Asclepias curassavica Linn., Sp. Pl. 215. 1753. Hook. f., l.c.; Parker, For. Fl. Punj. 3rd ed. 352. 1956; Huber in Abeyw., Fl. Ceylon 1(1): 32. 1973; Spellman l.c.; Stevens l.c.
Erect herb, up to 1 m tall, young branches puberulous. Leaves opposite, petiole 1-2 cm long; lamina 5-16x 1-4 cm, lanceolate to linear-lanceolate, tapering at both ends, glabrous or glabrate. Cymes terminal as well as axillary. Pedicels 1-2 cm long, puberulent. Calyx hidden by the reflexed petals, green, lobes 2-3 mm long. Corolla red to orange red, lobes ovate to oblong, 4-7 (-10) mm long, corona segments erect, broadly ovate, obtuse, 4-5 mm long. Follicles 5.5-10 x 7-10 mm, tapering at both ends. Seeds c. 6 mm long, narrowly winged, dark brown, coma white silky.
Fl. Per.: Throughout the year.
Type: Herb. Linn. 310/18 (LINN).
Distribution: A native of the New World; from Florida to South America and West Indies; commonly cultivated as a garden herb in Pakistan.