(Gomphrena nitida) pickleweed (Salicornia virginica) Powell's amaranth (Amaranthus powellii) prince's feather (Amaranthus hypochondriacus) prostrate pigweed (Amaranthus albus) red amaranth (Amaranthus cruentus) Russian thistle (Kali tragus) shadscale (Atriplex confertifolia) slim amaranth (Amaranthus hybridus) Sonoran globe amaranth (Gomphrena sonorae) spiny hopsage (Grayia spinosa) Standley's bloodleaf (Iresine heterophylla) Texas snakecotton (Froelichia interrupta) washerwoman (Alternanthera caracasana) Watson's amaranth (Amaranthus watsonii) Watson's goosefoot (Chenopodium watsonii) wheelscale saltbush (Atriplex elegans) winterfat (Krascheninnikovia lanata) woolly seablite (Suaeda taxifolia) woolly tidestromia (Tidestromia lanuginosa) Wright's saltbush (Atriplex wrightii) Amaryllidaceae cebollín (Hymenocallis pimana) copper zephyrlily (Zephyranthes longifolia) crowpoison (Nothoscordum bivalve) Geyer's onion (Allium geyeri) gland onion (Allium glandulosum) Kunth's onion (Allium kunthii) largeflower onion (Allium macropetalum) Mexicali onion (Allium peninsulare) spider lily (Hymenocallis sonorensis) Texas false garlic (Nothoscordum texanum) Anacardiaceae African sumac (Rhus lancea) aigros (Rhus terebinthifolia) Baja elephant tree (Pachycormus discolor) ciruelo (Cyrtocarpa edulis) evergreen sumac (Rhus virens) fragrant sumac (Rhus aromatica) Kearney's sumac (Rhus kearneyi) laurel sumac (Malosma laurina) lemonadeberry (Rhus integrifolia) littleleaf sumac (Rhus microphylla) mango (Mangifera indica) Peruvian pepper tree (Schinus molle) pink-flowering sumac (Rhus lentii) poison ivy (Rhus radicans) purple mondin (Spondias purpurea) smooth sumac (Rhus glabra) sugarbush (Rhus ovata) Apiaceae alpine false springparsley (Cymopterus lemmonii) American wild carrot (Daucus pusillus) Arizona eryngo (Eryngium sparganophyllum) bristly scaleseed (Spermolepis echinata) chervil (Anthriscus cerefolium) Chiricahua Mountain eryngo (Eryngium lemmonii) coriander (Coriandrum sativum) cow parsnip (Heracleum maximum) culantrillo (Daucus montanus) dill (Anethum graveolens) false carrot (Yabea microcarpa) fennel (Foeniculum vulgare) hierba del sapo (Eryngium nasturtiifolium) hoary bowlesia (Bowlesia incana) Huachuca Mountain eryngo (Eryngium phyteumae) large bullwort (Ammi majus) marsh parsley (Cyclospermum leptophyllum) masiaguri (Tauschia edulis) Mexican hemlockparsley (Conioselinum mexicanum) Schaffner's grasswort (Lilaeopsis schaffneriana) southern umbrellawort (Tauschia arguta) water-hemlock (Cicuta douglasii) western sandparsley (Ammoselinum giganteum) Wright's eryngo (Eryngium heterophyllum) Apocynaceae Arizona bluestar (Amsonia grandiflora) Arizona milkvine (Gonolobus arizonicus) Arizona milkweed (Asclepias angustifolia) Arizona swallow-wort (Metastelma arizonicum) bloodflower milkweed (Asclepias curassavica) bract milkweed (Asclepias brachystephana) California milkweed (Asclepias californica) citavaro (Vallesia laciniata) cockroachplant (Haplophyton cimicidum) Davis Mountain rocktrumpet (Mandevilla hypoleuca) desert milkweed (Asclepias erosa) fringed twinevine (Funastrum cynanchoides) hierba de piojo (Mandevilla foliosa) horsetail milkweed (Asclepias subverticillata) Huachuca Mountain rocktrumpet (Macrosiphonia brachysiphon) Kearney's bluestar (Amsonia kearneyana) Lemmon's milkweed (Asclepias lemmonii) mahogany milkweed (Asclepias hypoleuca) Mexican swallow-wort (Cynanchum ligulatum) Mojave milkweed (Asclepias nyctaginifolia) Nacapule rocktrumpet (Mandevilla nacapulensis) narrowleaf milkweed (Asclepias fascicularis) nodding milkweed (Asclepias glaucescens) oleander (Nerium oleander) Palmer's bluestar (Amsonia palmeri) pineneedle milkweed (Asclepias linaria) plateau rocktrumpet (Mandevilla lanuginosa) plumeria (Plumeria rubra) rubber vine (Cryptostegia grandiflora) rush milkweed (Asclepias subulata)