Melodinus fusiformis Champ. ex Benth.

Woody climber. Branchlets glabrous to densely pubescent. Leaves opposite; petiole 3.5-9 mm long, glabrous to densely pubescent; blade ovate, 6.3-20.5 by 1.3-10 cm, 1.6-6 times as long as wide, apex acuminate, base obtuse, glabrous to sparsely pubescent above and then more densely so on midrib, glabrous to densely pubescent all over beneath and then more densely so on venation, 9-19 pairs of secondary veins, tertiary venation reticulate. Inflorescence terminal, 4-5 cm long; pedicels 3.2-13 mm long, densely pubescent. Sepals ovate, 2-4.2 by 1.3-2.4 mm, 1.3-1.9 times as long as wide, apex obtuse to acute, glabrous to densely pubescent, ciliate. Corolla white, sometimes with a yellow ‘eye’; tube 10-16 mm long, 0.8-1.9 times as long as lobes, 4.4-7 times as long as calyx, short pubescent throughout or only in upper half outside; lobes 6.4-18 by 3.3-11.5 mm, 1.6-4.4 times as long as wide, asymmetrically obovate, apex rounded, pubescent all over or pubescent only at very base outside, pubescent inside; corona lobes free, 2-4 mm long, puberulent. Stamens inserted at 0.2-0.3 of corolla tube length from base; anthers 1.5-2.1 by 0.3-0.7 mm. Ovary 1.4-1.5 mm high; style 1.7-4 mm long; style head 1.4-2.2 mm long. Fruit fusiform to subglobose, 4-10 by 2.5-5 cm.

It is a tropical plant. It grows in dense mountain forests between 800-1,800 m above sea level. In Yunnan.