Tanghinia. Ordeal bean of Madagascar. Tanghinia venenifera.
Tanghinia. Ordeal Bean of Madagascar.—Tanghinia venenifera Poir. (Cerbera Tanghin Hook.) (fam. Apocynaceae), has been investigated, and, according to C. E. Quinquaud, is both a respiratory and a cardiac poison. (C. R. A. S., cl, 534; see also T. G., vol. ii, 610.) The active principle, tanghinin, occurs in colorless lustrous scales, efflorescing in the air, having a bitter and sharp taste, soluble in alcohol, ether, and acetic acid.