Japan Flora: Deciduous small tree with rather slender, glabrous branchlets; leaves rather thin, 10-20 cm. long inclusive of the petioles, (5-)7-foliolate, glabrous or nearly so, the leaflets broadly lanceolate to nar­rowly ovate or oblong, 5-12 cm. long, 2-4 cm. wide, long- acuminate, sessile except the terminal one, acutely toothed, obliquely acute to rounded at base, hairy along the midrib beneath; panicles glabrous; calyx minute or absent; petals 4, free, very narrow, white; samaras narrowly oblanceolate, ob­tuse to retuse, 25-3 cm. long, about 5 mm. wide. Moun­tains

Honshu.