Japan Flora: Brown-strigose, semi-evergreen, much-branched shrub 1-2 m. high; leaves rather thin, dimorphic, the vernal ones lanceolate or narrowly oblong, 15-3 cm. long, 5-8 mm. wide, acute at both ends, short-petiolate, the summer leaves persistent, oblanceolate or broadly linear, 1-3 cm. long, 2-4 mm. wide, abruptly acute; flowers 2-3, rose-purple, in umbels, the pedicels 3-7 mm. long; calyx-lobes 5, ovate-orbicular, 1-1.5 mm. long; corolla infundibuliform, 2-3 cm. across, 5-lobed, glabrous; stamens 5, the filaments loosely white granular-pilose; style glabrous, 2-2.5 cm. long, longer than the stamens; capsules narrowly ovoid, 5-7 mm. long. Apr.-May.

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