringed spineflower)
    membranacea (Pink spineflower)
    parryi var. fernandina (San Fernando Valley spineflower)
    procumbens (Prostrate spineflower)
    rigida (Rigid spineflower)
    spinosa (Mojave spineflower)
    staticoides (Turkish rugging)
    watsonii (Five-tooth spineflower)
    xanti var. leucotheca (Riverside spineflower)
    xanti var. xanti (Xantus' spineflower)
Dedeckera eurekensis (July gold)
Emex spinosa (Devil's thorn)*
Eriogonum
    angulosum (Angled-stem buckwheat)
    apiculatum (San Jacinto buckwheat)
    arborescens (Santa Cruz Island buckwheat)
    cinereum (Ashy-leaf buckwheat)
    contiguum (Reveal's buckwheat)
    crocatum (Conejo buckwheat )
    davidsonii (Davidson's buckwheat)
    deflexum (Flatcrown buckwheat )
    deserticola (Dune buckwheat)
    elongatum var. elongatum (Longstem buckwheat)
    eremicola (Wildrose Canyon buckwheat)
    fasciculatum var. fasciculatum (California buckwheat)
    fasciculatum var. flavoviride (East Mojave buckwheat)
    fasciculatum var. foliolosum (Leafy buckwheat)
    fasciculatum var. polifolium (Desert wild buckwheat)
    giganteum (St. Catherine's lace)
    gilmanii (Gilman's buckwheat)
    gracile var. gracile (Slender buckwheat)
    grande var. grande (Island buckwheat)
    grande var. rubescens (Red-flowered buckwheat)
    heermannii var. argense (Heermann's buckwheat)
    heermannii var. floccosum (Heermann's buckwheat)
    inflatum (Desert trumpet)
    kennedyi var. alpigenum (Southern alpine buckwheat)
    kennedyi var. austromontanum (Southern mountain buckwheat)
    kennedy var. kennedyi (Kennedy's buckwheat)
    maculatum (Spotted buckwheat)
    microthecum var. johnstonii (Johnston's buckwheat)
    molestum (Pineland buckwheat)
    nidularium (Birdnest buckwheat)
    nudum var. pauciflorum (Few-flowered naked buckwheat)
    nudum var. westonii (Weston's buckwheat)
    ovalifolium var. ovalifolium (Oval-leaved buckwheat)
    ovalifolium var. vineum (Cushenbury buckwheat)
    palmerianum (Palmer's buckwheat)
    panamintense (Panamint buckwheat)
    parishii (Parish's buckwheat)
    parvifolium (Seacliff buckwheat)
    plumatella (Flat-topped buckwheat)
    pusillum (Yellow turban)
    rixfordii (Rixford's buckwheat)
    saxatile (Rock buckwheat)
    thomasii (Thomas' buckwheat)
    thornei (Thorne's buckwheat)
    trichopes (Little desert trumpet)
    umbellatum var. minus (Alpine sulphur-flowered buckwheat)
    umbellatum var. munzii (Munz's buckwheat)
    umbellatum var. nevadense (Nevada buckwheat)
    umbellatum var. subaridum (Sulphur-flowered buckwheat)
    umbellatum var. versicolor (Varicolored buckwheat)
    wrightii var. membranaceum (Wright's buckwheat)
    wrightii var. nodosum (Knotty buckwheat)
    wrightii var. subscaposum (Wright's buckwheat)
    wrightii var. wrightii (Wright's buckwheat)
Lastarriaea coriacea (Leather spineflower)
Oxytheca
    caryophylloides, see Sidotheca caryophylloides
    emarginata, see Sidotheca emarginata
    parishii var. cienegensis, see Acanthoscyphus parishii var. cienegensis
    parishii var. goodmaniana, see Acanthoscyphus parishii var. goodmaniana
    parishii var. parishii, see Acanthoscyphus parishii var. parishii
    perfoliata (Roundleaf oxytheca)
    trilobata, see Sidotheca trilobata
Polygonum
    amphibium var. emersum (Swamp knotweed)
    arenastrum, see Polygonum aviculare ssp. depressum
    aviculare ssp. depressum (Common knotweed)*
    bistortoides, see Bistorta bistortoides
    capitatum (Himalayan smartweed)*
    douglasii ssp. douglasii (Douglas's knotweed)
    douglasii ssp. johnstonii (Douglas's knotweed)
    lapathifolium (Willow smartweed)
    punctatum (Water smartweed)
Pterostegia drymarioides (Threadstem)
Rumex
    acetosella (Sheep sorrel)*
    conglomeratus (Whorled dock)*
    crispus (Curly dock)*
    hymenosepalus (Wild rhubarb)
    pulcher (Fiddle dock)*
    salicifolius var. denticulatus (Willow-leaved dock)
Sidotheca
    caryophylloides (Chickweed oxytheca)
    emarginata (Whitemargin oxytheca)
    trilobata (Threelobe oxytheca)

