兰屿山柑 lan yu shan gan

Shrubs, scandent or trailing, ca. 1.5 m tall. Twigs mostly hanging, not squamate, with appressed trichomes, often with recurved stipular spines to 7 mm. Petiole 7-11 mm; leaf blade oblong, 4-8[-15] × 2-4[-6] cm, subleathery, glabrous but abaxially often slightly yellowish brown pubescent, secondary veins 6-10 on each side of midvein, base rounded to rarely nearly cordate, margin ± revolute, apex acuminate to rarely rounded or emarginate but often with an acute mucronulate tip. Inflorescences mostly axillary and sometimes terminal, umbellate, 6-9-flowered. Pedicel 2.5-3.5 cm, glabrous, base with a pair of ca. 2-mm spines or spineless. Sepals (5-)6-7 × ca. 5 mm, glabrous, margin membranous; sepals of outer whorl herbaceous; sepals of inner whorl flat, thinner, distinct while in bud, margin rarely with small cilia. Petals white [yellowish white, pink, or red, rarely tinged with pale green outside], obovate, 8-11 × 4-6 mm, base with many trichomes. Stamens 20(-40); filaments 2-3 cm; anthers ca. 1 mm. Gynophore 2-3[-4.5] cm; ovary ellipsoid, 1-2 mm, glabrous; placentae 3 or 4. Fruit pale bluish black, subglobose to globose, 1-1.2 × 1-1.2 cm. Seeds 3 or more per fruit, 8-12 × 5-12 mm. Fl. Jun-Jul, fr. from at least Jul.

Thickets and trailsides, stony soils; sea level to 300 m. Hainan, Taiwan (Lan Yu) [Indonesia, New Guinea, Philippines; SW Pacific islands].