- Asclepias albicans, Whitestem milkweed
- Asclepias amplexicaulis, Clasping milkweed
- Asclepias arenaria, Sand milkweed
- Asclepias asperula, Spider milkweed
- Asclepias brachystephana, Bract milkweed
- Asclepias californica, California milkweed
- Asclepias cinerea, Carolina Milkweed
- Asclepias connivens, Largeflower Milkweed;Anantherix connivens (Baldw) Feay
- Asclepias cordifolia, Heartleaf milkweed
- Asclepias cryptoceras, Pallid milkweed
- Asclepias curtissii, Curtiss milkweed
- Asclepias cutleri, Cutlers milkweed
- Asclepias emoryi, Emorys milkweed
- Asclepias engelmanniana, Engelmanns milkweed
- Asclepias eriocarpa, Woollypod milkweed
- Asclepias erosa, Desert milkweed
- Asclepias exaltata, Poke milkweed
- Asclepias fascicularis, Mexican whorled milkweed
- Asclepias feayi, Florida milkweed
- Asclepias fruticosa, African milkweed
- Asclepias hallii, Halls milkweed
- Asclepias hirtella, Green milkweed
- Asclepias humistrata, Pinewoods Milkweed
- Asclepias hypoleuca, Mahogany milkweed
- Asclepias incarnata, Swamp milkweed
- Asclepias involucrata, Dwarf milkweed
- Asclepias labriformis, Utah milkweed
- Asclepias lanceolata, Fewflower Milkweed
- Asclepias lanuginosa, Sidecluster milkweed
- Asclepias latifolia, Broadleaf milkweed
- Asclepias lemmonii, Lemmons milkweed
- Asclepias linaria, Pineneedle milkweed
- Asclepias linearis, Slim milkweed
- Asclepias longifolia, Longleaf Milkweed;Acerates delticola Small;Acerates floridana (Lam) Hitchc;Acerates longifolia (Michx) Elliot
- Asclepias macrotis, Longhood milkweed
- Asclepias meadii, Meads milkweed
- Asclepias michauxii, Michauxs Milkweed
| - Asclepias nummularia, Tufted milkweed
- Asclepias nyctaginifolia, Mojave milkweed
- Asclepias obovata, Pineland Milkweed
- Asclepias oenotheroides, Zizotes milkweed
- Asclepias ovalifolia, Oval-leaf milkweed
- Asclepias pedicellata, Savannah Milkweed;Podostigma pedicellata (Walter) Vail
- Asclepias perennis, Aquatic milkweed
- Asclepias prostrata, Prostrate milkweed
- Asclepias pumila, Plains milkweed
- Asclepias purpurascens, Purple milkweed
- Asclepias quadrifolia, Fourleaf milkweed
- Asclepias quinquedentata, Slimpod milkweed
- Asclepias rubra, Red Milkweed;Asclepias laurifolia Michx
- Asclepias rusbyi, Rusbys milkweed
- Asclepias scaposa, Bear Mountain milkweed
- Asclepias solanoana, Serpentine milkweed
- Asclepias speciosa, Showy milkweed
- Asclepias sperryi, Sperrys milkweed
- Asclepias stenophylla, Slimleaf milkweed
- Asclepias subulata, Rush milkweed
- Asclepias subverticillata, Horsetail milkweed
- Asclepias sullivantii, Prairie milkweed
- Asclepias syriaca, Common milkweed
- Asclepias texana, Texas milkweed
- Asclepias tomentosa, Tuba Milkweed
- Asclepias tuberosa, Butterfly milkweed
- Asclepias uncialis, Wheel milkweed
- Asclepias variegata, Redring Milkweed;White Milkweed;Varigated Milkweed
- Asclepias verticillata, Whorled milkweed
- Asclepias vestita, Woolly milkweed
- Asclepias viridiflora, Green comet milkweed
- Asclepias viridula, Southern Milkweed
- Asclepias welshii, Welshs milkweed
- Calotropis gigantea, Giant Calotrope;Asclepias gigantea L;Giant milkweed;Asclepias gigantea
- Funastrum hirtellum, Hairy milkweed
- Sonchus oleraceus, Smooth Sow-thistle;Common sowthistle;Smooth Sow-Thistle;Common Sow-Thistle;Annual Sow-Thistle;Hares Lettuce;Colewort;Milk Thistle;Thistle Milkweed;Milky Tassel;Swinies
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