Japan Flora: Much-branched deciduous small shrub, the branches, leaves, and capsules purple-brown strigose; leaves alternate, mostly clustered toward the tip of the branchlets, broadly lanceolate, 8-15 (-20) nun. long, 3-6 mm. wide, obtuse to acute, narrowed at base, glabrous beneath except the strigose midrib, strigose on the upper surface, the petioles to 2 mm. long; flowers solitary, red to nearly white, terminal, the pedicels 2-3 mm. long; calyx 5-toothed; corolla about 1.5 cm. across, infundibuliform, glabrous; stamens 5, the filaments granular-pilose in the lower part; styles glabrous, 1.5-2 cm. long, long-exserted; capsules short-pedicelled, ovoid, about 4 mm. in diameter. Apr.- May. Mountains;

Honshu (Kanto Distr. and westw.), Shikoku, Kyushu