Bot. [mod.L. (Linnæus, 1735), f. mod.L. triandr-us, f. Gr. τρεῖς three + ἀνήρ, ἀνδρ- man, male, taken as = stamen: see -ANDROUS.] The third class in the Linnæan Sexual System, comprising plants having hermaphrodite flowers with three stamens not cohering; also an order in some classes, comprising plants with three stamens. So Triander (rare), a triandrous plant; Triandrian, Triandrious, and (usually) Triandrous adjs., having three stamens; belonging to the class (or order) Triandria.
1828. Webster, *Triander.
1748. Linnæus, Hortus Upsaliensis Classis, iii. 13. *Triandria.
1760. J. Lee, Introd. Bot., II. xxiii. (1788), 139. of the twentieth Class, Gynandria … Order II, Triandria, comprehending such Plants as have three Stamina.
1828. Webster, *Triandrian.
1786. Abercrombie, Gard. Assist., Arrangem., 35. Willow tree … Common white leaved…. *Triandrious, white barked.
1830. Lindley, Nat. Syst. Bot., 261. [Irideæ] differ from Amaryllideæ … in being *triandrous.
1870. Hooker, Stud. Flora, 430. Hierochloe … Holy Grass, upper flower 2-sexual 2-androus; 2 lower male, 3-androus.
