Japan Flora: Rhizomes short-creeping, with rather thick firm roots from the nodes; stems 25-40 cm. long, 3- to 5- leaved, white-hirsute; leaves alternate, oblong-elliptic, 10-20 cm. long, 5-8 cm. wide, abruptly acuminate, shortly sheathed at base, many-nerved, plicate; flowers rose to rose-purple, rarely white, 4-6 cm. across; dorsal sepal ovate, acuminate, 4-5 cm. long, the lateral sepals wholly connate; petals narrowly ovate, acuminate, crisped-pubescent inside at base. May-
July. Grassy mountain slopes;

Hokkaido, Honshu; rather rare. Korea, Manchuria, n. China, Kamchatka, Siberia, and e. Europe.

f. albiflorum (Makino) Ohwi. Flowers white; rare.
f. rebunense (Kudo) Ohwi. Flowers pale yellow; rare.