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

7. Tarenna lanceolata Chun & F. C. How ex W. C. Chen, Acta Phytotax. Sin. 22: 139. 1984.

广西乌口树 guang xi wu kou shu

Shrubs, 0.5-3 m tall; branches densely strigillose becoming glabrescent, often brownish red. Petiole 0.3-1.8 cm, densely strigillose; leaf blade drying papery, lanceolate to oblanceolate, 5-32.5 × 1-5 cm, adaxially sparsely scabrous or strigillose on lamina and densely strigillose on principal veins, abaxially strigillose to pilosulous with pubescence denser on principal veins, base acute or cuneate, apex long acuminate; secondary veins 7-10 pairs, apparently without domatia; stipules generally persistent becoming brown and hardened, partially fused around stem, lanceolate to triangular or ovate, 3-4 mm, strigillose or glabrescent on margins, acute to cuspidate. Inflorescences corymbiform and often nodding, ca. 2 × 3 cm, several to many flowered, densely strigillose, sessile or pedunculate; peduncle to 5 mm; bracts linear to narrowly lanceolate, 2-10 mm; pedicels 1-3 mm. Flowers pedicellate. Calyx in bud with hypanthium portion ellipsoid to ovoid, 1.5-2 mm, densely pilosulous to puberulent; limb lobed nearly to base, densely strigillose; lobes linear to narrowly lanceolate, 3-5 mm, sometimes unequal on an individual flower. Corolla in bud densely strigillose outside. Berries subglobose, 3-6 mm in diam., puberulent, strigillose, or glabrescent; seeds 8-32. Fl. buds Oct, fr. May-Nov.

● Forests or thickets in valleys; 700-1600 m. Guangxi, Guizhou, Hunan (Dongkou).

W. C. Chen (in FRPS 71(1): 372. 1999) described the stipules as 6-10 mm, but the specimens studied (including several paratypes) all have stipules 3-4 mm.


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