山椤 shan luo

Nemedra elaeagnoidea A. Jussieu, Bull. Sci. Nat. Géol. 23: 239. 1832; Aglaia abbreviata C. Y. Wu; A. elaeagnoidea var. formosana Hayata; A. elaeagnoidea var. pallens Merrill; A. formosana (Hayata) Hayata; A. roxburghiana (Wight & Arnott) Miquel; Milnea roxburghiana Wight & Arnott.

Trees 1.5-15 m tall, to 30 cm d.b.h., evergreen. Bark greenish white or russet, thin, exfoliating. Young branches, petioles, rachises, and inflorescences covered with scalelike stellate rust-colored trichomes, densely brown squamate and glabrescent, or densely silvery to yellowish stellate squamate. Leaves alternate to subopposite, 10-20 cm; petiole and rachis 3-10 cm, brown squamate, covered with scalelike stellate rust-colored trichomes when young but glabrescent; leaflets (1 or)3-7, opposite to subopposite; petiolules 2-13 mm, brown squamate; leaflet blades obovate, elliptic, or oblong-elliptic, (3-)6-12(-16) × (1.5-)2.5-5.5 cm, thinly papery to leathery, both surfaces glabrous or abaxially densely yellowish squamate and adaxially densely silvery squamate but abaxially sparsely lepidote along midvein, abaxially greenish yellow when dry, adaxially lustrous, midvein abaxially prominent and adaxially slightly prominent, secondary veins 5-10 on each side of midvein, slender, and abaxially ± prominent, base cuneate to broadly cuneate and ± oblique, margin entire, apex acuminate, obtuse, or rounded. Thyrses axillary, as long as or slightly shorter than leaves, lax, covered with rust-colored or yellowish scalelike stellate trichomes or densely russet squamate. Flowers ca. 2.5 mm in diam. Pedicel ± as long as flower, covered with scalelike stellate rust-colored trichomes. Calyx ca. 0.6 mm, 5-lobed; lobes rounded, outside rust-colored or yellowish lepidote. Petals 5, oblong, 1-1.5 mm, glabrous or outside yellowish lepidote, apex rounded. Staminal tube subglobose, slightly shorter than petals, apical margin entire, undulate, or 5-lobed; anthers 5, included. Ovary ovoid, densely covered with scalelike stellate trichomes; stigma sessile. Infructescences axillary, 1-3 cm, usually with 1(-3) fruit, brown squamate; bractlets conical. Fruit indehiscent, yellowish brown when mature, subglobose, ellipsoid, or obovoid, 1-1.4 cm in diam.; persistent calyx 5-crenate, crenations triangular, brown squamate. Seeds 1(or 2) per fruit. Fl. Jun-Oct, fr. Jul-Dec.

Dense and moist forests in valleys and mountainous regions, ravine rain forests, evergreen broad-leaved forests; near sea level to 1500 m. Guangdong, Guangxi, Guizhou, Hainan, S Taiwan (Hengchun peninsula), Yunnan [Cambodia, India, Indonesia, Laos, Malaysia, Papua New Guinea, Philippines, Sri Lanka, Thailand, Vietnam; Australia, Pacific islands].