Japan Flora: Evergreen shrub 1-3 m. high, the young branchlets sometimes soft brown- pubescent; leaves somewhat coriaceous, narrowly oblong, 6-15 cm. long, 2-5 cm. wide, obtuse to rounded, mucronate, rounded to shallowly cordate at base, entire, slightly recurved on margins, glabrous, deep green on upper side, paler beneath, the petioles often reddish, 1-1.5 cm. long; inflorescence 5- to 15-flowered, on a very short axis, the pedicels brown-pubescent, the bracts and bud-scales deciduous; calyx very small; corolla white or pinkish, pale green spotted on inside of upper lobe, glabrous, infundibuliform, 3-4 cm. across; stamens 10, the filaments loosely white-puberulent on lower half; ovary rusty- pubescent; style 1-1.5 cm. long, glabrous, ascending; psules short-cylindric, becoming glabrous at maturity, 1-1.7 cm. long, 5- 6 mm. in diameter. June-July. Coniferous woods in mountains;

Hokkaido, Honshu (centr. and n. distr.).
f. nemotoanum Makino. Stamens petaloid. Honshu.
Var. roseum Koidz. Leaves beneath with dense, short, pale brown hairs. Occurs with the typical phase.