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FOC | Family List | FOC Vol. 15 | Styracaceae | Styrax

3. Styrax tonkinensis (Pierre) Craib ex Hartwich, Apotheker-Zeitung. 28: 698. 1913.

越南安息香 yue nan an xi xiang

Anthostyrax tonkinensis Pierre, Fl. Forest. Cochinch. 4: t. 260. 1892; Styrax hypoglaucus Perkins; S. macrothyrsus Perkins; S. subniveus Merrill & Chun.

Trees 6--30 m tall. Trunk 8--60 cm d.b.h., bark dark gray, irregularly divided. Branchlets stellate tomentose, glabrescent. Leaves alternate; petiole 0.5--1.5 cm; leaf blade elliptic to ovate, 5--18 X 4--10 cm, papery to leathery, abaxially densely gray to glaucous stellate pubescent, adaxially glabrous except for veins, base rounded to cuneate, margin entire or apically serrate, apex shortly acuminate, secondary veins 5 or 6 pairs, tertiary veins subparallel. Racemes or panicles 3--10 cm. Pedicel 5--10 mm. Flowers 1.2--2.5 cm. Calyx cup-shaped, 3--5 mm, truncate to 5-toothed. Corolla tube 3--4 mm; lobes ovate-lanceolate, 10--16 X 3--4 mm, membranous. Filaments sparsely white stellate pubescent; anthers narrowly oblong. Style ca. 1.5 cm, glabrous. Fruit subglobose, 1--1.2 cm in diam., densely gray stellate tomentose, apex apiculate to obtuse. Seeds chestnut brown, ovoid, densely tuberculate, stellate tomentose and pubescent. Fl. May-Jun, fr. Aug-Oct.

Mixed forests; 100--2000 m. Fujian, Guangdong, Guangxi, Guizhou, Hunan, Jiangxi, Yunnan [Cambodia, Laos, Thailand, Vietnam].


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