pygmy bluet (Houstonia wrightii) river false buttonweed (Spermacoce confusa) scarlet bush (Hamelia patens) shrubby false buttonweed (Spermacoce verticillata) slender false buttonweed (Spermacoce tenuior) starry bedstraw (Galium stellatum) tropical buttonweed (Diodia sarmentosa) tropical girdlepod (Mitracarpus hirtus) white girdlepod (Mitracarpus breviflorus) woodland false buttonweed (Spermacoce assurgens) Rutaceae balsam torchwood (Amyris balsamifera) bitter orange (Citrus aurantium) Dutchman's breeches (Thamnosma texanum) grapefruit (Citrus paradisi) hoptree (Ptelea trifoliata) Key lime (Citrus aurantifolia) lemon (Citrus limon) lime pricklyash (Zanthoxylum fagara) Mexican orange (Choisya dumosa) orange (Citrus sinensis) palo amarillo (Esenbeckia flava) rue (Ruta graveolens) spicebush (Cneoridium dumosum) turpentinebroom (Thamnosma montana) white sapote (Casimiroa edulis) Salicaceae Bonpland willow (Salix bonplandiana) brush holly (Xylosma flexuosa) Frémont cottonwood (Populus fremontii) Goodding's willow (Salix gooddingii) mountain cottonwood (Populus brandegeei) narrowleaf willow (Salix exigua) quaking aspen (Populus tremuloides) yewleaf willow (Salix exilifolia) Salviniaceae Carolina mosuitofern (Azolla caroliniana) Mexican mosquitofern (Azolla mexicana) Pacific mosquitofern (Azolla filiculoides) Santalaceae Bollean mistletoe (Phoradendron bolleanum) downy mistletoe (Phoradendron capitellatum) guacimilla de canario (Phoradendron quadrangulare) Huachuca Mountain dwarf mistletoe (Arceuthobium gillii) juniper mistletoe (Phoradendron juniperinum) mesquite mistletoe (Phoradendron californicum) pineland dwarf mistletoe (Arceuthobium vaginatum) western dwarf mistletoe (Arceuthobium campylopodum) Sapindaceae bigtooth maple (Acer grandidentatum) California buckeye (Aesculus californica) faux persil (Cardiospermum corindum) Florida hopbush (Dodonaea viscosa) love in a puff (Cardiospermum halicacabum) Mexican buckeye (Ungnadia speciosa) moldy bread and cheese (Paullinia fuscescens) Parry buckeye (Aesculus parryi) serpent's tooth vine (Serjania mexicana) western soapberry (Sapindus saponaria) Sapotaceae bebelamo (Sideroxylon occidentale) bully (Sideroxylon persimile) mamey sapote (Pouteria sapota) sapodilla (Manilkara zapota) tempisque (Sideroxylon tepicense) Saururaceae yerba mansa (Anemopsis californica) Saxifragaceae pink alumroot (Heuchera rubescens) redfuzz saxifrage (Saxifraga eriophora) Schisandraceae star anise (Illicium verum) Schoepfiaceae gulf graytwig (Schoepfia schreberi) Scrophulariaceae California figwort (Scrophularia californica) Chihuahuan sage (Leucophyllum laevigatum) common mullein (Verbascum thapsus) goatweed (Capraria biflora) poverty bush (Eremophila decipiens) rain sage (Leucophyllum zygophyllum) Rio Bravo sage (Leucophyllum langmaniae) Rio Grande butterfly bush (Buddleja sessiliflora) Sierra Bouquet sage (Leucophyllum pruinosum) silverleaf sage (Leucophyllum candidum) Texas ranger (Leucophyllum frutescens) woolly butterfly bush (Buddleja marrubiifolia) Selaginellaceae Arizona spikemoss (Selaginella arizonica) Peruvian spikemoss (Selaginella peruviana) resurrection fern (Selaginella novoleonensis) resurrection plant (Selaginella pilifera) rockloving spikemoss (Selaginella rupincola) Underwood's spikemoss (Selaginella underwoodii) Wright's spikemoss (Selaginella wrightii) Simaroubaceae crucifixion thorn (Castela emoryi) Stewart's crucifixion thorn (Castela stewartii) tree of heaven (Ailanthus altissima) Simmondsiaceae jojoba (Simmondsia chinensis) Solanaceae American black nightshade (Solanum americanum) apple of Peru (Nicandra physalodes) Arizona desert-thorn (Lycium exsertum) Baja desert-thorn (Lycium brevipes) Berlandier's wolfberry (Lycium berlandieri) black nightshade (Solanum nigrum) Brazilian nightshade (Solanum