Merck Index, 7th Edn., p.1011. Often broken into irregular pieces, externally brown and longitudinally wrinkled, with root scars and a somewhat branched crown. The fracture is short and horny, the fractured surface showing alternate layers of brown laticiferous vessels and white parenchyma. A lemon-yellow xylem is also visible. Also present are laticiferous vessels, and brown cork fragments.
Calcium oxalate is absent.
Greenish, 6th Edn., p. 333. Laxative Cholagogue Anti- rheumatic. Atonic dyspepsia with constipation. Combines well with Chamaemelum in anorexia and stomach complaints. Dose 2-8 g or by infusion or decoction.