山油柑 shan you gan

Jambolifera pedunculata Linnaeus, Sp. Pl. 1: 349. 1753; Acronychia apiculata Miquel; A. arborea Blume; A. barberi Gamble; A. elliptica Merrill & L. M. Perry; A. laurifolia Blume; Clausena simplicifolia Dalzell; Cyminosma pedunculata (Linnaeus) Candolle; Gela lanceolata Loureiro; J. arborea (Blume) Zollinger & Moritzi; J. rezinosa Loureiro; Laxmannia ankenda (Gaertner) Raeuschel; Melicope conferta Blanco; Selas lanceolatum (Loureiro) Sprengel; Ximenia lanceolata (Loureiro) Candolle.

Shrubs or small to large trees, to 28 m tall. Petiole glabrous to finely pubescent, 0.5-5 cm; leaflet blades usually elliptic to elliptic-oblong but grading to obovate, oblanceolate, or nearly oblong, 3.5-24.5 × 2-8.5 cm, base cuneate or sometimes rounded or attenuate, apex obtusely acuminate with an acumen to 2 cm or sometimes obtuse or rounded. Inflorescences 2-25 cm, few to many flowered. Pedicel 2-12 mm. Sepals 0.6-1.5 mm. Petals 4-12 mm. Ovary completely pubescent or rarely pubescent only at apex, with or without apical septicidal fissures; style pubescent at base, otherwise glabrous. Fruit subglobose or sometimes grading to ellipsoid, pyriform, or broadly conic, 0.5-1.5 cm in diam., with or without apical septicidal fissures, usually ± sparsely pubescent with ring of dense appressed trichomes at base but grading to tomentose or glabrous, apex often apiculate; outer part of pericarp (exocarp and mesocarp) drying 0.5-3 mm thick; mesocarp woody or subwoody. Seeds reddish black to black, 3-7 mm. Fl. Apr-Aug, fr. Aug-Dec.

Secondary forests, woods or thickets on lower hills; near sea level to 900 m. Fujian, Guangdong, Guangxi, Hainan, Taiwan, Yunnan [Bangladesh, Bhutan, Cambodia, India, Indonesia, Laos, Malaysia, Myanmar, New Guinea, Philippines, Sri Lanka, Thailand, Vietnam].

Acronychia pedunculata is the dominant in some plant communities.