158 THE ORCHID REVIEW. [Sepr.-Oct., 1920, 
to be potted, pressing the material into the receptacles moderately firmly, 
and water being applied with extreme care until the plants are well rooted. 
The pots and everything used should be throughly clean. The atmosphere 
must be kept moderately moist, and fresh air should be admitted on all 
favourable occasions, especially at night. The low temperatures once 
advocated did not give the best results, and an even temperature of 55° to 
60° is preferable. On bright days a slight spraying will also be beneficial, 
and help to check attacks of thrip and other pests. During the winter 
months these plants should enjoy all the light possible. 
MasbEvaLtias of the M. Harryana section should receive attention at 
the present season, if the compost is in a decayed or decomposed condition. 
A similar compost to that used for Odontoglossums will answer their 
requirements. 
DENDROBIUMs that have finished their growth should be thoroughly 
cleaned and placed in their winter quarters in the resting house. This is 
easily accomplished now that they have all completed their growths, and 
if the house and plants are throughly cleaned, they should not be much 
trouble until their flowering nodes begin to swell in the spring. Sufficient 
‘water shonld be given to prevent them from shrivelling, and a dry 
temperature of about 60° will be almost their only requirement. 
ONCIDIUMS.—Some of the plants of Oncidium Kramerianum and O. 
Papilio, known as the Butterfly Orchids, are now in bloom, and. will 
continue for a considerable period to produce fresh flowers from each stem. 
The flowering season should not be unduly prolonged, as the majority of 
‘Oncidiums will deteriorate, and possibly dwindle away entirely, if the 
flower spikes are allowed to remain on the plants too long. These interest- 
ing Orchids prefer a light position at all times, and the smaller plants 
should be suspended from the roof of the Cattleya house. They require a 
very small quantity of material in which to root. Whilst making their 
growth plenty of root moisture is necessary, but when at rest the compost ~ 
should be kept on the dry side. Oncidiums comprise some of the most 
decorative Orchids in cultivation, and are adaptable to any form of 
decoration. | 
PHAL#@Nopsis and Allies.—With the shorter days this bulbless group of 
‘Orchids, which includes Vanda, Aérides, Saccolabium, Angrecum, and 
others, will need less water, both at the root and in ‘tthe atmosphere. As 
soon as the tips of the roots are sealed over, the plants will only need water 
in sufficient quantities to prevent the leaves from showiug signs of distress. 
All should enjoy a light position during the dull days of winter. The 
species which produce their flower spikes early should have sufficient water 
to keep them plump and healthy. These plants need considerable attention 
during the winter months to keep them in the best condition. 
