(ak-o-kan-the' -ra) [aKcofd), a point; avdypoc, blooming]. A genus of plants of the order Apocynacece. A. abyssinica yields an African arrow-poison, mshangu, secured from a decoction of the branches, the toxic property being due to a crystalline glucosid, C 29 H 46 3 . A. defter sii and A. schimperi are used as arrow-poisons in Africa. The poison- ous principles are crystalline glucosids. A.
venenata is a species indigenous to southern Africa; a decoction of the bark is used by the natives to poison arrows. The poisonous principle is a glucosid, acocantherin, similar to or identical with ouabain.