It constitutes, along with some other South American 

 plants with a similar habit, a genus representing among 

 Vandeae Isochilus in the Epidendreous section ; and distinctly 

 characterized by its flowers having the calyx and corolla of 

 Speckliniay combined with pollen masses of a very unusual 

 structure. When four pollen masses are combined in pairs, 

 they are usually pressed so close together that the one is 

 flattened against the other, and they seem as if in reality 

 each pair were produced by the slitting of one ; in this genus, 

 on the contrary, each mass is rounded and separate from its 

 neighbours. 



When I published this plant in the work above quoted, 

 under the name of Cladobium violaceum, I had not seen the 

 late parts of Poppig and Endlicher's Nova genera, which ap- 

 peared in the end of 1835 ; and consequently I was unaware 

 of the genus having been already named Scaphyglottis in 

 that work. Perhaps as the name Cladobium was in circu- 

 lation, from me, so long since as February, 1835, I might on 

 that ground set up a claim to priority, and preserve it; 

 but as Mr. Poppig has described several species, I think 

 the interests of science will be best consulted by cancelling 

 Cladobium and adopting Scaphyglottis. 



Of the dissections, 1. is an entire flower seen in profile 

 and magnified ; 2. is a side view of the column and lip ; 

 3. a view of the lip from above ; 4. a set of pollen masses 

 with their gland. 



