Bolusiella Schltr.

Erect epiphytic or occasionally lithophytic, entirely glabrous monopodial herbs. Stems abbreviated, simple, leafy above, with numerous tufted roots below. Leaves equitant, imbricate, arranged in a vertical plane forming a fan, narrowly elliptic or ensiform to linear-ligulate, obtuse to acute, rigid and articulated to a sheathing base, fleshy, sometimes sulcate-canaliculate and falcate-recurved. Inflorescence exceeding leaves, densely or laxly many-flowered, arising from axils of old leaf-sheaths; peduncle shorter than or equalling rhachis, rarely longer; bracts small or large, imbricate and partially concealing flowers, membranous, grey to blackish brown or olive. Flowers resupinate, very small, white. Tepals free, oblong or narrowly elliptic, obtuse to acuminate, subequal, spreading. Lip entire or obscurely 3-lobed, spurred, oblong or ovate-elliptic, obtuse to acuminate, sometimes recurved; spur cylindrical, ellipsoid or conical, obtuse, usually shorter than lip. Column oblong, fleshy, constricted above, without a foot; rostellum subulate, hamate; anther quadrate, cucullate; pollinia 2, oblong or ellipsoid, each attached by a linear stipes to a large ovate viscidium.