Synonyms: Asclepias gigantea L.
Family: Asclepiadaceae - Milkweed family
Growth Habit: Shrub
Bangla/Vernacular Name: Bara akand, Gurakand
Tribal Name: Muru pata (Bawm), Angar pata (Chakma), Jijonma (Marma), Longtho (Murang), Muhurong (Rakhaing), Angorpata gaas (Tanchangya), Hakkon (Tripura).
English Name: Gigantic Swallow wort, Mudar, Swallow Tree.
A tall bushy shrub with white latex, up to 3 m high. Leaves elliptic-oblong or ovate-oblong, thick. Flowers purplish or white, in umbellate lateral cymes. Fruits, a pair of follicles, broad, thick, tapering at both ends.
The principal constituent of the leaves and stems is milky latex, which contains protease enzymes, calotropain FI, calotropain FII, calotropisn DI and DII and uscharine, glutathione, ascorbic acid, calotoxin, calactin and caoutchouc and also a nitrogen and sulphur containing cardiac and fish poison, gigantin. Stem and root barks a- and ß- calotropeols, amyrins, taraxerols, sitosterols, triterpenes and other glycosides. Leaves contain glycolipids, phospholipids, waxes and fatty acids.
Various cardiac glycosides, including calotropin, uscharin, uscharidin and calotoxin and four ursane-type triterpenoids have also been identified in the roots. Presence of a novel insect anti-feedant nonprotein amino acid, giganticine, has been reportd in the root bark (Ghani, 2003). ?-amyrin, ß-amyrin, taraxasterol, ?- taraxasterol and ß-sitosterol have also been isolated from the plant (Rastogi & Mehrotra, 1990).
Calotropis gigantea(L.) Ait. f.
Throughout the country in road side and fallow lands.