110 THE ORCHID REVIEW. {May, 1917. 
Cypripediums, and should be potted in the same manner. A shady position 
in the cool Intermediate house answers their requirements. 
ANGULOAs also thrive under the same conditions as Lycastes, and may _ 
be treated in precisely the same way. 
OponTocLossums of the grande and Insleayi section require a slightly 
higher temperature than that provided for O. crispum. The same thing 
applies to O. citrosmum and its varieties. During the winter months they 
are best grown at the coolest end of the Intermediate house, and kept 
comparatively dry, but during the summer the warmest end of the Odonto- 
glossum house is more suitable. O. grande, with others of these Mexican 
Odontoglossums, will have commenced to grow, and when new roots are 
seen to be pushing from the new growths they may have attention as 
regards repotting, should they require it. The usual Odontoglossum 
compost is suitable for them. O. citrosmum will require attention as 
regards repotting or basketing, whichever mode of culture is adopted, 
immediately the flower scapes are removed. Care must be taken in the 
application of water to the newly-potted plants until they become well- 
rooted, but when in full growth an abundant supply can be given. As soon 
as growth is complete they delight in a long dry rest, and only sufficient 
water to prevent shrivelling should be given. 
The Colombian Odontoglossums, thanks to our hybridists, now number 
so many delightful varieties that there are always some most beautiful 
plants in flower. 
DENDROBIUM PHALENopsis, having now started to grow, will quickly 
push numbers of new roots from the young growths, and before these make 
much progress any necessary potting should be attended to. The smallest 
receptacles possible should be used, as, during growth, they delight in 
abundance of water, and as they thrive best when the material dries quickly 
it is obvions that too much material should not be placed around their 
roots. A clean fibrous material, as used for other Dendrobiums, answers 
their requirements, and it should be made thoroughly firm around the base 
of the plants. D. bigibbum and D. Goldiei also succeeds under similar 
treatment, and should have attention in precisely the same manner. Other 
Dendrobiums that require similar attention at this season are the tall- 
growing D. Dalhousieanum, moschatum, fimbriatum, clavatum, &c. 
VANDA C@RULEA is an Orchid which everyone admires when in bloom, 
and one which many do not succeed with as they would wish. The present 
is a good time to repot any that may require it. They may be grown in a 
= of all live sphagnum moss, or equal parts of any clean. fibre mixed 
—_ it. This species resents being grown in too shady quarters, and 
should have plenty of light the whole year round. Only sufficient shade 
to prevent scorching should be used, and the plants must have a supply of 
