The Guiana Orchids. 277 



sides, flower spikes or racemes two feet or more high. 

 The only Guiana species is a pretty plant having white 

 flowers with a touch of yellow on the lip : — 



I. Bletia florida 



9. Diothonea. — One inconspicuous species has been 

 recorded from Guiana, a plant with leafy stems, narrow 

 leaves and flowers in a cluster at the top : — 



I. D. imbricata 



10. Scaphyglottis. — A genus of small plants having 

 fleshy internodes, with leaves and flowers from the 

 joints; leaves either narrow or half-cylindrical, Six 

 species : — 



1. S. violacea .. Flowers pinkish-violet. 



2. S. reflexa ... Flowers yellow. 



3. S. pallidiflora ... Flowers white. 



4. S. stellata ... Flowers purple. 



5. S. rosea ... Flowers rose. 



6. S. fasciculata 



11. Diacrium. — A single species, separated from Epi- 

 dendrum, with long tapering hollow pseudo-bulbs, from 

 the top of which spring two or three thick leaves, and a 

 raceme of white flowers with a touch of violet on the 

 lip. A very desirable plant but rather difficult to estab- 

 lish, possibly from want of ant prote6lion when under 

 cultivation. The plants should be colle6led on the 

 original logs and not be too much shaded. 



I. D bicornutum 



12. Isochilus. — Very inconspicuous plants with one or 

 more leaves on the top of the stem ; resembling Scaphy- 

 glottis, but the flowers clustered at the top instead of at 

 each internode. Three species : — 



1. I. linearis ... Flowers purple. 



2. I. fusiformis ... Flowers rosy. 



3. I. ramosus 



NN 



