Japan Flora: Deciduous tree; leaves 20-30 cm. long, the petioles short, slightly short-pubescent, the leaflets 8-13, ovate-oblong, 5-10 cm. long, 2-4 cm. wide, acute to acuminate, slightly dilated on the upper margin at base, puberalous on the midrib above, slightly appressed-pubescent beneath; pani­cles 15-25 cm. long, the separate branches in racemes; flowers about 15 mm. long, the pedicels and calyx appressed brown- pubescent, the bracteoles minute on the middle portion of the pedicel; calyx 4-5 mm. long, with depressed semirounded teeth; legumes much compressed, short-stiped, broadly linear, 7-8 cm. long, 15-17 mm. wide inclusive of the narrow wings, 2- to 3-seeded, glabrous or nearly so.---June-July. Moun­tains.

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