This section is from the book "A Text Book Of Materia Medica, Being An Account Of The More Important Crude Drugs Of Vegetable And Animal Origin", by Henry G. Greenish. Also available from Amazon: A Text Book of Materia Medica : Being an Account of the More Important Crude Drugs of Vegetable and Animal Origin.
Indian valerian is the rhizome and roots of Valeriana Wallichii, de Candolle (N.O. Valerianeoe), which is widely distributed in the temperate Himalayas.
The rhizome is nearly cylindrical, about 5 cm. long and 5 to 10 mm. thick, usually curved or bent, dull brown in colour and marked with raised, encircling leaf-scars and numerous prominent root scars; roots thick and few. The rhizome is hard and tough, breaking with a short fracture and exhibiting a dark section with a large pith and diffuse ring of small wood-bundles. The odour resembles that of valerian.
Indian valerian yields about 1 per cent. of volatile oil of similar nature to that of valerian.