Bataceae (Saltwort):

Batis maritima (Saltwort)

Berberidaceae (Barberry):

Berberis
    aquifolium var. repens (Creeping grape holly)
    fremontii (Fremont's barberry)
    nevinii (Nevin's barberry)
    pinnata ssp. pinnata (California barberry)

Betulaceae (Birch):

Alnus rhombifolia (White alder)

Bignoniaceae (Bignonia):

Chilopsis linearis ssp. arcuata (Desert willow)

Blechnaceae (Deer Fern):

Woodwardia fimbriata (Giant chain fern)

Boraginaceae (Borage):

Adelinia grandis (Grand hound's tongue)
Amsinckia
    eastwoodiae (Eastwood's fiddleneck)
    intermedia (Common fiddleneck)
    retrorsa (Rigid fiddleneck)
    spectabilis var. spectabilis (Seaside fiddleneck)
    tessellata var. gloriosa (Bristly fiddleneck)
    tessellata var. tessellata (Checker fiddleneck)
Cryptantha
    barbigera var. barbigera (Bearded cryptantha)
    barbigera var. fergusoniae (Ferguson's bearded cryptantha)
    clevelandii (Cleveland's cryptantha)
    decipiens (Gravel cryptantha)
    dumetorum (Bush-loving cryptantha)
    gracilis (Slender cryptantha)
    intermedia (Large-flowered cryptantha)
    juniperensis (Rigid cryptantha)
    maritima (Guadalupe cryptantha)
    micromeres (Minute-flowered cryptantha)
    microstachys (Tejon cryptantha)
    mohavensis (Mojave cryptantha)
    muricata var. denticulata (Prickly-nut cryptantha)
    muricata var. jonesii (Jones' cryptantha)
    muricata var. muricata (Showy cryptantha)
    nevadensis (Nevada cryptantha)
    oxygona (Sharpnut cryptantha)
    pterocarya (Wingnut cryptantha)
    recurvata (Curvenut cryptantha)
    simulans (Pinewoods cryptantha)
    utahensis (Scented cryptantha)
Eremocarya
    lepida (Mountain red-root cryptantha)
    micrantha var. micrantha (Red-root cryptantha)
Greeneocharis
    circumscissa var. circumscissa (Cushion cryptantha)
    similis (Desert cryptantha)
Harpagonella palmeri (Palmer's grappling hook)
Johnstonella
    angustifolia (Narrow-leaved cryptantha)
    costata (Ribbed cryptantha)
    holoptera (Winged cryptantha)
    racemosa (Bushy cryptantha)
Lappula
    redowskii var. cupulata (Stickseed)
    redowksii var. redowskii (Redowski's stickseed)
Lithospermum incisum (Narrowleaf stoneseed)
Oreocarya
    abortiva (Bownut cryptantha)
    confertiflora(Yellow cryptantha)
    flavoculata (Roughseed cryptantha)
    tumulosa (New York Mountains cryptantha)
Pectocarya
    heterocarpa (Hairy-leaved pectocarya)
    linearis ssp. ferocula (Slender pectocarya)
    penicillata (Winged pectocarya)
    platycarpa (Broad-fruited pectocarya)
    recurvata (Curvenut pectocarya)
    setosa (Bristly pectocarya)
Plagiobothrys
    acanthocarpus (Adobe popcorn flower)
    arizonicus (Arizona popcorn flower)
    canescens var. canescens (Valley popcorn flower)
    collinus var. fulvescens (California popcorn flower)
    fulvus var. campestris (Tawny popcorn flower)
    hispidulus (Harsh popcorn flower)
    nothofulvus (Rusty-haired popcorn flower)
    tenellus (Slender popcorn flower)
    undulatus (Hooked popcorn flower)
Simpsonanthus jonesii (Mojave popcorn flower)


Brassicaceae (Mustard):

