cuneate, incurved spreading, the upper margin irregularly 

 toothed, a little wider than the sepals ; lip somewhat orbicular, 

 concave crenulate, bearing a subulate tubercle towards the base, 

 appendage erect fleshy bipartite, the segments flattened horn- 

 like obtuse curved ; column bilobed, cells of the anther situate on 

 the exterior margin of either ear-like lobe, erect, glands of the 

 pollinia uppermost, near the summit ; stigmas 2 ; ovary cylin- 

 drical. 



Description from 2 living and several dried specimens. Colour 

 of the sepals green and dull purple ; petals delicate clear rose, 

 sometimes striped ; lip pale green at base, the tubercle bright 

 emerald-green, tijjped with rosy stripes near the margin; appen- 

 dage whitish, rosy at base ; anther deep red-brown. This is by 

 far the prettiest of all the Pterygodiums known to me, though its 

 beauty is on a small scale. It is by no means a common plant, 

 not having been gathered either by Burchell, Drege, Ecklon or 

 Zeyher, and more than one or two plants are never seen at one 

 time. It should be searched for amongst quartz rocks, or in 

 quartzose sand. 



