260 THE ORCHID REVIEW. [Nov.-Dec., 1917. 
Renantheras require the same treatment, but succeed with slightly less heat. 
CALANTHES.—The deciduous section will now be in bloom, and at this 
season all flowers are scarce and appreciated. When about two-thirds of 
the flowers have opened they may be removed to cooler quarters, where 
their flowering period will be prolonged. They will now need very little 
water, and as soon as the flowers are over they should be placed in their 
resting quarters on a light shelf, in a temperature of about 55° F., where no 
water will reach them. The later-flowering varieties, as C. Regnieri and 
some of the hybrids, should have every encouragement to develop their 
flower spikes. 
OponToGLossums.—Plants of O. Uroskinneri, O. bictoniense, and 
others of this section that are growing fast, and are in want of new rooting 
material, may have attention. These fleshy-rooting plants should not be 
potted too firmly, and the compost must be thoroughly porous. Like O- 
grande, they require a slightly higher temperature during the winter than 
the Columbian species ; therefore it is advisable to remove them to the cool 
end of an Intermediate house. These remarks also apply to O. Insleayi, 
O. Schlieperianum, O. Rossii, and O. Cervantesii. O. citrosmum has now 
completed its pseudobulbs, and water should only be afforded it at long 
intervals. 
MILTONIA VEXILLaRIA and its hybrids are now growing rapidly, and the 
roots are pushing through the new compost. They require care as regards 
watering, as they are not yet capable of taking full supplies. The compost 
should become dry between each application, but by the spring they will 
take water readily, and produce strong spikes. They should occupy 4 
light position in a house where a temperature of 55° F. is maintained at 
night, with a slight increase during the day. On weak delicate plants the 
leaves may remain enfolded together, in which case they should be liberated 
at once, to prevent them from becoming deformed. M. Roealii, M- 
Phalenopsis, and M. Bleuana require rather more heat, and should be 
placed in the warmest part of the house. 
SOBRALIAS.—Any plants that are pushing new roots from the base of 
the young growths may have new material afforded them, if they requife it. 
They succeed in a similar compost to that used for the green-leav 
Cypripediums, with rather more good fibrous loam added. After root 
disturbance they should be watered carefully, but when well-established 
dryness at any time must be avoided. The proper place for these plants ihe 
whole year round is the Intermediate house ; they like plenty of light. — 
CympipIuMs.—Plants of C. Lowianum and its hybrids should also enjoy 
all the light possible at this season, and those which are not as yet showing 
their flower spikes should for some little time to come still be kept o” S : 
dry side. Those in which the flower spikes are perceptible should recelve 
