Tylophora arenicola Merr.

Lianas to 1 m, sometimes prostrate. Stems sparsely puberulent. Petiole 3-10 mm; leaf blade oblong to ovate, 2-8.5 × 0.5-4 cm, papery to subleathery, glabrous to abaxially sparsely puberulent, base rounded, apex rounded or apiculate; lateral veins ca. 4 pairs, flattened. Inflorescences shorter than leaves; cymules clustered, dense, racemelike. Pedicel ca. 1 cm. Sepals ovate-trianglar, ca. 1.5 × 1 mm; glands 5. Corolla greenish yellow, rotate or subrotate; lobes oblong, ca. 3.5 × 2 mm, veined, glabrous. Corona lobes broadly oblate, pouched, apex obtuse to subtruncate, covering anther base. Anther appendages rounded; pollinia globose, horizontal. Stigma head depressed. Follicles lanceolate, 4-6.3 cm × 7-10 mm, glabrous. Seeds ovate, ca. 4 × 3 mm; coma ca. 2 cm. Fl. May-Aug, fr. Sep-Dec.

Thickets, sandy seashores. Guangdong, Guangxi, Hainan [Vietnam].