105 



sented only by an irregular lobe springing from the left side 

 of the colnmn, (fig. 9). Pseudo-dimery. 



d) Upper sepal normal, lateral sepals grown together to a 

 very concave, two-topped whole. Petals normal, lip almost 

 normal, without a spur. The double sepal with a few irregular 

 edges (fig. 10). Pseudo-dimery. 



e) Flowers for the greater part normal. Blade of the lip irre- 

 gular: left lateral lobe cohering with the left half of the un- 

 developed middle-lobe (Fig. 11). 



/) Upper sepal normal. Lateral sepals grown together, with 

 one small rib at the innerside. Left petal normal, right petal 

 with a pale orange appendage originating in the labellum ; the 

 same petal at its base connected with the column by means 

 of a thin membrane. Top of the column tapering into a short 

 spout. Pseudo-dimery. 



g) Upper sepal normal, lateral sepals grown together turned 

 to the right. Only a small rib present. Petals normal. Label- 

 lum none. Pseudo-dimery. Compare i. 



h) Upper sepal normal. Lateral sepals thoroughly coalescing to 

 a strongly concave blade. The right petal with two tops. Lip 

 for the greater part normal, its right margin, however, not in 

 connection with the column and lateral lobe partly cohering 

 with the middle lobe. Pseudo-dimery. 



i) For the greater part normal. Lateral sepals free, with 

 appendage. Labellum more or less detached from the column, 

 spur present. 



j) As in /, left half of the middle lobe almost wanting and 

 cohering with the left lateral lobe. 



k) As in i. Lip quite free from the column, left half not quite 

 developed. Spur very short. 



/) Upper sepal normal, lateral ones grown together to a very 

 short two-topped whole, ribs scarcely visible. The right petal 

 normal, the left petal 3-lobed. Column two-toothed at the 

 top. Pseudo-dimery. 



As the little ribs and edges occur not only on coalesced se- 

 pals but, though rarely, also on free ones (/) they cannot be 



