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

11. Mussaenda frondosa Linnaeus, Sp. Pl. 1: 177. 1753.

洋玉叶金花 yang yu ye jin hua

Climbing shrubs; branches terete to compressed, moderately to densely pale red sericeous to hirsute becoming glabrescent, red-brown or brown, rather densely lenticellate. Leaves opposite; petiole 4-10 mm, densely sericeous; blade drying thinly papery or leathery, adaxially dark green to brownish green, abaxially pale green to yellowed, broadly elliptic, elliptic-oblong, ovate, or oblanceolate, 8-15 × 3-8 cm, both surfaces sparsely strigillose on lamina and strigose to sericeous on principal veins, base acute, obtuse, or rounded, apex acute to caudate-acuminate; secondary veins 7-10 pairs, tertiary venation visible and reticulate; stipules persistent, triangular, 5-10 mm, densely strigose to pilose, deeply 2-lobed, lobes lanceolate to narrowly triangular, acute to acuminate. Inflorescences congested-cymose becoming lax with lateral axes elongating markedly, 4-8 × 8-20 cm with lateral axes to 8 cm, sparsely to moderately pubescent with 2 types of pubescence, mixed strigillose to appressed puberulent and hirsute to villous, pedunculate or sessile and 3-partite; peduncles 1-3 cm; bracts triangular or elliptic, 4-10 mm, usually 2- to multifid, acute to acuminate; pedicels 1-6 mm. Flowers pedicellate, biology not noted. Calyx with hypanthium portion ellipsoid, 3-4 mm, strigose to sericeous; lobes narrowly triangular to narrowly ligulate, 7-12 mm, hirsute, acute to acuminate, with 1 lobe of 1-4 flowers per inflorescence sometimes expanded into calycophyll, blade elliptic-oblong to ovate, 6-8 × 2.5-5 cm, both surfaces glabrescent on lamina and strigillose on principal veins, base acute to cuneate, stipe 10-30 mm, apex acute or acuminate. Corolla salverform, outside hirsute; tube 22-25 mm; lobes ovate, 6-7 mm, acuminate. Berry ovoid or ellipsoid, ca. 10 × 7 mm, strigose to glabrescent, calyx limb deciduous. Fl. Apr-May.

Cultivated in Guangdong and Hainan [native to Cambodia, India, Indonesia, Sri Lanka, and Vietnam].


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