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

19. Mussaenda macrophylla Wallich in Roxburgh, Fl. Ind. 2: 228. 1824.

大叶玉叶金花 da ye yu ye jin hua

Mussaenda hispida D. Don; M. kotoensis Hayata.

Erect or climbing shrubs; branches terete to quadrangular, sparsely to moderately sericeous. Leaves opposite; petiole 4-35 mm, sparsely hirsute to glabrescent; blade drying membranous to papery, green to brownish, paler below when specimen well preserved, elliptic-oblong, elliptic, or ovate, 12-21 × 8-11 cm, both surfaces sparsely strigillose to pilose on lamina and moderately hirsute along principal veins, base cuneate to obtuse, apex acute to acuminate; secondary veins 6-8 pairs, without domatia, tertiary venation reticulate; stipules deciduous, ovate to triangular, 5-8 mm, sparsely brown hirsute to glabrescent, deeply 2-lobed, lobes acute to acuminate. Inflorescences laxly cymose, 6-15 cm, hirsute, sessile with arching lateral axes; bracts lanceolate or 2- or 3-parted, 5-10 mm, obtuse to acuminate. Flowers subsessile, biology not noted. Calyx with hypanthium portion campanulate to obconic, 3-4 mm, densely brown strigose to sericeous; lobes lanceolate, ligulate, or oblanceolate, 4-11 × 1.5-3 mm, often unequal on an individual flower, densely to moderately strigillose to strigose, acute, with 1 lobe on 1 to several flowers in each inflorescence expanded into white calycophyll, blade broadly ovate or rhombic, 5-12 cm, both surfaces sparsely hirsute to glabrescent on lamina and moderately to densely pilosulous to puberulent on principal veins, base obtuse to truncate, stipe 18-37 mm, apex obtuse to shortly acuminate. Corolla orange-yellow to golden yellow, salverform, outside densely sericeous; tube 20-25 mm; lobes ovate, 7-10 mm, acute to acuminate. Berry ellipsoid, 10-15 mm, strigose, lenticellate, calyx limb deciduous. Fl. Jun-Jul, fr. Aug-Nov.

Thickets or forests on mountains; sea level to 1300 m. Guangdong, Guangxi, Taiwan [Indonesia, Malaysia, Philippines].

This species is circumscribed somewhat differently here than by H. H. Hsue and H. Wu (in FRPS 71(1): 287-289. 1999); see comments under Mussaenda treutleri.


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