partially falcate. Petals similar to the sepals but rather smaller, of a yellowish-green 

 barred with reddish-brown. Lip whitish, unguiculate, hollowed on the disk. 



con- 



tinuous with the column, fleshy, folded inwards, tripartite, the lateral divisions being 

 inclined from the apex, and the centre one crescent-shaped and apiculate. By the 

 hollow, of the disk is a somewhat cup-shaped membranaceous appendage, usually 

 furnished with five aristae (awns) and two teeth, one in front, the other in the rear. 

 Column erect, elongated, half-rounded, with two tubercles at its base ; the clinandrium 

 lying low and flat, with an extended decurved beak. 



Fig. 1. Lip and column {magnified) seen in front. 2. Ditto, ditto, seen sideways. 



