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

5. Aidia pycnantha (Drake) Tirvengadum, Nordic J. Bot. 3: 455. 1983.

多毛茜草树 duo mao qian cao shu

Randia pycnantha Drake, J. Bot. (Morot) 9: 218. 1895; Aidia acuminatissima (Merrill) Masamune; R. acuminatissima Merrill.

Shrubs or trees, 2-12 m tall; branches terete to flattened, densely tomentulose, pilosulous, or hirtellous with pubescence drying ferruginous, sometimes becoming glabrescent with age. Petiole 5-15 mm, densely hirtellous or pilosulous; leaf blade drying thinly leathery or papery, often reddish brown, elliptic-oblong, oblong-lanceolate, or oblong-oblanceolate, 8-27.5 × 2-10 cm, adaxially glabrous and slightly shiny, abaxially hirtellous or pilosulous with pubescence usually denser on principal veins, base cuneate to obtuse and sometimes slightly inequilateral, apex acuminate to caudate-acuminate with tip to 2.5 cm and sometimes falcate curved; secondary veins 10-14 pairs, in abaxial axils sometimes with weakly developed pilosulous domatia; stipules deciduous or sometimes persisting on apical 2 or 3 nodes, interpetiolar, lanceolate to narrowly triangular, 8-12 mm, densely strigillose to hirtellous or tomentulose, apex acute to acuminate. Inflorescences cymose with axes markedly dichasial, many flowered, 4-6 × 5-12 cm, branched to several orders, densely hirtellous to pilosulous or tomentulose; peduncle 0.5-1.5 cm; bracts linear-lanceolate, 2-4 mm, acute; pedicels 1-4 mm. Calyx densely hirtellous to strigillose; ovary portion 1-1.5 mm; limb with tubular portion 2-3 mm; lobes 5, narrowly triangular, 1-2 mm, acute to acuminate. Corolla white or pale yellow, outside glabrous; tube ca. 4 mm, densely villous in throat; lobes 5, oblong-oblanceolate or spatulate, 6-9 × 2-2.5 mm, obtuse to rounded. Berry 6-8 mm in diam., sparsely strigillose to hirtellous or subglabrous; seeds ca. 2 mm. Fl. Mar-Sep, fr. Apr-Dec.

Thickets or forests at streamsides, in fields or valleys, or on hills or mountain slopes; near sea level to 1000 m. Fujian, Guangdong, Guangxi, Hainan, Yunnan [Vietnam].


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