﻿September, 1904.] THE ORCHID REVIEW. 



ing similar conditions to the Mexican house, where they should remain 

 through the winter months. Upon their removal the supply of water 

 should be gradually lessened, and in a month or two's time, a very little 

 water indeed will be found necessary to keep the plants quite plump and 

 healthy. 



Such evergreen species as Dendrobium thyrsiflorum, D. densiflorum, 

 &c, should, if possible, be given even a cooler treatment than the Mexican 

 house. A cool greenhouse, for instance, where the temperature sometimes 

 falls as low as 40 , providing the root and the atmosphere is dry, suits them 

 well. On the other hand there are a lot of Dendrobiums that will take 

 harm if subjected to a low temperature at any time, even when at rest. The 

 chief amongst these are D. Bensonae, D. Lowii, D. macrophyllan, D. 

 aggregatum, D. Dearii, D. Parishii, D. fofmosum, and all the D. Phalae- 

 nopsis section. A temperature ranging from 6o° to 65 is a most suitable 

 one for them during the winter months. The magnificent D. Phalaenopsis 

 is now about to flower on this season's growth, everything having been 

 favourable for the production of large and well-developed pseudobulbs, 

 which will produce strong many-flowered scapes. A fair amount of water 

 should be given these until the flowers are over, when the commencement 

 of a long and complete rest should begin. The beautiful white flowering 

 D. formosum giganteum is also producing its blooms on the early made 

 bulbs, and should have similar treatment to that mentioned for the former ; 

 those not in such a forward state must, however, be given a more plentiful 

 supply of water at the root. 



DENDROBIUM BENSONjE. 



Dendrobium Bensoisle is one of the most beautiful species in the genus, 

 though often found difficult to cultivate satisfactorily for any length of 



