(Plate 103; Fig. 679.1) Epiphytic herbs. Roots scabrous, rasp-like, broad, flat, grey. Stem usually a single growth, occasionally up to 10 cm long, erect, horizontal or pendent, the portion below the leaves covered with the imbricate scarious remains of the leaf-sheaths. Leaves 3–6, oblong or narrowly oblong, apex acute or oblique, margins sometimes undulate, coriaceous, smooth or harsh and dry to the touch, sometimes strongly suffused with purple. Inflorescence many-flowered, pendent, the flowers opening in one or a few episodes, simultaneously or in groups, fugaceous; peduncle shorter than rachis; floral bracts minute. Flowers resupinate, short-lived (1–3 days), usually opening widely, pale orange with red spots and blotches, labellum white, or ochre-yellow irregularly and heavily blotched and spotted brown. Sepals and petals free, subsimilar and usually of equal length, spatulate or almost filiform. Labellum hinged to apex of column foot, trilobed, spurred, side lobes erect, incurved and overlapping each other at distal end but not enclosing column, midlobe situated at top of base of spur, tooth-like, disc with three calli, a central centrally grooved one and a tooth-like one at base of and joined to each side lobe opposite central callus; spur situated at distal end of labellum, hollow, obtuse, broader than deep. Column with foot set at an acute angle with column proper; anther cap with a beak, pollinia four, in two closely appressed subequal pairs sessile on stipe, viscidium oblong or subobovate; stigma deeply set; rostellum composed of two widely separated, decurved, toothlike arms.