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Project Name Data (Last Modified On 11/16/2012)

Flora Data (Last Modified On 11/16/2012)
Genus LEUCAENA Benth.
PlaceOfPublication Hook. Jour. Bot. 4:416. 1842.
Synonym Ryncholeucaena Britt. & Rose, in N. Am. Fl. 23:130. 1928. Caudoleucaena Britt. & Rose, loc. cit. 1928.
Description Unarmed shrubs or trees, glabrous or pubescent. Leaves bipinnate, the pinnae few or several pairs opposite on the rachis, the leaflets few and large or many and small; petiole evident, usually glandular; rachis pronounced, glandular or egland- ular; pinnular rachis often gland-bearing; leaflets linear to ovate, pubescent or glabrous, usually dull. Inflorescence of axillary or racemose pedunculate heads; peduncles usually stout, solitary or fasciculate, ebracteate except at the base of the head; head globular, dense, the floral bractlets evident, usually peltate. Flowers valvate, white; calyx subcampanulate, markedly sympetalous but 5-toothed, usually pubescent apically; corolla off 5 narrow, essentially free petals; stamens 10, free, exserted, the anthers relatively large, pubescent or glabrous; ovary stipitate, gla- brous or pubescent, inequilateral (bilaterally symmetrical), multiovulate; style thicker than the filaments, gradually expanded into an obliquely truncate stigma. Legume linear to oblong, straight, flat, thin, dehiscent from both margins, the seeds usually nearly transverse.
Habit shrubs trees
Distribution Chiefly New World tropics and subtropics; a few species described from the Far East, and some introduced into various parts of the world.
Note This comparatively small genus, a well recognized segregate of Acacia, super- ficially resembles Albizzia. The flowers, however are very different from those of Albizzia, and afford the diagnostic criteria for the genus. Only two species are known from Panama.
Key a. Leaflets small, sublinear, 8-15 mm. long, about 15 pairs per pinna - 1. L. GLAUCA aa. Leaflets larger, nearly ovate, 15-40 mm. long, about 4 pairs per pinna_ 2. L. MULTICAPITULA
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