波叶海桐 bo ye hai tong

Trees small, ca. 6 m tall. Bark black-brown. Young branchlets brown after drying, stout, glabrous; old branchlets numerous lenticellate. Leaves usually 4–6-clustered at branchlet apex; petiole 1.5–2 cm, compressed; leaf blade gray-green abaxially, dark green and shiny adaxially, oblong-oblanceolate, 9–15 × 2–4 cm, leathery, glabrous abaxially, lateral veins 12–14-paired, prominent on both surfaces after drying, reticulate veins slightly convex abaxially, indistinct adaxially, base cuneate, margin reflexed after drying, sinuolate-rugose, apex acute or acuminate. Inflorescences compoundly corymbose, with 2–5 corymbs; primary peduncle 2–2.5 cm, secondary ones 6–8 mm; pedicels 4–6 mm, puberulous. Sepals ovate, 1–1.5 mm, margin ciliate. Petals ca. 7 mm, apex reflexed. Filaments ca. 5 mm; anthers ca. 1 mm. Ovary pubescent; carpels 2; placentas 2, parietal; ovules ca. 12; stipe very short. Capsule compressed broadly ovoid, 8–9 mm in diam., dehiscing by 2 valves; pericarp thin, horizontally striate adaxially. Seeds 6–8, ca. 3 mm; funicle ca. 1 mm. Fl. Mar–May, fr. Jun–Oct.

Forests, thickets; 1000--1600 m. SW Guizhou (Anlong Bouyeizu Miaozu Zizhixian), C and S Sichuan.