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

2. Lasianthus austrosinensis H. S. Lo, Bot. J. S. China. 2: 4. 1993.

华南粗叶木 hua nan cu ye mu

Shrubs, 1-2 m tall; branches and branchlets densely appressed strigillose. Petiole 3-8 mm, densely strigillose; leaf blade papery, ovate, 5-8 × 2.5-3 cm, glabrous adaxially, appressed strigillose on midrib and nerves abaxially, base obtuse or subrounded, apex shortly cuspidate; lateral veins ca. 5 pairs; nervules subparallel; nerves and nervules elevated abaxially; stipules generally persistent, triangular to broadly triangular, 1-1.5 mm, densely strigillose. Inflorescences glomerulate to subcapitate, sessile; bracts absent. Flowers sessile or subsessile. Calyx densely strigillose; hypanthium portion obconic, ca. 1 mm; limb deeply lobed; lobes 5, oblong to elliptic or oblanceolate, 3-3.5 mm, nerved, obtuse. Corolla ca. 5 mm, densely hirsute outside, villous in upper half inside; lobes 5, triangular. Fruit subglobose, 4-5 mm in diam., strigillose; pyrenes 5.

● Forests, shaded and wet places; 300-500 m. Guangdong, Guangxi, Hainan.

H. Zhu (Syst. & Geogr. Pl. 72: 85. 2002) noted that the relatively well-developed calyx lobes with evident venation are distinctive for this species; the calyx lobes are also distinctive in being widest near the middle rather than at the base as in most other Lasianthus species.


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