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

3. Tarenna austrosinensis Chun & F. C. How ex W. C. Chen, Acta Phytotax. Sin. 22: 145. 1984.

华南乌口树 hua nan wu kou shu

Shrubs, ca. 2 m tall; branches terete to flattened, glabrous, becoming pale gray. Petiole 5-15 mm, glabrous; leaf blade drying papery or membranous, blackish brown, elliptic-oblong or oblong-lanceolate, 5-15 × 2-4.5 cm, glabrous on both surfaces or puberulent to strigillose abaxially, base cuneate to acute, apex acuminate; secondary veins 6 or 7 pairs, without domatia; stipules generally deciduous leaving truncate persistent base, ovate to triangular, 3-5 mm, glabrous, acuminate. Inflorescences corymbiform to cymose, ca. 3 cm, few flowered, strigillose; peduncle 4-5 mm; bracts linear to triangular, 1-3 mm, acute; pedicels 3-7 mm. Flowers pedicellate. Calyx with hypanthium portion cupular to ellipsoid, 1-1.5 mm, sparsely puberulent to hispidulous; limb 2-3 mm, glabrous, lobed for ca. 1/2; lobes triangular, apex acute. Corolla pale green, outside glabrous; tube ca. 7 mm, villosulous inside and at throat; lobes ovate, 3-4 mm, apex acute. Ovules 6-9 per cell. Berries globose, 5-6 mm in diam.; seeds 6-14. Fl. Apr-May, fr. Aug-Sep.

● Forests on mountains; 800-1300 m. Guangdong (Xinyi), Guangxi (Jinxiu), Hunan (Yizhang).


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