Diaphananthe Schltr.

Epiphytic or rarely lithophytic herbs with short or long monopodial stems, usually unbranched and covered by sheathing leaf-bases; roots elongate, emerging all along stem through the leaf-bases, often prominent and rarely branched. Leaves distichous, coriaceous or fleshy, rarely thin-textured, unequally bilobed at apex, articulated at base to a sheathing leaf-base, often twisted at base to lie in one plane. Inflorescences 1–many, emerging through the sheathing leaf-bases in upper part of stem, usually several–many-flowered; bracts usually amplexicaul, rarely prominent. Flowers white, pale green or yellow, rarely pinkish, usually translucent, rarely showy. Sepals free, subsimilar. Petals free. Lip entire or obscurely lobed, spurred, usually with a tooth-like or transverse callus in the mouth of the spur. Column porrect; stipites 2; viscidia 1 or 2; rostellum pendent or reflexed, linear or tapering and bifid to pendent, clavate and obscurely 3-lobed.