Japan Flora: Perennial; stems slender, erect, with elongate innovation shoots at the base; leaves oblong to narrowly so, rarely broadly oblanceolate, 2.5-6 cm. long, 1-2 cm. wide, acute, sessile, with callose-based strigose hairs on upper surface, the midrib distinct; flowers in upper axils, 15-18 mm. across; calyx-segments linear-lanceolate, acuminate; corolla blue or rarely white; nutlets smooth, white, 2.5-3 mm. long. Apr.-May. Sunny grassy slopes.

Hokkaido, Honshu, Shikoku, Kyu­shu.