1. Gonocaryum lobbianum (Miers) kurz, J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 39: 72. 1870.
琼榄 qiong lan
Platea lobbiana Miers, Ann. Mag. Nat. Hist., ser. 2, 10: 110. 1852; Gonocaryum maclurei Merrill.
Shrubs or small trees, 1.5-8(-10) m tall. Bark gray; branchlets light olive green to light gray-brown, glabrous. Petiole 1-2 cm, stout; leaf blade shiny, olive green when dry, abaxially slightly light green and adaxially dark green when fresh, narrowly to broadly elliptic, 9-20(-25) × 4-10(-14) cm, leathery, glabrous, midvein abaxially conspicuously prominent, flat, adaxially conspicuous, slightly concave, lateral veins 5 or 6(-9) pairs, abaxially prominent, adaxially slightly prominent, reticulate veins inconspicuous, slender, base broadly cuneate or subrounded to oblique on one side. Plants polygamo-dioecious. Staminate flowers in dense interrupted short spikes, 7-8 mm, with short pedicel; sepals 5, broadly elliptic, ca. 2 mm, valvate, connate only at base, margin ciliate; corolla white, tubular, ca. 6 mm, slightly fleshy, glabrous, with 5 triangular lobes; lobes incurved; stamens 5, on corolla tube, filaments 3-4 mm; anthers ovoid, ca. 1.5 mm; ovary ca. 2.5 mm, pubescent. Pistillate or bisexual flowers few, in racemes on short peduncles; calyx lobes 5, ovate, ca. 2.5 mm, valvate; corolla tubular, ca. 6 mm, 5-lobed, lobes triangular; filaments ca. 4 mm; anthers ca. 0.5 mm; ovary broadly ovoid, glabrous; style hairy; stigma small, 3-lobed. Drupe changing from green to purple-black, ellipsoid to narrowly ellipsoid, 3-4.5(-6) × 1.8-2.5 cm, with longitudinal ribs when dry, apex with a short mucro; exocarp 3-4 mm thick. Fl. Jan-Apr, fr. Mar-Oct.
Dense valley forests; 500-1800 m. Hainan, Yunnan [Cambodia, Indonesia, Laos, Malaysia, Myanmar, Thailand, Vietnam].
This is a rare species. The seed oil is used for making soap and lubricating oil.