UL RERO cera 
4 MALAXIDEZ. PLEUROTHALLEZ. 
Labellum petalis difforme — 
Sepala et petala conformis. Labellum pla- 10. OBSRONÍA: 
num saepius truncatum - - : 
Sepala et petala conformia. Labellum medio ] 27. MESOCLASTES. 
constrictum basi concavum E - 
Pollinia 4. 
Sepala lateralia connata. oe 
Sepalum supremum acuminatissimum - - - 9. RESTREPIA. 
Sepalum supremum lateralibus conforme - - 8. GASTROGLOTTIS. 
Sepala lateralia libera. 
Sepala et petala subzequalia erecta. 
Anthera biloba = - - - - 22, Ca@Lia, 
Anthera integra 
Anthera longitudin. dehiscens 
Labellum integerrimum. Columna bicornis 20. DENDROCHILUM. 
Labellum trilobum. Columna mutica 
Pollinia collateralia (00 00) - 25. C&LoGYNE. 
Pollinia incumbentia (8 $ - - 26. DicryPTa.- 
Anthera transverse dehiscens 
Labellum ventricosum - - - 23 PHOLIDOTA. 
Labellum lineare basi auriculatum - - 21. OTOCHILUS. 
Sepala et petala patentissima vald? inzqualia. 
Labellum cum columna angulum rectum E 13. MicROsTYLIS. 
basi sagittatum v. cordatum - - : ^ 
Labellum cum columna subparallelum 
Labellum (nanum) petalis conforme. Pollinia in- } 15 MALAXIS 
eumbentia (§ 8) - - - ; 
Labellum petalis majus et difforme. Pollinia col- 
lateralia (00 00) 
Labellum integrum. Columna elongata. 
Labellum basi cucullatum cum facie co- 
lumnz alté accretum, sepalis laterali- } 11. Empusa. 
bus obliqué connatum - - 
Labellum basi planum 
Columna semiteres - - 19. Liparis. 
Columna disciformis compressa — 12. PrATYsTYLIS. 
:  Labellum tridentatum, nuncexcavatum. Co- 
lumna nana - - ~ } ee 
Pollinia 8. 
Labellum calcaratum r - E - - 16. NEPHELAPHYLLUM. 
Labellum ecalcaratum : 
Petala aristata - E - - - 17. ACIANTHUS. 
Petala mutica : 
Columna semiteres - -~ - - 3. OCTOMERIA. 
Columna alata, apice cucullata., Labellum lamellatum 24. DiLocHia. 
I. PLEUROTHALLIS. 
Pleurothallis, R. Brown, in Hort. Kew. 5. 211. 
Sepala conniventia, subzequalia : lateralibus v. omnibus connatis. Petala 
minora. Labellum liberum, cum columna subparallelum, integerrimum, 
petalis difforme. Columna elongata, aptera, libera, cum ovario continua. 
Anthera apice membranacea. Pollinia 2, nunc materie pulvereà ad apicem 
coherentia. Herbe epiphyte, rhizomate repente filiformi. Caules 
filiformes, monophyili, szpitis vaginati. Flores axillares, solitarii, V. 
fasciculati, v. racemosi, herbacei v. fusci. 
The species of this genus are in great want of careful examination by 
some West Indian Botanist who has opportunities of seeing them alive: 
In Herbaria the specimens are almost always bad, and the parts are beside$ 
difficult to make out, on account of their minuteness. I am in possession 
