Resedaceae (Mignonette):

Oligomeris linifolia (Oligomeris)

Rhamnaceae (Buckthorn):

Adolphia californica (California adolphia)
Ceanothus
    arboreus (Island ceanothus)
    cordulatus (Mountain whitethorn)
    crassifolius var. crassifolius (Hoaryleaf ceanothus)
    cuneatus var. cuneatus (Buckbrush)
    cyaneus (Lakeside ceanothus)
    greggii var. perplexans, see Ceanothus perplexans
    greggii var. vestitus, see Ceanothus pauciflorus
    integerrimus var. macrothyrsus (Deerbrush)
    leucodermis (Chaparral whitethorn)
    megacarpus var. megacarpus (Big-pod ceanothus)
    oliganthus var. oliganthus (Hairy ceanothus)
    palmeri (Palmer's ceanothus)
    papillosus (Wartleaf ceanothus)
    perplexans (Cupleaf ceanothus)
    pauciflorus (Mojave ceanothus)
    spinosus (Greenbark ceanothus)
    tomentosus (Woollyleaf ceanothus)
    verrucosus (Wartstem ceanothus)
Frangula 
    californica ssp. californica (Coffeeberry)
    californica ssp. cuspidata (Sierra hoary coffeeberry)
    californica ssp. tomentella (Hoary coffeeberry)
Rhamnus
    californica ssp. californica, see Frangula californica ssp. californica
    crocea (Littleleaf redberry)
    ilicifolia (Hollyleaf redberry)
    pirifolia (Island redberry)
    tomentella ssp. cuspidata, see Frangula californica ssp. cuspidata
    tomentella ssp. tomentella, see Frangula californica ssp. tomentella
Ziziphus parryi var. parryi (Lotebush)

Rosaceae (Rose):

Adenostoma
    fasciculatum var. fasciculatum (Chamise)
    fasciculatum var. obtusifolium (San Diego chamise)
    sparsifolium (Red shanks or ribbon bush)
Amelanchier utahensis (Utah serviceberry)
Aphanes occidentalis (Western lady's mantle)
Cercocarpus
    betuloides var. betuloides (Birch-leaf mountain-mahogany)
    betuloides var. blancheae (Island mountain-mahogany)
    intricatus, see Cercocarpus ledifolius var. intricatus
    ledifolius var. intricatus (Little-leaved mountain-mahogany)
    ledifolius var. intermontanus (Curl-leaf mountain-mahogany)
    minutiflorus (San Diego mountain-mahogany)
    traskiae (Catalina Island mountain-mahogany)
Chamaebatia australis (Southern mountain misery)
Chamaebatiaria millefolium (Desert sweet)
Coleogyne ramosissima (Blackbrush)
Drymocallis
    cuneifolia var. ewanii (Ewan's cinquefoil)
    glandulosa var. glandulosa (Inland sticky cinquefoil)
    glandulosa var. reflexa (Double-toothed sticky cinquefoil)
    glandulosa var. viscida (Single-toothed sticky cinquefoil)
    glandulosa var. wrangelliana (Coastal sticky cinquefoil)
    lactea var. lactea (Nevada cinquefoil)
Duchesnea indica var. indica (Mock-strawberry)*
Fallugia paradoxa (Apache plume)
Fragaria vesca (Wild strawberry)
Geum macrophyllum var. perincisum (Large-leaved avens)
Heteromeles arbutifolia (Toyon)
Holodiscus
    discolor var. discolor (Cream bush)
    discolor var. microphyllus (Small-leaved cream bush)
    microphyllus var. microphyllus, see Holodiscus discolor var. microphyllus
Horkelia
    clevelandii var. clevelandii (Cleveland's horkelia)
    cuneata var. cuneata (Wedge-leaf horkelia)
    hispidula (White Mountains horkelia)
    rydbergii (Rydberg's horkelia)
    truncata (Ramona horkelia)
    wilderae (Barton Flats horkelia)
Ivesia
    argyrocoma var. argyrocoma (Silver-haired ivesia)
    callida (Tahquitz ivesia)
    santolinoides (Mousetail ivesia)
    saxosa (Rock ivesia)
Lyonothamnus
    floribundus ssp. aspleniifolius (Fernleaf ironwood)
    floribundus ssp. floribundus (Santa Catalina Island ironwood)
Oemleria cerasiformis (Oso berry)
Petrophytum caespitosum ssp. caespitosum (Rock spiraea)
Physocarpus
    alternans (Nevada ninebark)
    capitatus (Pacific ninebark)
Potentilla
    anserina ssp. anserina (Common silverweed)
    anserina ssp. pacifica (Pacific silverweed)
    biennis (Biennial cinquefoil)
    glandulosa ssp. ewanii, see Drymocallis cuneifolia var. ewanii
    glandulosa ssp. glandulosa in part, see Drymocallis glandulosa var. glandulosa (TR, PR)
    glandulosa ssp. glandulosa in part, see Drymocallis glandulosa var. wrangelliana (SoCO)
    glandulosa ssp. nevadensis, see Drymocallis lactea var. lactea
    glandulosa ssp. reflexa in part, see Drymocallis glandulosa var. reflexa (TR,PR)
    glandulosa ssp. reflexa in part, see Drymocallis glandulosa var. viscida (TR,PR)
    gracilis var. elmeri (Elmer's cinquefoil)
    gracilis var. fastigiata (Slender cinquefoil)
    norvegica (Norwegian cinquefoil)*
    wheeleri (Wheeler's cinquefoil)
Prunus
    andersonii (Desert peach)
    emarginata (Bitter cherry)
    eremophila (Mojave desert plum)
    fasciculata var. fasciculata (Desert almond)
    fremontii (Desert apricot)
    ilicifolia ssp. ilicifolia (Hollyleaf cherry)
    ilicifolia ssp. lyonii (Catalina cherry)
    virginiana var. demissa (Western chokecherry)
Purshia
    mexicana var. stansburyana, see Purshia stansburyana
    stansburyana (Cliff rose)
    tridentata var. glandulosa (Desert bitterbrush)
Pyracantha sp. (Firethorn)**
Rosa
    californica (Wild rose)
    gymnocarpa var. gymnocarpa (Wood rose)
    minutifolia (Small-leaved rose)
    woodsii ssp. gratissima (Interior rose)
Rubus
    armeniacus (Himalaya-berry)*
    discolor, see Rubus armeniacus
    leucodermis (Western raspberry)
    parviflorus (Thimbleberry)
    ursinus (California blackberry)
Sibbaldia procumbens (Sibbaldia)


