Japan Flora: Erect branching shrub with prickles on the spreading rather stout usually glabrous branches and petioles; stipules green, membranous, short-pubescent and glandular- pilose, the free portion filiform at apex; leaflets 5-7, rather membranous, ovate, obovate or oblong, green, 2-4 cm. long, obtuse to acute, dull, nearly glabrous on upper side, paler and usually with short soft pubescence beneath, the petioles short- pubescent; panicles many-flowered, erect; flowers white, 2-3 cm. across, the pedkels often with short stipitate glands.  May-June.

Hokkaido, Honshu, Shikoku; common.

var. adenochaeta (Koidz.) Ohwi. Leaflets large, 3-7 cm. long, subcoriaceous, less prominently pubescent beneath; inflorescence with prominent stipitate glands 1-2 mm. long; flowers rose, 3-4 cm. across. Kyushu (Higo, Satsuma, and Hyuga Prov.).