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

1. Pterostyrax corymbosus Siebold & Zuccarini, Fl. Jap. 1: 96. 1839.

小叶白辛树 xiao ye bai xin shu

Halesia corymbosa (Siebold & Zuccarini) G. Nicholson.

Trees to 15 m tall. Trunk to 45 cm d.b.h. Branchlets densely stellate pubescent, soon glabrescent. Petiole 1--2 cm; leaf blade obovate, broadly obovate, or elliptic, 6--14 X 3.5--8 cm, papery, stellate pubescent when young, abaxially usually very densely pubescent, adaxially glabrescent, base cuneate, margin serrulate to sparsely glandular dentate, apex acute to abruptly acuminate, secondary veins 7--9 pairs, tertiary veins reticulate. Panicles corymbose, 3--8 cm. Pedicel 1--2 mm. Flowers ca. 1 cm. Calyx ca. 3 mm; teeth lanceolate, ca. 2 mm. Corolla lobes oblong, ca. 10 X 3.5 mm, apex acute. Stamens longer than corolla; filaments white stellate pubescent. Fruit obovoid, 1.2--2.2 cm, 5-winged, densely stellate tomentose, apex with a 2--4 mm conical rostrum. Fl. Mar-Apr, fr. May-Sep.

Damp shaded areas along streams in forests; 400--1600 m. N Fujian, N Guangdong, Hunan, Jiangsu, Jiangxi, NW Zhejiang [Japan].


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