Polystachya

Epiphytic, occasionally lithophytic or terrestrial, herbs with sympodial growth. Pseudobulbs usually present. Leaves linear to elliptic or oblanceolate, of various textures. Inflorescence a raceme or panicle, arising from the apex of the pseudobulb. Flowers usually not resupinate, usually scented. Lateral sepals fused to the column-foot to form a mentum. Lip usually 3-lobed, less often entire, glabrous or pubescent, often recurved, fleshy. Pollinia 2.