Widely spreading, soft-wooded tree to 10 m; lvs 2-5 dm; pinnae 4-12 pairs, 1-2 dm; lfls 20-30 pairs, oblong, 10-15 mm, mucronate, very inequilateral; fls pink, in long-peduncled heads forming a terminal raceme; cal 2-2.5 mm; cor 5-8 mm; stamens 15 mm; fr 10-15 נ2 cm; 2n=36. Native of tropical Asia, hardy as far n. as s. N.Y., and often escaped from cult. southward. June-Aug.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.