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

1. Tarenna acutisepala F. C. How ex W. C. Chen, Acta Phyto­tax. Sin. 24: 477. 1986.

尖萼乌口树 jian e wu kou shu

Shrubs, 1-2.5 m tall; branches hispidulous or hirtellous becoming glabrescent, gray to reddish brown. Petiole 5-22 mm, hispidulous; leaf blade drying papery or subleathery, elliptic-oblong, lanceolate, oblong-ovate, or subovate, 4-19.5 × 1.5-5.6 cm, adaxially glabrous or sometimes sparsely puberulent along midrib or sparsely strigillose throughout, abaxially strigillose to hirtellous or sometimes glabrous, base cuneate, obtuse, or acute, apex acuminate or acute; secondary veins 5-7 pairs; stipules persistent, shortly united around stem, triangular, narrowly triangular, or lanceolate, 4-7 mm, hispidulous to glabrescent, acute. Inflorescence corymbiform to congested-cymose, 2.5-3 × 3-4 cm, several to many flowered, strigillose, pedunculate; peduncle 0.5-1 cm; bracts lanceolate to triangular, 1.5-2 mm; pedicels 0.5-3 mm. Flowers subsessile to pedicellate. Calyx strigillose; hypanthium portion ellipsoid to ovoid, 1-1.5 mm; limb 1.5-2 mm, deeply lobed; lobes triangular-lanceolate, apex acute. Corolla pale yellow, glabrous outside; tube ca. 10 mm, villosulous inside upper part and throat; lobes narrowly elliptic, ca. 4 mm. Ovules 16-20 per cell. Berries subglobose, 5-7 mm in diam., strigillose or glabrous; seeds 9-31. Fl. Apr-Sep, fr. May-Nov.

● Forests or thickets at streamsides in valleys or on mountain slopes; 500-1600 m. Fujian, Guangdong, Guangxi, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan.


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