ORCHID ACEiE. 



293 



foliosum has purple; carneum, blush; papillosum, rose-colour ; 

 and candidum, white flowers. 



DIURIS. 



These are tolerably hardy Orchids from Australia, with 

 very beautiful flowers of a golden yellow, spotted yellow, 

 sulphur, purple, or white colour ; the species are aurea, 

 maculata, sulphured, alba, longifolia, etc. ; from the Swan 

 Biver particularly there are Drummondii, laxi flora, corymbosa, 

 flli folia, etc. 



The Orchids called Epiphytes are those which do not 

 grow in the soil of the ground, but cling to the bark of 

 trees for support, where they gain nourishment, not from 

 the tree to which they adhere, but from small accumula- 

 tions of soil or decaying bark, or other vegetable substances 

 found in the crevices of the bark ; they are therefore not 

 true parasites. The species which are introduced into this 

 country are grown on logs of wood or in baskets of moss 

 and chips suspended from the roof; these plants however 



