Synonym ► I. arundinacea Cyr.
Family ► Gramineae; Poaceae.
Habitat ► The hotter parts of India, both in plains and hills, ascending up to 2,300 m in the Himalayas.
English ► Thatch Grass.
Ayurvedic ► Darbha, Suuchyagra, Yagnika, Yagyabhuushana, Bahir.
Siddha/Tamil ► Dharba.
Action ► Diuretic, anti-inflammatory.
The rhizomes contain flavonoids, together with lignans, graminone A and B. A sesquiterpenoid, cylindrene, and biphenylether compounds, cylindol A and B, are also reported.
Cylindrene and graminone B show inhibitory activity on the contractions of vascular smooth muscles and aorta of rabbit respectively; while cylindol A exhibits 5-lipoxygenase inhibitory activity.
The hot aqueous extract of the rhizomes show moderate GTP activity on primary cultured rat hepatocytes intoxicated with carbon tetrachloride cy-totoxicity.
The leaves and stem contain cyano-chroic constituents. The roots contain antibacterial substances. The root is used in fevers but does not possess antipyretic activity.
Family ► Fabaceae.
Habitat ► Cultivated in Assam, Bihar and in parts of Uttar Pradesh.
English ► Natal Indigo, Java Indigo, Bengal Indigo.
Ayurvedic ► Nili (related species).
Aqueous extract of the plant exhibits antihyperglycaemic activity in rats due to insulinotropic property.
The indigotin content of the plant (0.8-1.0%) is higher than that of other species of Indigofera. The leaves contain up to 4% of a flavonol glycoside which on hydrolysis yields rhamnose and kaempferol.
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