Asclepias purpurascens purple milkweed Asclepiadaceae ASPU; Bx, pb, vc; Q (DeCandido 2001); R, gb;

   

Asclepias purpurascens,© Copyright Sheryl Pollock 2011 · 8.discoverlife.org

Asclepias purpurascens,© Copyright Sheryl Pollock 2011 · 8.discoverlife.org

Asclepias purpurascens is a perennial herb to 1 m tall; stem erect, finely hairy, sap milky. 

Leaves opposite, stalk to 0.8 to 2.5 cm long, blade 10-15 cm long, elliptic to egg-shaped, finely hairy below, smooth above, base contracted. 

Flowers dark purple, to 1 cm, radially symmetrical (see A. syriaca); inflorescence umbrella-shaped, one or a few flowered, at top of stem; June-July. 

Asclepias purpurascens fruit. R. W. Smith. University of Michigan Herbarium. michiganflora.net

Asclepias purpurascens fruit. R. W. Smith. University of Michigan Herbarium. michiganflora.net (Accessed 10/2017).

Fruit dry, hollow pods 10-15 cm, filled with plumed seeds, held erect, hairy but not warty. 

Wetland status: FACU. 

Frequency in NYC: Infrequent. Rare (NYS S3 U),

Origin: Native. 

Habitat: Upland open woods, meadows.