May, 1913 | THE ORCHID REVIEW. 149 
push out, as there is a danger of them getting damaged if left to a later 
period. When in bloom the plants may be moved to drier and slightly 
cooler quarters, which will be the means of the flowers lasting longer in 
perfection and be more accessible to those who object to the humidity and 
heat of the growing houses. The potting of the plants, as they go out of 
flower and begin to push roots at the base of the pseudobulbs, should have 
attention whenever it becomes necessary. 
CyYPRIPEDIUMS of the winter-flowering section which have not been 
repotted should be done at once if they require it, as, if left too late, they 
fail to produce flowers satisfactorily the following season. The plants this 
season appear to me to carry their flowers much later than usual, as at the 
time of writing many are even in full bloom. The summer-flowering 
section, such as C. Lawrenceanum, niveum, Godefroye, bellatulum,. 
Curtisii, and their numerous hybrids will be better cleaned and placed in 
their flowering quarters, where no water from the syringe may reach them. 
CYMBIDIUMS include some of the most easily-cultivated and stately 
Orchids. Amongst the best known and most useful are C. Lowianum and its 
variety concolor, C.eburneum, erythrostylum, giganteum, insigne, grandi- 
florum, Tracyanum, and numerous hybrids. They should not be disturbed at 
the roots, until really necessary, as the plants bloom more freely and produce: 
finer flowers when the pots are well filled with: roots. Those plants that 
have not sufficient room to develop the present season’s growth should be 
Tepotted, also any in which the compost has become decomposed. In potting 
plants of this character it is often a difficult matter to know what to do. 
with the roots, as with healthy specimens they are often one solid mass. 
Whenever possible it is best to disentangle them without breaking them, 
picking out as much as possible of the old decayed compost with a pointed 
Stick. The pots should be well drained, and of a larger size than is general, 
and what would be considered a large shift in most cases is in this one not 
unusual. A similar compost to that used for the green-leaved Cypripediuu:s,. 
with slightly more loam fibre, will answer their requirement, and the plants 
may be potted moderately firmly. Extreme caution is necessary in the 
application of water to the newly-potted plants until the roots get fairly 
hold of the compost. The best time to repot is whenever the half-made 
Pseudobulbs are about to produce new roots. These Cymbidiums grow best 
in a shady position in a cool Intermediate house, with plenty of fresh air. 
ZYGOPETALUM with its allies, comprising Bollea, Pescatorea, 
Warscewiczella, Huntleya, Promeneza, Batemannia, and Kefersteinia, form 
fee interesting little group. The majority do not resemble Zygopetalum 
in habit of growth, and, with the exception of Promenza, possess no 
Pseudobulbs. Z. Mackayi, the best known and the most generally grown, 
May be regarded as a typical example. These plants delight in a shady 
