showy milkweed (Asclepias speciosa) slimpod milkweed (Asclepias quinquedentata) smooth vallesia (Vallesia glabra) Sonoran milkvine (Matelea cordifolia) spearleaf (Matelea parvifolia) Texas milkvine (Matelea producta) tufted milkweed (Asclepias nummularia) wavyleaf twinevine (Funastrum crispum) whitestem milkweed (Asclepias albicans) white twinevine (Funastrum clausum) Wiggins' swallow-wort (Metastelma mexicanum) woolly bluestar (Amsonia tomentosa) woollypod milkweed (Asclepias eriocarpa) yellow oleander (Thevetia peruviana) zizotes milkweed (Asclepias oenotheroides) Aquifoliaceae holly (Ilex rubra) Araceae common duckweed (Lemna minor) least duckweed (Lemna minuta) lesser duckweed (Lemna aequinoctialis) common duckmeat (Spirodela polyrrhiza) Araliaceae Algerian ivy (Hedera canariensis) angelica tree (Dendropanax arboreus) Arizona spikenard (Aralia humilis) floating marshpennywort (Hydrocotyle ranunculoides) manyflower marshpennywort (Hydrocotyle umbellata) papaya cimarrona (Oreopanax peltatum) tropical marshpennywort (Hydrocotyle pusilla) whorled marshpennywort (Hydrocotyle prolifera) Arecaceae apak palm (Brahea dulcis) babisa (Brahea brandegeei) blue hesper palm (Brahea armata) California fan palm (Washingtonia filifera) Mexican fan palm (Washingtonia robusta) date palm (Phoenix dactylifera) Sinaloa hesper palm (Brahea aculeata) Sonoran blue palm (Brahea nitida) Sonoran palmetto (Sabal uresana) Aristolochiaceae calico flower (Aristolochia littoralis) canastilla (Aristolochia taliscana) hierba del indio (Aristolochia quercetorum) southwestern pipevine (Aristolochia brevipes) Watson's Dutchman's pipe (Aristolochia watsonii) Asparagaceae American century plant (Agave americana) Arizona agave (Agave arizonica) azucena del monte (Echeandia ramosissima) banana yucca (Yucca baccata) Bigelow's nolina (Nolina bigelovii) bluedicks (Dipterostemon capitatus) chahuiqui (Agave multifilifera) chaparral yucca (Hesperoyucca whipplei) common sotol (Dasylirion wheeleri) cowhorn agave (Agave bovicornuta) datilillo (Agave datylio) Dehesa beargrass (Nolina interrata) desert agave (Agave deserti) desert lily (Hesperocallis undulata) golden agave (Agave chrysoglossa) goldenflower century plant (Agave chrysantha) Ithuriel's spear (Triteleia laxa) jaiboli (Agave jaiboli) Joshua tree (Yucca brevifolia) large-flowered yucca (Yucca grandiflora) McKelvey agave (Agave mckelveyana) mescal ceniza (Agave colorata) mescalito (Agave felgeri) Mexican star (Milla biflora) Mojave yucca (Yucca schidigera) mountain yucca (Yucca schottii) Murphey's century plant (Agave murpheyi) narrowleaf agave (Agave angustifolia) Navajo yucca (Yucca baileyi) Nelson's beargrass (Nolina nelsonii) night-flowering hesperaloe (Hesperaloe nocturna) ocahui (Agave ocahui) octopus agave (Agave vilmoriniana) Palmer's century plant (Agave palmeri) Palmer's craglily (Echeandia palmeri) Palmer's Bajalily (Triteleiopsis palmeri) Palmer's beargrass (Nolina palmeri) Parry's agave (Agave parryi) Parry's beargrass (Nolina parryi) pink funnel lily (Androstephium breviflorum) sacahuista (Nolina microcarpa) Schott's century plant (Agave schottii) Shaw's agave (Agave shawii) Sierra Madre yucca (Yucca madrensis) small-flowered beargrass (Nolina parviflora) Texas sacahuista (Nolina texana) Tonto Basin agave (Agave delamateri) Torrey's craglily (Echeandia flavescens) Toumey's century plant (Agave toumeyana) tree beargrass (Nolina matapensis) tree yucca (Yucca valida) tuberose-flowered agave (Agave polianthiflora) Utah agave (Agave utahensis) zebra agave (Agave zebra) Asphodelaceae Aloe vera (Aloe