KOUSSO (Kosso or Cusso)  , a drug which consists of the panicles of the pistillate flowers of Brayera anthelmintica, a handsome rosaceous tree 6o ft. high, growing throughout the table-land of Abyssinia, at an elevation of 3000 to 8000 ft. above the sea-Level . The drug as imported is in the form of cylindrical rolls, about 18 in. in length and 2 in. in diameter, and comprises the entire inflorescence or panicle kept in form by a band wound transversely round it . The active principle is koussin or kosin, C31H33O1o, which is soluble in alcohol and alkalis, and may be given in doses of thirty grains . Kousso is also used in the form of an unstrained infusion of- 4 to z oz. of the coarsely powdered flowers, which are swallowed with the liquid . It is considered to be an effectual vermifuge for Taenia solium . In its anthelmintic action it is nearly allied to male fern, but it is much inferior to that drug and is very rarely used in Great Britain .