Arabidopsis thaliana (Mouse-ear cress)*
Athysanus pusillus (Dwarf athysanus)
Barbarea orthoceras (Winter cress)
Boechera
    arcuata (Arching rock-cress)
    californica (California rock-cress)
    parishii (Parish's rock-cress)
    perennans (Perennial rock-cress)
    platysperma (Broad-seeded rock-cress)
    pulchra (Beautiful rock-cress)
    rectissima (Bristly-leaved rock-cress)
    repanda (Yosemite rock-cress)
    retrofracta X (Mountain rock-cress)
    shockleyi (Shockley's rock-cress)
    xylopoda (Slender beautiful rock-cress)
Brassica
    fruticulosa (Mediterranean cabbage)*
    nigra (Black mustard)*
    rapa (Field mustard)*
    tournefortii (Saharan mustard)*
Cakile maritima (Sea rocket)*
Capsella bursa-pastoris (Shepherd's purse)*
Cardamine
    californica (Milkmaids)
    oligosperma (Bitter cress)
Caulanthus
    amplexicaulis (Clasping-leaved caulanthus)
    anceps (Lemmon's mustard)
    cooperi (Cooper's jewelflower)
    coulteri (Coulter's jewelflower)
    crassicaulis (Thickstem wild cabbage)
    hallii (Hall's caulanthus)
    heterophyllus (Slender-pod jewelflower)
    inflatus (Desert candle)
    lasiophyllus (California mustard)
    major (Slender wild cabbage)
    simulans (Payson's jewelflower)
Chorispora tenella (Crossflower)*
Cusickiella douglasii (Alkali draba)
Descurainia
    californica (Sierra tansy mustard)
    incana (Appressed-fruited mountain tansy mustard)
    incisa ssp. incisa (Mountain tansy mustard)
    pinnata ssp. brachycarpa (Western tansy mustard)
    pinnata ssp. glabra (Tansy mustard)
    sophia (Flix weed)*
Dithyrea californica (Spectacle pod)
Draba
    albertina (Slender draba)
    corrugata (Southern California draba)
    cuneifolia (California draba)
    saxosa (Southern California rock draba)
    verna (Spring draba)
Erysimum
    capitatum var. capitatum (Western wallflower)
    insulare (Island wallflower)
    suffrutescens (Suffrutescent wallflower)
Halimolobos jaegeri (Rock mustard)
Hirschfeldia incana (Shortpod mustard)*
Hornungia procumbens (Prostrate hutchinsia)
Lepidium
    didymum (Wart cress)*
    flavum (Yellow peppergrass)
    fremontii (Desert alyssum)
    lasiocarpum ssp. lasiocarpum (Hairy-podded peppergrass)
    latifolium (Perennial peppergrass)*
    montanum (Mountain peppergrass)
    nitidum var. nitidum (Shiny peppergrass)
    perfoliatum (Clasping pepperweed)*
    virginicum ssp. menziesii (Wild peppergrass)
    virginicum ssp. virginicum (Virginia peppergrass)
Lobularia maritima (Sweet alyssum)*
Lunaria annua (Annual moonwort)*
Lyrocarpa coulteri (Coulter's lyrepod)
Matthiola incana (Garden stock)*
Nasturtium officinale (Watercress)
Physaria
    kingii ssp. bernardina (San Bernardino Mountains bladderpod)
    kingii ssp. kingii (King's bladderpod)
    tenella (Palmer's beadpod)
Raphanus sativus (Wild radish)*
Rorippa
    curvipes (Bluntleaf yellowcress)
    curvisiliqua (Curvepod yellowcress)
    palustris ssp. palustris (Western bog yellowcress)
    sphaerocarpa (Round-fruit yellowcress)
Sisymbrium
    altissimum (Tumble mustard)*
    irio (London rocket)*
    officinale (Hedge mustard)*
    orientale (Oriental mustard)*
Stanleya
    elata (Panamint prince's plume)
    pinnata var. pinnata (Prince's plume)
Streptanthella longirostris (Longbeak streptanthella)
Streptanthus
    bernardinus (Laguna Mountains jewelflower)
    campestris (Southern jewelflower)
    cordatus var. cordatus (Heartleaf jewelflower)
Strigosella africana (African mustard)*
Thelypodium
    integrifolium ssp. affine (Entire-leaved thelypodium)
    stenopetalum (Slender-petalled mustard)
Thysanocarpus
    conchuliferus (Santa Cruz Island fringe-pod)
    curvipes (Fringe-pod)
    laciniatus (Lace-pod)
Tropidocarpum gracile (Dobiepod)
Turritis glabra (Tower mustard)