Rubiaceae (Madder):

Galium
    andrewsii ssp. andrewsii (Andrews' bedstraw)
    andrewsii ssp. intermedium (Phlox-leaved bedstraw)
    angustifolium ssp. angustifolium (Narrow-leaved bedstraw)
    angustifolium ssp. foliosum (Island leafy bedstraw)
    angustifolium ssp. gabrielense (San Antonio Canyon bedstraw)
    angustifolium ssp. gracillimum (Slender bedstraw)
    angustifolium ssp. jacinticum (San Jacinto Mountains bedstraw)
    angustifolium ssp. nudicaule (Naked-stem bedstraw)
    aparine (Annual bedstraw)
    bifolium (Twinleaf bedstraw)
    buxifolium (Boxwood-leaved bedstraw)
    californicum ssp. flaccidum (California bedstraw)
    californicum ssp. miguelense (San Miguel Island bedstraw)
    catalinense (Catalina Island bedstraw)
    grande (San Gabriel bedstraw)
    hallii (Nodding bedstraw)
    hilendiae ssp. hilendiae (Hilend's bedstraw)
    jepsonii (Jepson's bedstraw)
    johnstonii (Johnston's bedstraw)
    murale (Tiny bedstraw)
    nuttallii ssp. insulare (Nuttall's island bedstraw)
    nuttallii ssp. nuttallii (Climbing bedstraw)
    parishii (Parish's bedstraw)
    parisiense (Wall bedstraw)*
    porrigens var. porrigens (Graceful bedstraw)
    stellatum (Star-flowered bedstraw)
    trifidum ssp. columbianum (Sprawling three-petal bedstraw)
    trifidum ssp. subbiflorum (Dwarf three-petal bedstraw)
    wrightii (Wright's bedstraw)
Kelloggia galioides (Kelloggia)
Sherardia arvensis (Field madder)*


Ruscaceae (Ruscus):

Maianthemum
    racemosa (False solomon's seal)
    stellatum (Star-flowered false solomon's seal)
Nolina
    bigelovii (Beargrass)
    cismontana (Chaparral beargrass)
    interrata (Dehesa nolina)
    parryi (Parry's nolina)
Smilacina
    racemosa, see Maianthemum racemosum
    stellata, see Maianthemum stellatum

Rutaceae (Rue):

Cneoridium dumosum (Bushrue)
Ptelea crenulata (Hop tree)
Thamnosma montana (Turpentine-broom)

