Japan Flora: Tree with nearly glabrous branches and branched spines; leaves 10-25 cm. long, simply or twice pinnate, short-pubescent on the rachis, the leaflets 12-24 on each pinna, oblique, narrowly ovate, 15-35 mm. long, 8-15 mm. wide, obtuse, entire or undulate-serrate, upper margin slightly dilated at base, nearly or quite gla­brous, with raised veinlets beneath, green and slightly lustrous above, yellowish green beneath; spikes 6-8 cm. long, densely flowered, from the short leafy shoots; flowers yeDowish, 3-4 mm. across, nearly sessile; calyx slighdy pubescent, the lobes oblong, slightly shorter than the tube; petals yellowish, elliptic, puberulous; stamens short-exserted; legumes 20-25 cm. long, 3- 3.5 cm. wide, pendulous, slightly arcuate, on a stipe about 2.5 cm. long.  May-June.

Honshu (centr. distr. and westw.), Shikoku, Kyushu.