Resedaceae (Mignonette):

Oligomeris linifolia (Oligomeris)

Rhamnaceae (Buckthorn):

Adolphia californica (California adolphia)
Ceanothus
    arboreus (Island ceanothus)
    cordulatus (Mountain whitethorn)
    crassifolius (Hoaryleaf ceanothus)
    cuneatus var. cuneatus (Buckbrush)
    cyaneus (Lakeside ceanothus)
    greggii var. perplexans (Cupleaf ceanothus)
    greggii var. vestitus (Mojave ceanothus)
    integerrimus (Deerbrush)
    leucodermis (Chaparral whitethorn)
    megacarpus var. megacarpus (Bigpod ceanothus)
    oliganthus var. oliganthus (Hairy ceanothus)
    oliganthus var. sorediatus (Jim brush)
    palmeri (Palmer's ceanothus)
    spinosus (Greenbark ceanothus)
    tomentosus [var. olivaceous] (Woollyleaf ceanothus)
    verrucosus (Wartstem ceanothus)
Rhamnus
    californica ssp. californica (Coffeeberry)
    crocea (Littleleaf redberry)
    ilicifolia (Hollyleaf redberry)
    pirifolia (Island redberry)
    tomentella ssp. cuspidata (Sierra hoary coffeeberry)
    tomentella ssp. tomentella (Hoary coffeeberry)
Ziziphus parryi var. parryi (Lotebush)

Rosaceae (Rose):

Adenostoma
    fasciculatum (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 (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)
Duchesnea indica (Mock-strawberry)*
Fallugia paradoxa (Apache plume)
Fragaria vesca (Wild strawberry)
Geum macrophyllum (Large-leaved avens)
Heteromeles arbutifolia (Toyon)
Holodiscus
    discolor (Cream bush)
    microphyllus var. microphyllus (Small-leaved cream bush)
Horkelia
    clevelandii (Cleveland's horkelia)
    cuneata (Wedgeleaf horkelia)
    rydbergii (Rydberg's horkelia)
    truncata (Ramona horkelia)
Ivesia
    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)
Petrophyton caespitosum (Rock spiraea)
Physocarpus capitatus (Pacific ninebark)
Potentilla
    anserina ssp. anserina (Silverleaf cinquefoil)
    anserina ssp. pacifica (Silverweed)
    glandulosa ssp. ewanii (Ewan's cinquefoil)
    glandulosa ssp. glandulosa (Sticky cinquefoil)
    glandulosa ssp. nevadensis (Nevada cinquefoil)
    glandulosa ssp. reflexa (Mountain sticky cinquefoil)
    gracilis var. fastigiata (Slender cinquefoil)
    wheeleri (Wheeler's cinquefoil)
Prunus
    andersonii (Desert peach)
    emarginata (Bitter cherry)
    eremophila (Desert prunus)
    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 (Cliff rose)
    tridentata var. glandulosa (Antelope bush)
Pyracantha sp. (Firethorn)**
Rosa
    californica (Wild rose)
    gymnocarpa (Wood rose)
    minutifolia (Small-leaved rose)
    woodsii var. ultramontana (Interior rose)
Rubus
    discolor (Himalaya-berry)*
    leucodermis (Western raspberry)
    parviflorus (Thimbleberry)
    ursinus (California blackberry)
Sibbaldia procumbens (Sibbaldia)

Rubiaceae (Madder):

Galium
    andrewsii ssp. andrewsii (Phlox-leaved bedstraw)
    andrewsii ssp. intermedium (Phlox-leaved bedstraw)
    angustifolium ssp. angustifolium (Narrow-leaved bedstraw)
    angustifolium ssp. foliosum (Leafy bedstraw)
    angustifolium ssp. gabrielense (San Antonio Canyon bedstraw)
    angustifolium ssp. gracillimum (Slender bedstraw)
    angustifolium ssp. jacinticum (San Jacinto Mountains bedstraw)
    aparine (Annual bedstraw)*
    buxifolium (Boxwood-leaved bedstraw)
    californicum ssp. miguelense (San Miguel Island bedstraw)
    catalinense (Catalina Island bedstraw)
    hallii (Nodding bedstraw)
    murale (Tiny bedstraw)
    nuttallii ssp. insulare (Nuttall's island bedstraw)
    nuttallii ssp. nuttallii (Climbing bedstraw)
    parishii (Parish's bedstraw)
    parisiense (Wall bedstraw)*
    stellatum var. eremicum (Star-flowered bedstraw)
    trifidum var. pusillum (Small bedstraw)
Kelloggia galioides (Kelloggia)
Sherardia arvensis (Field madder)*

Rutaceae (Rue):

Cneoridium dumosum (Bushrue)
Thamnosma montana (Turpentine-broom)

Salicaceae (Willow):

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


Sapindaceae (Soapberry):

Koelreuteria elegans (Flamegold)*

Saururaceae (Lizard-tail):

Anemopsis californica (Yerba mansa)

Saxifragaceae (Saxifrage):

Boykinia
    occidentalis (Coast boykinia)
    rotundifolia (Round-leaved boykinia)
Carpenteria californica (Bush anenome)*
Heuchera
    abramsii (Abrams' alumroot)
    brevistaminea (Mount Laguna alumroot)
    elegans (Urn-flowered alumroot)
    hirsutissima (Shaggy-haired alumroot)
    maxima (Island alumroot)
    parishii (San Bernardino Mountains alumroot)
    rubescens var. alpicola (Pink alumroot)
Jepsonia parryi (Parry's jepsonia)
Lithophragma
    affine (Woodland star)
    tenellum (Slender woodland star)
Saxifraga californica (California saxifrage)

