闭花木 bi hua mu

Leiopyxis sumatrana Miquel, Fl. Ned. Ind., Eerste Bijv. 446. 1861; Cleistanthus saichikii Merrill; Kaluhaburunghos sumatranus (Miquel) Kuntze; Paracleisthus subgracilis Gagnepain.

Evergreen trees up to 18 m tall, to 40 cm d.b.h.; bark red-brown, smooth; plants glabrous except for sparsely pubescent young branches and juvenile fruits and densely hirsute ovary. Stipules ovate-triangular, ca. 0.5 mm, often caducous; petiole 2-7 mm; leaf blade ovate or elliptic, 3-10(-15) × 2-5(-7) cm, papery or stiffly papery, abaxially glaucous or dull, base obtuse to rounded, apex caudate; lateral veins (4 or)5-7(-8) pairs, slightly obscure. Flowers in axillary few-flowered fascicles (up to ca. 7), subtended by normal leaves, or on smaller-leaved or spikelike leafless axes; bracts triangular. Male flowers: sepals 5, ovate-lanceolate, ca. 2 mm; petals 5, obovate, ca. 0.8 mm; disk annular; rudimentary ovary 3-angled. Female flowers: sepals 5, ovate-lanceolate, 2-3 mm; petals 5, obovate, ca. 1 mm; disk cylindric, nearly as long as ovary; ovary ovoid to globose; styles 3, bifid. Capsules red, ovoid-trigonous, ca. 1 × 1 cm; carpodermis thin, 3-valved when mature. Seeds usually 1, subglobose to ovoid, up to 6 mm. Fl. Mar-Aug, fr. Apr-Oct.

Dense deciduous or evergreen forests; sea level to 500(-700) m. Guangdong, Guangxi, Hainan, Yunnan [Brunei, Cambodia, Indonesia, Malaysia, Philippines, Singapore, Thailand, Vietnam].