276 TlMEHRl. 



4. 06lomeria. — This genus is also similar in habit to 

 Pleurothallis but the flowers are stemless, clustered, and 

 even less conspicuous. Two species : — 



1. O. tridentata ... Flowers yellow. 



2. O. Surinamensis ... Flowers yellow. 



5. Liparis. — With this genus we come to a different 

 type, with pseudo-bulbs. Only one species has been 

 recorded from Guiana, a small plant with broad, thin, 

 ribbed leaves suffused wich crimson, and flowers in a 

 loose spike : — 



I. L. elliptica ... Flowers reddish brown. 



6. Bulbophyllum. — The Guiana speciesaresmall plants, 

 more curious than beautiful. The flower-spikes are 

 lateral and therefore the genus is an exception to 

 the rule laid down for the tribe The species have small 

 pseudo-bulbs with one or two thick leaves on the top. 

 The commonest, B. bra6leo!atum, is called rat's tail in 

 the colony from the shape and size of the flower-spike, 

 the resemblance being increased by the little flowers 

 being inserted as it were into small pits all along the 

 surface. Four species : — 



1. B. brafteolatum ... Flower-spike thick, fleshy. 



2. B. setigerum ... Flower spike thin, drooping. 



3. B. quadrisetum ... Flower-spike thin, almost upright. 



4. B. Geraense 



7. Elleanthus. — Inconspicuous plants with leafy stems 

 and flowers in terminal spikes supported by large bra6ls. 

 Two species : — 



1. E. furfuraceus ... Flowers bright red, 



2. E. Caravata ... Flowers yellow. 



8. Bletia. — Handsome plants growing in sand, with 

 roundish tubers depressed to the level of the ground, 

 from which rise long thin ribbed leaves, and, from the 