Scrophulariaceae (Figwort):

Antirrhinum
    coulterianum (White snapdragon)
    filipes (Desert twining snapdragon)
    kelloggii (Twining snapdragon)
    multiflorum (Rose snapdragon)
    nuttallianum ssp. nuttallianum (Violet snapdragon)
Castilleja
    affinis ssp. affinis (Indian paintbrush)
    angustifolia (Desert indian paintbrush)
    applegatei ssp. martinii (Martin's paintbrush)
    cinerea (Ashy-gray paintbrush)
    densiflora (Dense-flowered owl's clover)
    exserta ssp. exserta (Purple owl's clover)
    foliolosa (Woolly indian paintbrush)
    lanata ssp. hololeuca (Island paintbrush)
    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)
    nana (Dwarf alpine paintbrush)
    plagiotoma (Yellow paintbrush)
    pruinosa (Frosted indian paintbrush)
Collinsia
    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)
Cordylanthus
    maritimus ssp. maritimus (Salt marsh bird's beak)
    nevinii (Nevin's bird's beak)
    orcuttianus (Orcutt's bird's beak)
    parviflorus (Purple bird's beak)
    rigidus ssp. setigerus (Bristly bird's beak)
Galvezia speciosa (Showy island snapdragon)
Digitalis purpurea (Foxglove)*
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. ternata (Whorl-leaf penstemon)
Kickxia elatine (Sharpleaf cancerwort)*
Limosella acaulis (Stemless mudwort)
Linaria canadensis (Blue toadflax)
Maurandya antirrhiniflora ssp. antirrhiniflora (Violet twining snapdragon)
Mimulus
    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 (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 (Primrose monkeyflower)
    purpureus (Purple monkeyflower)
    repicola (Death Valley monkeyflower)
    rubellus (Red-stemmed monkeyflower)
    suksdorfii (Suksdorf's monkeyflower)
    tilingii (Tiling's monkeyflower)
Mohavea
    breviflora (Lesser mohavea)
    confertiflora (Ghost flower)
Pedicularis
    densiflora (Indian warrior)
    semibarbata (Pine lousewort)
Penstemon
    caesius (San Bernardino beardtongue)
    calcareus (Limestone 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)
    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)
Scrophularia
    californica ssp. californica (Coast figwort)
    californica ssp. floribunda (California figwort)
Verbascum
    thapsus (Woolly mullein)*
    virgatum (Wand mullein)*
Veronica
    americama (American speedwell)
    anagallis-aquatica (Water speedwell)*
    arvensis (Corn speedwell)*
    peregrina ssp. xalapensis (Purslane speedwell)
    persica (Persian speedwell)*
    serpyllifolia ssp. humifusa (Thyme-leaved speedwell)*

Selaginellaceae (Selaginella):

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

Simaroubaceae (Quassia or Simarouba):

Castela emoryi (Crucifixion thorn)

Simmondsiaceae (Jojoba):

Simmondsia chinensis (Jojoba)

Solanaceae (Nightshade):

Datura
    discolor (Desert thornapple)
    wrightii (Sacred datura)
Lycium
    andersonii (Anderson thornbush)
    brevipes var. brevipes (Desert thorn)
    californicum (California boxthorn)
    cooperi (Cooper's boxthorn)
    fremontii (Fremont's thornbush)
Lycopersicon esculentum (Common tomato)**
Nicotiana
    attenuata (Coyote tobacco)
    glauca (Tree tobacco)*
    obtusifolia (Desert tobacco)
    quadrivalvis (Indian tobacco)
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)

Sterculiaceae (Cacao):

Ayenia compacta (Ayenia)
Fremontodendron
    californicum ssp. californicum (Flannel bush)
    mexicanum (Mexican flannel bush)

Strelitziaceae (Crane flower):

Strelitzia reginae (Bird-of-paradise)**


Styracaceae (Storax):

Styrax officinalis var. redivivus (Snowdrop bush)

Tamaricaceae (Tamarisk):

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


Taxodiaceae (Bald cypress):

Sequoiadendron giganteum (Giant sequoia)*

Tropaeolaceae (Nasturtium):

Tropaeolum majus (Nasturtium)**

Typhaceae (Cattail):

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

Ulmaceae (Elm):

Celtis reticulata (Western hackberry)


Urticaceae (Nettle):

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

Valerianaceae (Valerian):

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

Verbenaceae (Vervain):

Aloysia wrightii (Vera dulce)
Lantana montevidensis (Lantana)**
Verbena
    bracteata (Bigbract verbena)
    gooddingii (Goodding's verbena)
    lasiostachys var. lasiostachys (Western vervain)
    lasiostachys var. scabrida (Robust vervain)
    menthifolia (Mint-leaved vervain)

Violaceae (Violet):

Viola
    adunca (Blue violet)
    douglasii (Douglas's violet)
    lobata ssp. lobata (Pine violet)
    macloskeyi (Macloskey's violet)
    pedunculata (Johnny-jump-up)
    purpurea ssp. quercetorum (Oak violet)

Viscaceae (Mistletoe):

Arceuthobium
    abietinum (Fir dwarf mistletoe)
    campylopodum (Pine dwarf mistletoe)
Phoradendron
    californicum (Desert mistletoe)
    densum (Dense mistletoe)
    juniperinum (Juniper mistletoe)
    libocedri (Incense-cedar mistletoe)
    macrophyllum (Big leaf mistletoe)
    pauciflorum (Fir mistletoe)
    villosum (Oak mistletoe)

Vitaceae (Grape):

Vitis girdiana (Wild grape)

Zygophyllaceae (Caltrop):

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