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

8. Tarenna lancilimba W. C. Chen, Acta Phytotax. Sin. 22: 141. 1984.

披针叶乌口树 pi zhen ye wu kou shu

Tarenna attenuata (J. D. Hooker) Hutchinson var. puberula Chun & F. C. How ex W. C. Ko, Fl. Hainan. 3: 584. 1974.

Shrubs or trees, 2-10(-15) m tall; branches slightly compressed, glabrous or mealy pubescent, becoming brown with age. Petiole 0.8-2 cm, glabrous; leaf blade drying thinly leathery, dark brown or yellowish abaxially, lanceolate, elliptic, or obovate-oblong, 5-15 × 1.5-5 cm, both surfaces glabrous, base cuneate then shortly decurrent, apex shortly acuminate; secondary veins 3-5 pairs, without domatia; stipules generally persistent, shortly united around stem, triangular, 1.5-3 mm, glabrous, acute to cuspidate. Inflorescence corymbose, trichotomous, 4-9 × 4-9 cm, many flowered, subglabrous or mealy pubescent, subsessile; bracts triangular, 0.5-1.5 mm, ciliate; pedicels 3-6 mm. Flowers pedicellate. Calyx glabrous or puberulent; hypanthium portion cupuliform, 1-1.5 mm; limb 1-1.5 mm, lobed for ca. 1/2; lobes triangular to spatulate, ciliolate. Corolla white, outside glabrous, sparsely to densely villosulous at throat and onto lobes; tube 5-7 mm; lobes ligulate-linear, 5-6 mm, obtuse. Ovules 2 per cell. Berry globose, 5-6 mm in diam., glabrescent; seeds 2-4. Fl. Apr-Jun, fr. Jun-Jan.

Forests or thickets on hills; 100-1000 m. Guangxi (Shangsi), Hainan [Vietnam].


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