ONCIDIUM. 
Swartz act, Holm. 239 (1800). Brown, in Hort. Kew., V. 215. LO. 196. ° 
For the distinction between this well-known genus and Opon- 
TOGLOSSUM, the reader is referred to that article. 
In some of the sections, whether artificial or natural, into which 
Oncidium is here divided, the limits of the Species are clearly 
definable ; in others it is extremely doubtful whether some which 
the author still retains ought to be admitted as anything more 
than forms of one common type, as 
PrurituBercutara. It will also be found that supposed species 
itati ich the 
been placed in his hands without reserve. 
Oct. 17, 1855. 
