Japan Flora: Nearly glabrous shrub with elon­gate branching stems with rather flat prickles; stipules mem­branous, entire, slightly glandular on margin, the free portion short, filiform; leaflets 5, sometimes 7, rather thin, slightly lustrous on upper side, paler beneath, the terminal ones ovate to narrowly so, 2-4 cm. long, 1-2 cm. wide, acuminate to long-acuminate, the lateral ones acute to acuminate, the lowest pair often smaller; inflorescence a corymb, usually eglandular, the pedicels 6~10 mm. long; flowers few, 2-3 cm. across, usually white.  May-June. Thickets in low mountains. 

Honshu (Kanto and Tokaido Distr.).

var. onoei (Makino) Momiyama. the leaflets beneath and leaf-rachis pubescent.  Honshu (centr. distr. and westw.)，Shikoku, Kyushu.

var. hakonensis Fr. & Savat. Leaflets thin, glabrous, whitish beneath, the terminal ones ovate to broadly so, acute to abruptly acuminate; flowers 1 or 2. May-June. Honshu (Kanto Distr. and westw.)，Shi­koku, Kyushu.

var. fujisanensis Makino. Leaflets (5-)7, paler beneath, glabrous or nearly so, the lateral ones slightly smaller, the terminal one  subcoriaceous, ovate to elliptic-ovate, 1.5-25 cm. long, 1-1.5 cm. wide, acute or subacute; flowers few. June-July. Honshu (Sagami, Suruga, and Kai Provs. and westw.), Shi­koku.

var. paniculigera (Makino) Momiyama. Stipules nearly entire, glandular on margin, membranous, the free portion broadly lanceolate, acuminate; leaflets 5-9, nearly equal, 1-2.5 cm. long, 7-15 mm. wide, slightly or scarcely lustrous above, glabrous, whitish beneath, the terminal ones elliptic to obovate-elliptic or oblong-ovate, obtuse to abruptly acuminate, the lateral ones obtuse to rounded; inflorescence usually panicled, glabrous or more often glandular-pilose, few- to many-flowered; flowers white, 1-3 cm. across.  May-June. Honshu (centr. distr. and westw.), Shikoku, Kyushu.