scrambling, monopodial subshrubs. Stems erect to pendulous, terete, elongate, branched.
Leaves terete, fleshy, channeled adaxially, jointed, sheathing at base; sheaths
thickly leathery, tightly enclosing stem. Inflorescence axillary, 1 to few
flowered racemes. Flowers variable in size, shape and colour. Sepals and petals
spreading, similar, free. Petals usually larger; lip 3-lobed, adnate to column
foot, immovable; lateral lobes erect, either embracing or parallel to column;
mid-lobe dilated, apex 2-3-lobed; spur funnel-shaped. Column short, terete,
fleshy; rostellum elongate; pollinia 2, shortly cleft, waxy; stipe triangular
or subquadrate; viscidium large.