Salicaceae (Willow):

Populus
    balsamifera ssp. trichocarpa, see Populus trichocarpa
    fremontii ssp. fremontii (Fremont's cottonwood)
    tremuloides (Quaking aspen)
    trichocarpa (Black cottonwood)
Salix
    exigua var. exigua (Sandbar willow)
    exigua var. hindsiana (Hinds' narrowleaf willow)
    geyeriana (Geyer's willow)
    gooddingii (Goodding's black willow)
    laevigata (Red willow)
    lasiolepis (Arroyo willow)
    lemmonii (Lemmon's willow)
    lasiandra var. lasiandra (Shining willow)
    lucida ssp. lasiandra, see Salix lasiandra var. lasiandra
    scouleriana (Scouler's willow)


Sapindaceae (Soapberry):

Acer
    glabrum var. diffusum (Mountain maple)
    macrophyllum (Big-leaf maple)
    negundo (Box elder)
Aesculus californica (California buckeye)


Saururaceae (Lizard-tail):

Anemopsis californica (Yerba mansa)

Saxifragaceae (Saxifrage):

Boykinia
    occidentalis (Coast boykinia)
    rotundifolia (Round-leaved boykinia)
Heuchera
    abramsii (Abrams' alumroot)
    brevistaminea (Mount Laguna alumroot)
    caespitosa (Elegant alumroot)
    hirsutissima (Shaggy-haired alumroot)
    maxima (Island alumroot)
    parishii (San Bernardino Mountains alumroot)
    rubescens (Pink alumroot)
Jepsonia parryi (Parry's jepsonia)
Lithophragma
    affine (Woodland star)
    bolanderi (Bolander's woodland star)
    cymbalaria (Mission woodland star)
    heterophyllum (Hillside woodland star)
    parviflorum var. parviflorum (Smallflower woodland star)
    tenellum (Slender woodland star)
Micranthes californica (California saxifrage)
Saxifraga californica, see Micranthes californica

Scrophulariaceae (Figwort):

Buddleja utahensis (Panamint butterfly bush)
Castilleja, see family Orobanchaceae
Collinsia, see family Plantaginaceae
Cordylanthus, see family Orobanchaceae
Galvezia speciosa, see family Plantaginaceae
Limosella acaulis (Stemless mudwort)
Mimulus, see family Phrymaceae
Myoporum laetum (Myoporum)*
Pedicularis, see family Orobanchaceae
Scrophularia
    californica (California figwort)
    desertorum (Desert figwort)
Verbascum
    thapsus (Woolly mullein)*
    virgatum (Wand mullein)*
Veronica, see family Plantaginaceae


Selaginellaceae (Selaginella):

Selaginella
    asprella (Bluish spike-moss)
    bigelovii (Bigelow's spike-moss )
    cinerascens (Ashy spike-moss)
    eremophila (Desert spike-moss)
    hansenii (Hansen's spike-moss)
    watsonii (Watson's spike-moss)

Simaroubaceae (Quassia or Simarouba):

Ailanthus altissima (Tree of heaven)*
Castela emoryi (Crucifixion thorn)

Simmondsiaceae (Jojoba):

Simmondsia chinensis (Jojoba)

Solanaceae (Nightshade):

Datura
    discolor (Desert thornapple)
    stramonium (Jimsonweed)*
    wrightii (Sacred datura)
Lycium
    andersonii (Anderson's thornbush)
    brevipes var. brevipes (Desert thorn)
    californicum (California boxthorn)
    cooperi (Cooper's boxthorn)
    fremontii (Fremont's thornbush)
    pallidum var. oligospermum (Rabbit thorn)
Lycopersicon esculentum (Common tomato)*
Nicotiana
    attenuata (Coyote tobacco)
    glauca (Tree tobacco)*
    obtusifolia (Desert tobacco)
    quadrivalvis (Indian tobacco)
Petunia parviflora (Wild petunia)
Physalis
    crassifolia (Thick-leaved ground-cherry)
    hederifolia var. fendleri (Fendler's ground-cherry)
    lobata (Lobed ground-cherry)
Solanum
    americanum (Small-flowered nightshade)
    douglasii (White nightshade)
    elaeagnifolium (Silverleaf horse-nettle)*
    parishii (Parish's nightshade)
    umbelliferum (Blue-witch nightshade)
    xanti (Purple nightshade)


Styracaceae (Storax):

