The Culture of Greenhouse Orchids 



a natural hybrid of crispvm and lutco-purpurcum, 

 and one of the best — one of the costliest also if 

 good. Large. Yellow, barred and spotted with 

 light brown ; lip clear yellow. April and May. 

 New Granada. Fiijvrcd, p. 189. 



Oncidium. 



(A .swelling, from the warty tubercles at base of 

 the labellum.) 



Oncidiums rank next to Odontoglots in the 

 number of species they furnish to the cool house. 

 Much that lias been said of the latter applies 

 to them, but they need a distinct resting season. 

 Oncids also are exclusively American, but the 

 majority do not dwell on misty highlands like the 

 Odontoglots. Some of those which we grow in 

 the cool house are used to a higher temperature ; 

 but the genus is accommodating. All species which 

 I name do as well there as in the warm, and some 

 better. There are Oncids which demand great 

 heat ; but with such, of course, we have nothing to 

 do in this chapter. 



They should be potted like Odontoglots — if 

 potted. Many are so large, indeed, as to be incon- 

 venient upon a block, or even in a basket. As a 

 ]3rinciple, it should be remembered that Oncids 



190 



