Trees, unarmed, strigulose. Stems with straight bole, young growth white-puberulent to tomentose, resting buds present, ferruginous or yellowish. Leaves alternate, even-bipinnate, not sensitive to touch; stipules present, not spinescent; rachis and pinnae with extrafloral nectaries; petiolate; pinnae 6–10 pairs, opposite, terminal pair heteromorphic; leaflets 12–24, opposite, blade margins entire, surfaces slightly pubescent abaxially, glabrous adaxially. Inflorescences 12–25-flowered, axillary or terminal, umbels [corymbs]; bracts present. Flowers mimosoid, actinomorphic, dimorphic, 7 or 8-merous, peripheral flowers smaller than central; calyx campanulate, lobes 5–8, calyx and corolla connate, valvate; corolla white and pink; stamens 40+, connate into a tube; anthers dorsifixed, eglandular. Fruits legumes, sessile, glossy red-brown, turgid, straight or slightly curved, oblong, indehiscent, fleshy, pulpy, glabrescent, margins thickened; exocarp separating from mesocarp when old, endocarp woody with septae between seeds. Seeds 8–20, elliptic, strongly biconvex; pleurogram present, aril and endosperm absent; cotyledons large, radicle curved. x = 13.

Distribution

Introduced; Florida, Central America, South America, introduced also in tropical and subtropical areas nearly worldwide.

Discussion

Species 3 (1 in the flora).

Selected References

None.

Lower Taxa

Samanea saman