8 ORCHIDS OF JAMAICA 



Flowers large, solitary, axillary 



to la r;;.' leaves. With or 



without pseudobulbs 48. Maxilla via. 



Flowers small, solitary, axil- 

 lary to small two-ranked 

 leaves. No pseudobulb 59. Dichcea. 



Flowers small, in clusters, 

 axillary in sheaths of large 

 leaves. No pseudobulbs ... 49. Nco-urbania. 



2. Lip not jointed to foot of column; 

 erect. 

 Stem covered with imbricated 

 sheaths in two ranks, with 

 pseudobulbs here and there 50. Omithidium. 

 Stem bearing short linear 

 leaves in two ranks ; no 

 pseudobulbs 25. Isochilus. 



b. Column without foot. 



Claw of lip as long as column, 

 with which it is connate into 

 a cup. No pseudobulbs. Pol- 

 linia connected in pairs by 

 a viscous substance which 

 stretches elastically into two 



threads 28. Seraphyta. 



Claw of lip shorter than column, 

 with which it is connate into 

 a cup. Pseudobulbs present. 

 Pollinia connected by a vis- 

 cous substance 32. Hormidium. 



Claw of lip erect, adpressed to 

 column, and more or less con- 

 nate with it into a tube, but 

 sometimes quite free. Pe- 

 duncle terminal, simple or 

 branching. With or without 

 pseudobulbs. Pollinia con- 

 nected in pairs by a granular- 

 viscous linear appendage 30. Epidendrum. 



Lip free from column, and em- 

 bracing it at base, produced 

 below into an adnate spur. 

 Pseudobulbs present 31. Broughtcnia. 



Lip free from the column and 

 continuous with its base, 

 spreading, claw long and 

 keeled - crested above. No 

 pseudobulb 58. Cryptarrhena. 



Lip free, subsessile, somewhat 



similar to sepals and petals ... 37. Homalopetalum. 



B. Pollinia 8. 



Without pseudobulbs. 



Flowers numerous, mauve, in a 



long dense spike 29. Arpophyllum. 



Flowers greenish or whitish-yellow, 



corymbose 35. Brassavola. 



Flowers creamy- white, racemose ... 26. Octadesmia. 