Burseraceae (Torchwood):

Bursera microphylla (Elephant tree)

Cactaceae (Cactaceae):

Bergerocactus emoryi (Golden-spined cereus)
Carnegiea gigantea (Giant saguaro)
Cylindropuntia
    acanthocarpa var. acanthocarpa (Buckhorn cholla)
    bernardina (Valley cholla)
    bigelovii (Jumping cholla)
    echinocarpa (Silver cholla)
    fosbergii (Fosberg's cholla)
    ganderi (Gander's cholla)
    munzii (Munz's cholla)
    prolifera (Coast cholla)
    ramosissima (Pencil cholla)
    wolfii (Wolf's cholla)
Echinocactus polycephalus var. polycephalus (Cottontop cactus)
Echinocereus
    engelmannii (Engelmann's hedgehog cactus)
    mojavensis (Mojave mound cactus)
Escobaria
    alversonii (Alverson's spinystar)
    chlorantha (Desert spinystar)
    vivipara var. rosea (Rosy spinystar)
Ferocactus
    cylindraceus (California barrel cactus)
    viridescens (Coast barrel cactus)
Grusonia parishii (Mat cholla)
Mammillaria
    dioica (Strawberry cactus)
    tetrancistra (Fishhook cactus)
Opuntia
    basilaris var. basilaris (Beavertail cactus)
    basilaris var. brachyclada (Short-joint beavertail cactus)
    basilaris var. treleasei (Bakersfield cactus)
    chlorotica (Pancake prickly-pear)
    ficus-indica (Mission cactus)*
    oricola (Chaparral prickly-pear)
    phaeacantha (Desert prickly-pear)
    polyacantha var. erinacea (Mojave prickly-pear)
    vaseyi (Vasey's prickly-pear)
    littoralis (Coast prickly-pear)
Sclerocactus
    johnsonii (Johnson's bee-hive cactus)
    polyancistrus (Mojave fishhook cactus)


Calycanthaceae (Calycanthus):

Calycanthus occidentalis (Spicebush)*

Campanulaceae (Bellflower):

Downingia
    bella (Spotted downingia)
    cuspidata (Toothed calicoflower)
Githopsis
    diffusa ssp. candida (White-flowered bluecup)
    diffusa ssp. diffusa (San Gabriel bluecup)
Heterocodon rariflorum (Few-flowered heterocodon)
Lobelia
    cardinalis var. pseudosplendens (Scarlet lobelia)
    dunnii var. serrata (Dunn's lobelia)
Nemacladus
    eastwoodiae (Eastwood's threadplant)
    glanduliferus (Glandular threadplant)
    longiflorus var. breviflorus (Desert short-flowered threadplant)
    longiflorus var. longiflorus (Long-flowered threadplant)
    orientalis (Eastern threadplant)
    parikhiae (Parikh's threadplant)
    pinnatifidus (Comb-leaved threadplant)
    ramosissimus (Smallflower threadplant)
    rubescens (Desert threadplant)
    sigmoideus (Sigmoid threadplant)
    tenuis var. tenuis (Slender threadplant)
    twisselmannii var. botanywomaniae (Botany woman's threadplant)
Triodanis biflora (Venus looking-glass)

Caprifoliaceae (Honeysuckle):

Lonicera
    hispidula (Hairy honeysuckle)
    interrupta (Chaparral honeysuckle)
    involucrata var. ledebourii (Twinberry)
    subspicata var. denudata (Southern honeysuckle)
Symphoricarpos
    albus var. laevigatus (White snowberry)
    longiflorus (Fragrant snowberry)
    mollis (Creeping snowberry)
    rotundifolius var. parishii (Mountain snowberry)

Caryophyllaceae (Pink):

