窄叶石楠 zhai ye shi nan

Shrubs evergreen, 1–2 m tall. Branchlets brownish to reddish brown when young, grayish brown when old, initially slightly pilose, glabrate, with sparse, orbicular lenticels; buds small; scales ± subulate, glabrous. Petiole 4–10 mm, broad, grooved, initially pilose, glabrescent; stipules caducous, brownish, subulate or linear-subulate, 4–7 mm, glabrous; leaf blade lorate-lanceolate or oblong-lanceolate, 3.5–9 × 1–3 cm, leathery, veins 18–20 pairs, midvein raised abaxially, both surfaces glabrous, basally gradually attenuate, margin slightly revolute, crenate, apex acute or obtuse and mucronate. Compound corymbs terminal, 3–4 cm in diam., 15–25-flowered; rachis and pedicels glabrous. Pedicel 5–10 mm. Hypanthium cupular, 1.5–2 mm, abaxially glabrous. Sepals triangular, 1–2 mm, apex acute. Petals white, 2–3 mm, adaxially white pilose, apex emarginate. Stamens 20, ca. as long as petals. Ovary pilose apically; styles 2, connate, only free near apex, not exceeding stamens. Fruit red, ovoid, 5–7 × 3–5 mm, fleshy, glabrous, smooth, 4-seeded; sepals incurved. Fl. Apr–May, fr. Jul–Aug.

Near water courses in mountain valleys, thickets alongside rivers; 200--400 m. Guangxi, Guizhou [Thailand].