4. Mussaenda chingii C. Y. Wu ex H. H. Hsue & H. Wu, Acta Phytotax. Sin. 24: 236. 1986.
仁昌玉叶金花 ren chang yu ye jin hua
Shrubs, ca. 1.5 m tall; branches terete, appressed pubescent. Leaves opposite; petiole 5-6 mm, sparsely appressed pubescent; blade drying papery, adaxially shiny green, abaxially glaucous, broadly ovate-elliptic or broadly ovate, 5.5-7.5 × 3-4.7 cm, both surfaces sparsely appressed pubescent with pubescence denser along veins, base rounded or obtuse, apex cuspidate, acute, or acuminate; secondary veins 6 or 7 pairs; stipules deciduous, lanceolate or ovate, ca. 6 mm, densely pubescent, deeply 2-lobed, lobes narrowly triangular. Inflorescences congested-cymose to somewhat lax, ca. 4 × 4.5 cm, densely pubescent, pedunculate or subsessile and tripartite; peduncle 1-1.5 cm; bracts linear, ca. 3.5 mm. Flowers shortly pedicellate. Calyx sparsely to densely pubescent; hypanthium portion cylindrical to ellipsoid, ca. 2.5 mm; lobes lanceolate-triangular, 1.5-2 mm, acuminate, 1 lobe on 1-3 flowers per inflorescence expanded into calycophyll, blade elliptic to obovate, ca. 2.4 cm × 9 mm, pubescent along veins on both surfaces, base cuneate, stipe ca. 10 mm, apex acute. Corolla yellow to orange, outside sparsely to densely appressed pubescent; tube ca. 21 mm, inside densely yellow clavate puberulent in upper part; lobes orbicular-ovate, ca. 2.5 mm, inside yellow papillose, acute to apiculate. Berry unknown. Fl. May.
● Thickets. Guangxi.