黄花双六道木 huang hua shuang liu dao mu

Abelia serrata Siebold & Zuccarini, Fl. Jap. 1: 76. 1835.

Shrubs, deciduous, to 3 m tall. Branches pubescent. Leaf blade ovate, ca. 5 × 2.5 cm, both surfaces sparsely pubescent, more densely so on veins, base cuneate, margin entire or remotely serrate, ciliate, apex acute to acuminate. Flowers paired, terminal; ovaries with 6 bracts at base; peduncle 2-3 mm; bracts lanceolate, 2-3 mm. Calyx of usually 2 oblong sepals, ca. 10 × 6 mm, apex sometimes lobed. Corolla bilabiate, yellow or yellow-green, with orange markings on lower lip; tube ca. 18 mm, inside villous. Stamens 4, didynamous, partially adnate to corolla tube, slightly exserted. Ovary 8-10 mm, pubescent; style filiform, slightly exceeding stamens; stigmas capitate. Achene crowned with usually 2 slightly accrescent sepals. Fl. May, fr. Sep.

Forests; ca. 900 m. Zhejiang (Yongjia) [Japan].