Japan Flora: Gla­brous, evergreen, scandent shrub, the branches terete, with a pulvinuslike leaf-scar on each side of the node; leaves narrowly oblong to broadly oblanceolate, rarely lanceolate, 7-12 cm. long, 1.5-3.5 cm. wide, acuminate, subobtuse at base, deep green and lustrous, entire, the petioles 7-10 mm. long; in­florescence trichotomously 3- to 10-flowered, the peduncle 1-2 cm. long, the bracts small; calyx-lobes semirounded, ciliolate, about 0.6 mm. long; corolla about 12 mm. across, yellow, 5- parted nearly to the base, the lobes glabrous inside, linear- oblong, spreading, obtuse; anthers glabrous, narrowly ob­long, 2.5-3 mm. long, about half as long as the corolla-lobes. June.

Honshu (Chugoku Distr.).  China.