Cynanchum natalitium Schltr.

Perennial, much-branched climber, up to 0.5 m long; basally corky in old plants with yellowish bark. Leaves fleshy, ovate to orbicular, or obovate, 20-50 x 15-35 mm, glabrous, base rounded to cuneate, apex obtuse and acuminate; petioles 7-25 mm long. Inflorescences umbelliform, 6-16-flowered, with 6-12 flowers open at same time. Peduncle 5-15 mm long. Pedicels 5-10 mm long. Buds: aestivation imbricate. Flowers green to brown, sweetly scented. Corolla rotate, basally fused, spreading, 3.5-5.0 x 1.5-2.0 mm. Corona white, urceolate, taller than gynostegium, 3.5-4.0 mm tall. Anthers trapezoid. Flowering time all year, peaking in Mar.-July. Follicles obclavate, 40-45 x 5-8 mm, light brown to brown, strongly beaked apically, keeled to winged.