Asclepias amplexicaulis is a perennial herb from a rhizome, to 80 cm tall, sap milky, plant usually pale, waxy-green (glaucous).
Leaves opposite, oval to broadly oblong, 7-15 cm long, tip blunt, base usually lobed, clasping stem, margin often wavy.
Flowers greenish-purple and pinkish, radially symmetrical (regular) to 1.8 cm long (see A. syriaca); inflorescence, terminal, umbrella-shaped, on a stalk 10-30 cm long, flowers numerous; May-July.
Fruit dry, hollow pods, slender, elongate 10-13 cm long, erect on bent stalks; splitting open to release plumed seeds, dispersed by wind.
Wetland status: UPL.
Frequency in NYC: Very infrequent.
Habitat: Dry open habitats, sandy soil.