Styrax
    officinalis var. redivivus, see Styrax redivivus
     redivivus (Snowdrop bush)


Tamaricaceae (Tamarisk):

Tamarix
    aphylla (Athel)*
    parviflora (Small-flowered tamarisk)*
    ramosissima (Salt cedar)*


Thelypteridaceae (Thelypteris):

Pelazoneuron puberulum var. sonorensis (Sonoran maiden fern)


Themidaceae (Brodiaea):

Bloomeria
    clevelandii (Cleveland's muilla)
    crocea var. crocea (Golden stars)
    crocea var. montana (Mountain golden stars)
Brodiaea
    elegans (Harvest brodiaea)
    filifolia (Thread-leaved brodiaea)
    orcuttii (Orcutt's brodiaea)
    santarosae (Santa Rosa basalt brodiaea)
    terrestris ssp. kernensis (Earth brodiaea)
Dichelostemma, see Dipterostemon
Dipterostemon
    capitatus ssp. capitatus (Blue dicks)
    capitatus ssp. pauciflorus (Few-flowered blue dicks)
Muilla
    clevelandii, see Bloomeria clevelandii
    coronata (Pink funnel lily)
    maritima (Common muilla)
Triteleia
    ixioides ssp. scabra (Pretty face)
    laxa (Ithuriel's spear)
    lugens (Coast range triteleia)


Theophrastaceae (Theophrasta):

Samolus parviflorus (Water-pimpernel)

Typhaceae (Cattail):

Typha
    domingensis (Southern cattail)
    latifolia (Broad-leaved cattail)


Urticaceae (Nettle):

Hesperocnide tenella (Black hair nettle)
Parietaria
    hespera var. hespera (Pellitory)
    pensylvanica (Pennsylvania pellitory)
Urtica
    dioica ssp. holosericea (Hoary nettle)
    urens (Dwarf nettle)*

Valerianaceae (Valerian):

Centranthus ruber (Red valerian)*
Plectritis ciliosa (Long-spurred plectritis)

Verbenaceae (Vervain):

Aloysia wrightii (Wright's beebrush)
Verbena
    bracteata (Big-bract verbena)
    gooddingii (Goodding's verbena)
    lasiostachys var. lasiostachys (Western vervain)
    lasiostachys var. scabrida (Robust vervain)
    menthifolia (Mint-leaved vervain)


Viburnaceae (Viburnum):

Sambucus
    mexicana, see Sambucus nigra ssp. caerulea
    nigra ssp. caerulea (Mexican elderberry)
    racemosa var. racemosa (Red elderberry)

Violaceae (Violet):

Viola
    adunca ssp. adunca (Western dog violet)
    douglasii (Douglas's violet)
    lobata ssp. lobata (Yellow violet)
    macloskeyi (Macloskie's violet)
    pedunculata (Johnny jump up)
    pinetorum ssp. grisea (Gray-leaved violet)
    pinetorum ssp. pinetorum (Pine violet)
    purpurea ssp. mohavensis (Mojave goosefoot violet)
    purpurea ssp. purpurea (Goosefoot violet)
    purpurea ssp. quercetorum (Oak violet)
    sheltonii (Shelton's violet)

Viscaceae (Mistletoe):

Arceuthobium campylopodum (Pine dwarf mistletoe)
Phoradendron
    bolleanum (Bolle's mistletoe)
    californicum (Desert mistletoe)
    densum, see Phoradendron bolleanum
    juniperinum (Juniper mistletoe)
    leucarpum ssp. macrophyllum (Big-leaf mistletoe)
    leucarpum ssp. tomentosum (Oak mistletoe)
    libocedri, see Phoradendron juniperinum
    macrophyllum, see Phoradendron serotinum ssp. macrophyllum
    pauciflorum, see Phoradendron bolleanum
    serotinum ssp. macrophyllum, see P. leucarpum ssp. macrophyllum
    serotinum ssp. tomentosum, see P. leucarpum ssp. tomentosum
    villosum, see Phoradendron serotinum ssp. tomentosum

Vitaceae (Grape):

Vitis girdiana (Wild grape)


Woodsiaceae (Cliff fern):

Woodsia oregana (Oregon cliff fern)


Zygophyllaceae (Caltrop):

Fagonia
    laevis (Smooth-stemmed fagonia)
    pachyacantha (Sticky fagonia)
Kallstroemia
    californica (California kallstroemia)
    parviflora (Few-flowered caltrop)
Larrea tridentata (Creosote bush)
Tribulus terrestris (Puncture vine)*