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

10. Tarenna laui Merrill, Lingnan Sci. J. 14: 59. 1935.

崖州乌口树 ya zhou wu kou shu

Shrubs, 2-3 m tall; branches densely grayish yellow hispidulous or strigillose becoming glabrescent with age. Petiole 6-23 mm, densely strigillose; leaf blade drying papery and dark yellowish brown or blackish brown, oblong-elliptic or oblong-lanceolate, 5-15 × 1.5-6 cm, sparsely hispidulous to strigillose adaxially, sparsely to densely hispidulous or strigillose abaxially, base cuneate or acute, apex acuminate; secondary veins 6-8 pairs; stipules generally persistent, shortly united around stem, broadly triangular, 1.5-3, densely strigillose, acute. Inflorescences cymose to corymbose and somewhat lax, 6-10 cm, densely grayish yellow strigillose, pedunculate; peduncle ca. 1 cm; bracts triangular, 1-3 mm; pedicels 2-13 mm. Flowers pedicellate. Calyx densely strigillose; hypanthium portion cylindrical, ellipsoid, or urceolate, 2-2.5 mm; limb 1-2 mm, lobed for ca. 1/2; lobes ovate-triangular to triangular, apex acute. Corolla white, outside densely strigillose; tube 5-7 mm, villous in throat; lobes narrowly lanceolate to spatulate, 11-12 mm, acute to obtuse. Ovules ca. 15 per cell. Berry subglobose, 5-6 mm in diam., strigillose. Fl. May-Jul, fr. Jul-Feb.

● Forests on mountains; ca. 700 m. Hainan (Sanya).


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