Roxb.Family: Symphoremataceae.
Habitat: Indo-Malayasian region. Found in Deccan Peninsula, ascending to 1,200 m, and in Bihar, Orissa, Madhya Pradesh and Nagaland.
Folk: Surudu, Konatekkali, Gubbadaara (Telugu).Action: Quercetin, isolated from fresh water flowers, exhibited anti-inflammatory activity experimentally, comparable to that of phenylbutazone.