Climber, 3 – 10 m long with white latex in all vegetative parts. Stems and branches twining and hanging, terete. Leaves opposite; petiole terete, slender, slightly canaliculate, 1.8 – 3

Herbs, erect, with clear latex in all parts. Leaves opposite, sessile; blade straight, filiform, succulent, coriaceous, base attenuate, margins entire, apex acuminate. Flower solitary, axillary or extra-axillary. Calyx deeply 5-parted,

Climbing epiphyte with white latex in all parts. Leaves opposite; blade thick, rigid, coriaceous, obovate or oblanceolate, margins entire, glabrous; apex aristate-acuminate, recurved; base obtuse to rounded. Inflorescences extra-axillary, umbel,

A twining epiphyte. Leaves broadly ovate, coriaceous, base subcordate to cordate, margins narrowly revolute, apex shortly acuminate, abaxial surface with scattered papillose. Inflorescence 10–49 flowered. Calyx yellowish green, sepals ovate,

Decumbent or twining herb, with clear sap in all parts. Leaves opposite, coriaceous, pubescent; ovate or ovate-elliptic or elliptic, 2.4–5.1 × 1.5–2.4 cm, apex acute, margins entire and ciliate; base

Plants terrestrial. Stem creeping, densely covered with scales; scales linear-lanceolate with long tail apex, concolorous, dark brown to nearly black, denticulate and thick at margin. Leaves monomorphic, imparipinnate. Laminae ovate