Achyronychia cooperi (Frostmat)
Arenaria
    lanuginosa var. saxosa (Spreading sandwort)
Cardionema ramosissimum (Sandmat)
Cerastium
    fontanum ssp. vulgare (Perennial chickweed)*
    glomeratum (Mouse-ear chickweed)*
Eremogone
    kingii var. glabrescens (King's sandwort)
    macradenia var. arcuifolia (Forest camp sandwort)
    macradenia var. macradenia (Desert sandwort)
    ursina (Bear valley sandwort)
Herniaria hirsuta var. cinerea (Gray herniaria)*
Loeflingia squarrosa (Spreading pygmyleaf)
Petrorhagia dubia (Hairypink)*
Polycarpon tetraphyllum ssp. tetraphyllum (Four-leaf allseed)*
Schizotechium jamesianum (Sticky starwort)
Sabulina
    douglasii (Douglas's stitchwort)
    nuttallii var. gracilis (Brittle sandwort)
    pusilla (Annual sandwort)
Sagina
    apetala (Dwarf pearlwort)*
    decumbens ssp. occidentalis (Western pearlwort)
    saginoides (Alpine pearlwort)
Scopulophila rixfordii (Rixford's rockwort)
Silene
    antirrhina (Sleepy catchfly)
    bernardina (Palmer's catchfly)
    gallica (Windmill pink)*
    krantzii (Krantz's catchfly)
    laciniata ssp. californica (California pink)
    laciniata ssp. laciniata (Mexican pink)
    lemmonii (Lemmon's catchfly)
    menziesii (Menzies' campion)
    multinervia (Many-nerved catchfly)
    parishii (Parish's catchfly)
    verecunda (White catchfly )
Spergula arvensis (Corn spurrey)*
Spergularia
    bocconi (Boccone's sand-spurrey)*
    macrotheca var. macrotheca (Sticky sand-spurrey)
    marina (Salt marsh sand-spurrey)
    rubra (Red sand-spurrey)*
    villosa (Hairy sand-spurrey)*
Stellaria
    calycantha (Northern starwort)
    longipes ssp. longipes (Meadow starwort)
    media (Chickweed)*
    nitens (Shining chickweed)


Celastraceae (Staff-tree):

Euonymus occidentalis var. parishii (Burning bush)
Mortonia utahensis (Mortonia)


Chenopodiaceae (Goosefoot):

Allenrolfea occidentalis (Iodine bush)
Arthrocnemum subterminale (Glasswort)
Atriplex
    amnicola (Swamp saltbush)*
    argentea (Silverscale saltbush)
    canescens var. canescens (Four-wing saltbush)
    canescens var. laciniata (Caleb saltbush)
    canescens var. linearis (Slenderleaf saltbush)
    confertifolia (Shadscale saltbush)
    coulteri (Coulter's saltbush)
    elegans var. fasciculata (Wheelscale saltbush)
    glauca (Waxy saltbush)*
    hymenelytra (Desert-holly)
    lentiformis (Quailbush)
    leucophylla (Beach saltbush)
    pacifica (Pacific saltbush)
    parryi (Parry's saltbush)
    polycarpa (Cattle spinach)
    prostrata (Arrowleaf saltbush)*
    semibaccata (Australian saltbush)*
    torreyi var. torreyi (Torrey's saltbush)
    watsonii (Watson's saltbush)
Bassia hyssopifolia (Five-hook bassia)*
Beta vulgaris ssp. maritima (Sea beet)*
Chenopodium
    album (Lamb's quarters)*
    atrovirens (Forest goosefoot)
    berlandieri (Pitseed goosefoot)
    californicum (California goosefoot)
    desiccatum (Aridland goosefoot)
    fremontii (Fremont's goosefoot)
    hians (Gaping goosefoot)
    macrospermum (Coast goosefoot)*
    murale (Nettleleaf goosefoot)*
    pratericola (Meadow goosefoot)
Dysphania
    ambrosioides (Mexican-tea)*
    botrys (Jerusalem-oak goosefoot )*
Extriplex californica (California saltbush)
Grayia spinosa (Spiny hopsage)
Krascheninnikovia lanata (Winterfat)
Monolepis nuttalliana (Nuttall's poverty weed)
Salicornia
    pacifica (Pacific pickleweed)
Salsola
    paulsenii (Barbwire Russian thistle)*
    tragus (Russian thistle)*
Stutzia covillei (Arrowscale)
Suaeda
    esteroa (Estuary sea-blite)
    nigra (Rush seepweed)
    taxifolia (Woolly sea-blite

