(Roxb.) DC.Family: Rutaceae.
Habitat: The sub-Himalayan tract from Garhwal to Sikkim; also in Chakrata range.
Folk: Ratanjot (var.), Rowana. Surasi is a doubtful synonym.Action: Bark—anti-inflammatory, spasmolytic; used in veterinary medicine for wounds and sprains.
Aerial parts contain coumarins— clausmarins A and B. Coumarins exhibit spasmolytic activity. The root also contains coumarins. Root and stem bark of Clausena excavata Burm. f. Eastern sub-Himalayan tract, Orissa and Bihar) also contain coumarins— clausenin and clausenidin. The root bark exhibits antibacterial activity against both Gram-positive and Gramnegative bacteria.A related species, C. anisata (Willd.) Oliver, is reported from Uttar Pradesh. Ethanolic extract of the aerial parts exhibited spasmolytic activity. The fu- ranocoumarins, anisolactone, xantho- toxol, indicolactone, imperatorin and 2', 3'-epoxy-anisolactone have been isolated from the extract.In West African traditional medicine, the decoction of the root is given to control convulsions in children. The anticonvulsant agent has been found to be heliettin, extracted from the stem bark and roots.
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