Ancistrorhynchus Finet

Small to medium-sized monopodial epiphytic herbs. Stems short, thick, covered by persistent sheathing leaf-bases; roots elongate, clustered towards the base of the stem. Leaves imbricate, suberect, spreading or recurved, ligulate or tapering to apex, ± unequally bilobed at the apex, lobes sometimes toothed, coriaceous or fleshy. Inflorescences axillary from the lower leaves, almost sessile, usually forming globose or ellipsoidal heads; bracts chartaceous to membranous, as long as the flowers. Flowers mostly white, often marked with green on the lip. Sepals and petals free, subsimilar. Lip oblong to orbicular, entire to 3-lobed, spurred at the base, lacking a callus; spur straight to sigmoid or geniculate, sometimes swollen at the apex and/or the mouth. Column short, fleshy; rostellum projecting down then abruptly geniculate in the middle and upcurved in the apical half, 2-lobed, each lobe falcate and acute; anther-cap hemisphaerical, produced in front into a short truncate appendage; pollinia 2, globose; stipites either 2 and subspathulate or 1 and bifid; viscidium 1, long and narrow.