Cistaceae (Rock-rose):

Cistus
    incanus (Pink rock-rose)*
    ladanifer var. albiflorus (White-flowered rock-rose)*
    ladanifer var. maculatus (Crimson-spot rock-rose)*
    Xpurpureus (Orchid rock-rose)*
Crocanthemum scoparium var. vulgare (Peak rush-rose)


Cleomaceae (Spiderflower):

Cleomella
    arborea var. arborea (Bladderpod)
    arborea var. globosa (Round-fruited bladderpod)
    obtusifolia (Mojave stinkweed)
    oxystyloides (False-clover)
    sparsifolia (Naked cleome)
Oxystylis lutea (False-clover)


Comandraceae (Bastard toadflax):

Comandra umbellata ssp. californica (California bastard toadflax)


Convolvulaceae (Morning glory):

Calystegia
    collina ssp. venusta (Coast range bindweed)
    macrostegia ssp. amplissima (Southern island morning glory)
    macrostegia ssp. arida (Southern California morning glory)
    macrostegia ssp. cyclostegia (Coast morning glory)
    macrostegia ssp. macrostegia (Northern island morning glory)
    malacophylla ssp. pedicellata (Jepson's morning glory)
    occidentalis ssp. fulcrata (Western morning glory)
    peirsonii (Peirson's morning glory)
    soldanella (Beach morning glory)
Convolvulus
    arvensis (Bindweed)*
    simulans (Small-flowered morning glory)
Cressa truxillensis (Alkali weed)
Cuscuta
    californica var. californica (California dodder)
    californica var. papillosa (Papillate dodder)
    campestris (Western field dodder)
    denticulata (Desert dodder)
    occidentalis (Short-flowered California dodder)
    pacifica var. pacifica (Salt marsh dodder)
    subinclusa (Canyon dodder)
Dichondra occidentalis (Western dichondra)

Cornaceae (Dogwood):

Cornus
    nuttalii (Mountain dogwood)
    sericea ssp. sericea (American dogwood)

Crassulaceae (Stonecrop):

Crassula
    aquatica (Water pygmyweed)
    colligata ssp. lamprosperma (Australian pygmyweed)*
    connata (Pygmyweed)
    tillaea (Moss pygmyweed)*
Dudleya
    abramsii ssp. affinis (San Bernardino Mountains dudleya)
    arizonica (Arizona chalk dudleya)
    attenuata ssp. orcuttii (Orcutt's dudleya)
    caespitosa (Sand-lettuce)
    candelabrum (Candleholder dudleya)
    cymosa ssp. agourensis (Agoura dudleya)
    cymosa ssp. crebrifolia (San Gabriel River dudleya)
    cymosa ssp. cymosa (Canyon dudleya)
    cymosa ssp. pumila (Low canyon dudleya)
    densiflora (San Gabriel Mountains dudleya)
    edulis (Ladies' fingers)
    greenei (Greene's dudleya)
    lanceolata (Lanceleaf dudleya)
    multicaulis (Many-stemmed dudleya)
     pulverulenta (Chalk dudleya)
    saxosa ssp. aloides (Rock dudleya)
    traskiae (Santa Barbara Island dudleya)
    variegata (Variegated dudleya)
    virens ssp. hassei (Hasse's dudleya)
    viscida (Sticky dudleya)
Sedum
    niveum (Davidson's stonecrop)
    spathulifolium (Broad-leaf stonecrop)

Crossosomataceae (Crossosoma):

Crossosoma bigelovii (Rock crossosoma)
Crossosoma californicum (Catalina crossosoma)
Glossopetalon spinescens var. aridum (Spiny greasebush)

Cucurbitaceae (Gourd):

Brandegea bigelovii (Brandegea)
Cucurbita
    foetidissima (Calabazilla)
    palmata (Coyote melon)
Marah
    fabacea (California man-root)
    horrida (Sierra man-root)
    macrocarpa (Wild cucumber)