Roxb.Family: Sterculiaceae.
Habitat: Rajasthan, Assam, Bihar, Uttar Pradesh, Madhya Pradesh, southwards to Western Peninsula.
English: Karaya Gum.Unani: Gond Kateeraa (the authentic source is Cochlospermum religiosum).Siddha/Tamil: Kavalam.Folk: Karai, Kandol (Maharashtra, Gujarat).Action: Gum used as a substitute for tragacanth in throat affections.
The gum and mucilage contain al- dobiuronic and aldotriouronic acids.The roots contains a coumarin, sco- poletin.The leaves afforded flavonol glycosides, quercetin and kaempferol derivatives; beta-amyrin, its acetyl derivative, beta-sitosterol and an ester of terephthalic acid. Stercurensin, a C- methylchalcone, has been isolated from the leaves.The gum of Sterculia villosa Roxb. (Udall Wood) resembles with that of S. urens. Diometin and chrysoeriol and their 7-O-glucosides were isolated from the wood.