Japan Flora: Sparsely branched small epiphytic shrub with rather stout steins and branches; leaves orbicular, 3-5 cm. in diameter, cordate, shallowly 3- to 5-lobulate, toothed, short- pubescent, sometimes glabrescent above, the petioles 1-3 cm. long, short-pubescent; flowers 1 or 2, the pedicels 5-10 mm. long, with 2 small deciduous bracteoles near the top; ovary with long brownish red glandular hairs; calyx-lobes oblong, the limb short; berry broadly ellipsoidal, 10-12 mm. long. Apr.-May. Epiphytic on tree-trunks and branches in mountains;

Honshu, Shikoku, Kyushu; rather rare.

Var. glabrum Ohwi. Leaves and petioles glabrous. Kyushu (Mount Gozendake in Chikugo Prov.).