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FOC | Family List | FOC Vol. 19 | Rubiaceae | Lasianthus

14. Lasianthus formosensis Matsumura, Bot. Mag. (Tokyo). 15: 17. 1901.

台湾粗叶木 tai wan cu ye mu

Lasianthus kwangsiensis Merrill ex H. L. Li; L. tashiroi Matsumura var. pubescens Matsumura; L. tenuicaudatus Merrill.

Shrubs, 1-2 m tall; branches and branchlets densely villous or villosulous. Petiole 5-8 mm, villous to villosulous; leaf blade papery or subleathery, oblong or ovate-elliptic, 7-12 × 2.5-5 cm, glabrous adaxially, villous or villosulous at least on veins abaxially, base acute or obtuse, apex acuminate or cuspidate-acuminate; lateral veins 6 or 7 pairs; nervules subparallel, slightly elevated abaxially; stipules generally persistent, triangular, ca. 2 mm, villous to villosulous. Inflorescences glomerulate to congested-cymose, sessile to shortly pedunculate; bracts absent. Flowers sessile. Calyx pilosulous to villosulous; hypanthium obconic to campanulate, ca. 1 mm; limb 3-4 mm, deeply lobed; lobes 5, linear-lanceolate. Corolla 6-8 mm, villous outside, tomentose inside; lobes 5, oblong-lanceolate. Fruit ovoid-globose, ca. 5 mm in diam., subglabrous; pyrenes 5. Fl. Oct-Dec, fr. Apr.

Forests, shaded and wet places; 500-1000 m. Guangdong, Guangxi, Hainan, Taiwan, Yunnan [Japan (Kyushu, Ryukyu Islands, Yakushima), Thailand, Vietnam].


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