When the third part of the Genera and Species of Oirhi- 

 deous Plants was published in 1833, I was only acquainted 

 with Myanthus cernuus, and cristatus, the latter of which I 

 considered a Catasetum, and the former as the only genuine 

 species of the genus ; to a certain degree mistaking the 

 real generic character of Myanthus, in consequence of the 

 imperfect materials of which only I was then in possession. 

 Now however that four species are known in a living state, 

 it has become necessary to alter the original character of 

 the genus so as to include Catasetum cristatum. This I 

 think is more advisable than to combine Myanthus with 

 Catasetum, as my learned friend Sir William Hooker has 

 recommended {Bot. Mag. fol. 3514). If the latter measure 

 were to be adopted it would be equally necessary to suppress 

 the ^enQYdiMonachanthus, Mormodes, Ci/cnoches, &c. the effect 

 of which would be to form a heterogeneous collection of 

 species, the principal combining character of which would 

 reside in the peculiar succulent stems. As the genera now 

 stand they have each a clear distinction, and each already 

 possesses as many species a:s are usually assembled vmder 

 newly discovered types of structure ; Myanthus has already 

 4, Cycnoches 2, Monachanthiis 2, Catasetum 5; and Moiinodes 

 is the only one that comprehends only a solitary species. 



Like the rest of its allies a tender stove plant. 



