“FEBRUARY, 1917] THE ORCHID REVIEW. 35 
and are placed into position properly in the receptacles, no harm 
will accrue, whether peat or Ar fibre predominates. Each class of, plant 
has its own individuality, and it should be the cultivator’s aim to master 
the details necessary to grow them satisfactorily. 
CATTLEYAS AND ALLIES.—Cattleyas, Leliocattleyas, Brassocattleyas, 
and others of more complex parentage, have attained such numbers, and 
show such variety of colour, that they are now indispensable, in fact they 
are the most popular of all Orchids. Plants that have produced flowers 
during the winter months may be repotted as soon as new roots are 
observed to be pushing from the base of the last-made pseudobulb. A 
clean open material will answer their requirements, and the plants should 
be potted firmly. The winter-flowering species, of which Cattleya Triane, 
Percivaliana, and chocoensis are the most useful, may have the same 
attention when their flowering period is passed. Many hybrids in this 
section also produce flowers at this season, and, in order to produce their 
flowers, in perfection, it is advisable to give them all the light possible, and 
sufficient water to keep the compost moist until the flowers are fully 
developed, afterwards keeping them on the dry side until growth recom- 
mences. C. Warneri, Warscewiczii (gigas), maxima, Schilleriana, Lelia 
Boothiana, crispa, and many hybrids of which L. purpurata is one parent, 
have commenced to grow, and may have the water supply increased, taking 
care that the compost becomes dry between each operation. 
Mexican Laztias, which have passed out of flower and commenced to 
push new roots from the base of the last-made pseudobulbs, should have 
attention as regards repotting, should it be necessary. Coarse osmunda 
fibre and Ar fibre, from which all the dust or earthy matter has been 
removed, makes a suitable compost, but as the former is almost unattain- 
able, we must rely on the latter alone. The material should be made quite 
firm, especially around the base of» the rhizome of the plant. After 
repotting, water must be carefully administered to the compost, but the 
surroundings should be kept moist to encourage root activity. 
DeENprRoBIUMS of the nobile section, with its many hybrids, may be 
brought on gradually, as suggested last month, but no undue forcing should 
be attempted. 
CYPRIPEDIUMS of the insigne section that are in need of new rooting 
material should have attention as soon as they pass out of flower. They 
are indispensable for producing flowers during the dullest months of the 
year, and are, therefore, highly appreciated. There are so many varieties 
of these delightful plants of exceptional merit that it is impossible to 
enumerate them in the space at’imy disposal. They may all be repotted 
in the same manner as the species, and a suitable compost consists of equal 
parts of peat fibre, Ar fibre, and sphagnum moss, with some clean loam 
