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FOC | Family List | FOC Vol. 13 | Flacourtiaceae | Xylosma

3. Xylosma longifolia Clos, Ann. Sci. Nat., Bot., sér. 4. 8: 231. 1857.

长叶柞木 chang ye zuo mu

Xylosma congesta (Loureiro) Merrill var. kwangtungensis F. P. Metcalf; X. racemosa (Siebold & Zuccarini) Miquel var. kwangtungensis (F. P. Metcalf) Rehder.

Shrubs or small trees, evergreen, 4-7 m tall; bark gray-brown; branchlets spiny, glabrous. Stipules not seen; petiole 5-8 mm, glabrous; leaf blade narrowly elliptic, oblong-elliptic, oblong-lanceolate, or narrowly obovate, 4-15(-20) × (2-)2.5-5(-7 cm), leathery, both surfaces glabrous, lateral veins (6 or)7-11 pairs, raised on both surfaces, base acute, cuneate, very rarely obtuse, margin serrate, apex acuminate, acumen 1-2 cm. Inflorescence of short racemes or reduced panicles borne singly or in condensed clusters in leaf axils; rachis 0.5-2 cm, glabrous or puberulous; bracts ovate (staminate flowers) to lanceolate (pistillate flowers), small, 0.5-1 mm, glabrous or sparsely puberulous. Flowers greenish, 2.5-3.5 mm in diam. Pedicels 1-2 mm, slender, puberulous. Sepals 4 or 5, persistent, ovate or lanceolate, 1-2 mm, abaxially glabrous or sparsely puberulous with spreading hairs, adaxially glabrous, margin entire to erose (× 10 mag.), glabrous. Staminate flowers: stamen filaments eventually ca. 3 mm; anthers ellipsoid, minute, ca. 0.3 mm; disk glands small, ± connate. Pistillate flowers: disk annular or few lobed, ovary ovoid, ca. 2 mm; placentas 2 or 3, each with 2 or 3 ovules; styles 2 or 3, very short, 0.5-0.8 mm or less, partly or completely joined. Berry reported as red when ripe, drying black, globose, 4-6 mm in diam.; calyx, disk, and style persistent. Seeds 4 or 5, brown when dried, ca. 4 mm, ovoid, flattened on one or more sides by mutual compression, completely enclosed in a thin sheath, sheath without dark streaks. Fl. Apr-May, fr. Jun-Oct.

Mountain forests; 1000-1600 m. Fujian, Guangdong, Guangxi, Guizhou, Hainan, Yunnan [India, Laos, Nepal, Thailand, Vietnam].

"Xylosma fascicuflorum" [sic] (S. S. Lai, Bull. Bot. Res., Harbin 14: 224. 1994) belongs here but was not validly published under Art. 37.2 of the Vienna Code because two gatherings were indicated as types (B. Y. Qiu 50405 and M. G. Li [M. K. Li] 697).


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