Japan Flora: Resembles the S. incisa, the branches slightly stouter, flexuous, glabrous; leaves shallowly 3- to 5-lobed, with incised acute teeth, glabrous on upper side, slightly pubescent on nerves beneath, 5-9 cm. long, 3.5-6 cm. wide, caudate-acuminate at apex, the petioles 10-15 mm. long, slighdy pubescent; stipules 5-12 mm. long; inflorescence glabrous, 4-10 cm. long, flowers slightly larger than in S, incisa. May-June. Mountains.
Honshu (Kinki, Tokaido, and Kanto Distr., and Ugo Prov.); rare.