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

18. Lasianthus hookeri C. B. Clarke ex J. D. Hooker, Fl. Brit. India. 3: 184. 1880.

虎克粗叶木 hu ke cu ye mu

Shrubs, up to 5 m tall; branches and branchlets densely appressed pubescent to sericeous. Petiole 5-10 mm, appressed puberulent to strigose or sericeous; leaf blade papery or subleathery, oblong, 12-24 × 3-6 cm, glabrous adaxially, puberulent or ciliate on nerves and margins abaxially, base obtuse or cuneate, apex caudate-acuminate; lateral veins 6-8 pairs, outermost pair extending to tip of leaf; nervules subparallel, conspicuously elevated abaxially; stipules generally persistent, triangular to broadly triangular, 2-3 mm, appressed puberulent to strigose or sericeous. Inflorescences glomerulate, sessile; bracts absent or few, linear, 3-4 mm. Flowers sessile. Calyx subglabrous to puberulent; hypanthium campanulate, 1.5-2 mm; limb lobed for 1/2-3/4; lobes 4-6, lanceolate to narrowly triangular, 1-2 mm. Corolla 6-7 mm, puberulent outside; tube 4-5 mm; lobes 4-6, ovate-lanceolate, ca. 2 mm. Fruit subglobose, 4-5 mm in diam., glabrous or puberulent, smooth; pyrenes 5.

Forests, shaded and wet places; 300-1500 m. Guangxi, Guizhou, Xizang, Yunnan [NE India, Myanmar, Thailand, Vietnam].

1 Leaf margins densely ciliate; bracts subulate; calyx limb plus hypanthium ca. 2 mm, with minute subulate teeth.   18a var. dunnianus
+ Leaf margins sparsely ciliate; bracts absent; calyx limb plus hypanthium ca. 3 mm, with lanceolate, ca. 1 mm lobes.   18b var. hookeri

Lower Taxa


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