Dried panicles of pistillate flowers of Hagenia abyssinica J. F. Gmel. (Brayera anthelmintica Kunth), Rosaceae. Habit. Abyssinia. Constit. Kosin, kossein, kosidin, protokosin, kosotoxin, volatile oil, tannin. Ref: Leisenring, Arch. Pharm. 232, 50 (1894); Kondakow, ibid. 237, 481 (1899); Hess, Todd, J. Chem. Soc. 1937, 562; Birch, Todd, ibid. 1952, 3102.
Anthelmintic (Cestodes).