Polypodiaceae (Polypody):

Polypodium
    californicum (California polypody)
    hesperium (Western polypody)


Portulacaceae (Purslane):

Portulaca
    halimoides (Desert portulaca)
    oleracea (Purslane)*


Potamogetonaceae:

Potemogeton diversifolius (Diverse-leaved pondweed)


Primulaceae (Primrose):

Dodecatheon
    alpinum (Alpine shooting star)
    clevelandii ssp. clevelandii (Shooting star)
    clevelandii ssp. insulare (Island shooting star)
    hendersonii (Foothill shooting star)
    redolens (Fragrant shooting star)

Pteridaceae (Brake):

Adiantum
    aleuticum (Five-finger maidenhair fern)
    capillus-veneris (Maidenhair fern)
    jordanii (California maidenhair fern)
Argyrochosma jonesii (Jones' cloak fern)
Aspidotis californica (California lace fern)
Astrolepis cochisensis (Scaly cloak fern)
Cheilanthes
    clevelandii (Cleveland's lipfern)
    cooperae (Mrs. Cooper's lipfern)
    covillei (Coville's lipfern)
    feei (Slender lipfern)
    newberryi (Cotton fern)
    parryi (Parry's lipfern)
    viscida (Viscid lipfern)
Cryptogramma agrostichoides (American rock-brake)
Notholaena californica (California cloak fern)
Pellaea
    andromedifolia (Coffee fern)
    mucronata var. californica (California cliff brake)
    mucronata var. mucronata (Bird's-foot fern)
    truncata (Cliff brake)
Pentagramma
    triangularis ssp. triangularis (Goldback fern)
    triangularis ssp. viscosa (Silverback fern)
Pteris vittata (Ladder brake)*

Ranunculaceae (Buttercup):

Actaea rubra (Red baneberry)
Aquilegia formosa (Columbine)
Clematis
    lasiantha (Pipestems)
    ligusticifolia (Virgin's bower)
    pauciflora (Ropevine)
Delphinium
    cardinale (Scarlet larkspur)
    glaucum (Mountain larkspur)
    hansenii ssp. kernense (Kern larkspur)
    parishii ssp. pallidum (Pale larkspur)
    parishii ssp. parishii (Desert larkspur)
    parishii ssp. subglobosum (Ocean blue larkspur)
    parryi ssp. parryi (Blue larkspur)
    patens ssp. hepaticoideum (Spreading larkspur)
    patens ssp. montanum (Spreading larkspur)
Ranunculus
    alismifolius var. alismellus (Small water-plantain buttercup)
    aquatilis var. capillaceus (Water buttercup)
    californicus var. californicus (California buttercup)
    cymbalaria var. saximontanus (Rocky Mountain buttercup)
    eschscholtzii var. oxynotus (Eschscholtz's buttercup)
    hebecarpus (Delicate buttercup)
    occidentalis (Western buttercup)
    sceleratus (Cursed crowfoot)
    testiculatus (Tubercled crowfoot)*
Thalictrum
    fendleri var. fendleri (Fendler's meadow-rue)
    fendleri var. polycarpum (pistillate flowers) (Meadow-rue)
    fendleri var. polycarpum (staminate flowers) (Meadow-rue)
    sparsiflorum (Few-flowered meadow-rue)