284 THE ORCHID REVIEW. 
most beautiful and useful genus. Most of the various species of Dendro- 
bium can be well managed in one structure when growing, but when resting 
they are better for being separated, and placed in different houses. 
Generally speaking, the spring flowering kinds, such as D. crassinode, D, 
Wardianum, D. Falconeri, D. Devonianum, D. aureum (heterocarpum), 
D. nobile, and many other species and hybrids which flower only after 
resting, should, after completing their season’s growth, be removed to a 
department offering similar conditions to the Mexican house, where they 
should remain throughout the winter months. Upon their removal the 
supply of water should gradually be 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 D. thyrsiflorum, D. 
densiflorum, &c., should, if possible, be given a place even cooler 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, as it also does D. Wardianum and the Thunias. 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. Bensoni, D. Lowii, D. hyll D. gat 
F PDAS 
Dearii, D. Parishii, D. formosum, and all the D. Phalznopis section. 
These would be seriously injured if allowed to become too cold. A 
temperature ranging from 60° to 65° is a good one for them during the 
winter months. 
Such miscellaneous species as Mormodes, Catasetums, Cycnoches, 
Coryanthes, Chysis, and Cyrtopodiums, as they complete their growth, 
should be thoroughly well rested by being suspended in the lightest and 
dryest part of the Cattleya or Mexican houses. 
Leelio-cattleya x elegans is a most variable Orchid, and a good many of 
its varieties are to be seen in flower at this time of the year. Although there 
are so many different varieties, I have never yet seen one that could not be 
called pretty, and worthy of its room. It should be grown at the warmest 
end of the Cattleya house ; as should also C. Leopoldi, C. granulosa, and 
C. elongata (Alexandra), likewise now in flower. Cattleya Dowiana aurea, 
too, will be flowering this month. Take great care of this lovely and now 
rather scarce species, and see that it does not rot at the flower spike after 
the flowers are cut ; for, if so, the leaf, and the greater part of the pseudo- 
bulb, will decay before it can be stopped. When this is so, it is a great 
misfortune, for it has at all times a delicate constitution, and rarely is it 
possible to again bring the same plants back to their former strong and 
healthy condition. To avoid this, entirely remove the spike and the sheath, 
and sprinkle on the wound a pinch of powdered charcoal, at the same time 
placing the plants in a warm and dry position in the Cattleya house as thet 
