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,

Plant epiphytic, tufted. Pseudobulbs erect, fusiform or cylindric. Foliage leaves 2–3, distichous, spreading, slightly recurved, linear-oblong, elliptic or oblong, 2–3 × 3–5 mm, apex unequally and shortly 2-lobed, each lobe

Terrestrial, sympodial herb. Pseudobulbs green, slenderly obconical to terete. Foliage leaves 4–7; lamina falcate to narrowly lanceolate or often falcately lanceolate with slightly asymmetrical base, acuminate, glabrous, margins undulate. Inflorescence