Epiphytic herbs. Stems 10–43 cm long, simple or branching, leafy, horizontal to semi-pendent, rooting at base and turning up distally. Leaves flat, oblong or lanceolate, distichous, unequally bilobed or acutely bidentate. Inflorescence lateral, one-flowered. Flowers resupinate or non-resupinate, not opening widely, 4–6 mm wide, fugaceous. Sepals and petals free, or lateral sepals sometimes adnate to column foot, often incurved. Labellum obscurely trilobed, distinctly spurred, midlobe sometimes trilobed; disc sometimes with a transverse lamella behind side lobes and pressed against column foot; spur ecallose, sometimes hairy inside. Column with a short foot; pollinia two, entire.