Holothrix grandiflora Rchb.F.

Plants erect, scape with bracts, glabrous or with a few minute hairs at the base, 190-250 mm high; leaves often withered at anthesis, glabrous. Flowers: Sepals glabrous, 4.5-9 x 1.5-4.5 mm. Petals divided into 5-9 carnose filiform lobes, 10-22 x c. 1.5 mm, white with pale green or lilac at the base. Lip divided into 13-26 filiform, carnose lobes, 12.5-25.5 x 3.5-6.5 mm; limb usually flaring into a broad distal section, colour as for petals; spur very broadly conical, slightly curved, 1/5 to 1/4 as long as the lip, 3-4.5 mm long. Gynostemium with a terminal connective process.