248 THE ORCHID REVIEW. 
hampers our endeavours after success with this species. The above, with 
D. crassinode, nobile, crepidatum, crystallinum, the hybrid: Ainsworth, 
Leechianum, splendidissimum, and other more or less well-known kinds of a 
similar character, should be gradually inured to a drier and cooler 
atmosphere, attended with a gradual lessening of the supply of water at the 
root. D. aureum produces better results when kept in a warm house, though — 
in other respects it should be treated as other deciduous species, varieties, 
and hybrids ; so also should those of the thyrsiflorum section, together with 
D. Parishii, chrysotoxum, suavissimum, superbum, X_ rhodostoma, &e. 
The Australian species, D. speciosum, usually makes its growths at the end of 
July or beginning of August, and until then very little water at the root is 
needed. It isa plant that appreciates the full benefit of the sun, and for 
this and other cogent reasons should be grown with the Mexican Leelias. 
The less disturbance at the root it has the better it will thrive, so that, 
excepting when absolutely necessary, plants of the above should not be 
re-potted. I believe it grows on almost bare rocks in its native habitat, 
which seems to point to the fact that little potting material is needed for it 
to root in. Plenty of drainage, and a few good lumps of the best rooting 
medium should be used, and the operation, when decided upon, should be 
performed when the new breaks have attained a few inches in length. 
The deciduous Calanthes should now be growing and rooting freely, and 
should not lack a good supply of water, to which occasionally should be 
added a small proportion of liquid manure, obtained in as clear condition as 
possible, so that no sediment is left on the surface of the soil to obstruct the 
air passing through, or misleading one as to its condition. If the plants 
have done well, and filled their pots with roots, a top dressing may be given 
them. As plants of Catasetum, Cycnoches, and Mormodes finish up their 
bulbs, the supply of water at the root should be gradually decreased, when 
by the time the leaves have fallen off next to none will be required. The 
“ Dove Orchid” flowers this month, but, generally speaking, this event is 
not always a dead certainty, for even when it is grown well, it does not 
produce flowers annually. My opinion is that it requires a long and complete 
rest after it has finished up its bulbs, and even when it is unfolding its large 
plicate leaves little water is needed until root action takes place. Then it 
should have a moist, humid atmosphere and a fair amount of sunlight, such 
as may be obtained where the Dendrobiums are grown, though when 
spraying the latter it is the wisest plan not to direct any on to the 
undeveloped leaves of the plants under notice. P. aspersa in its mode of 
flowering differs from the above, as the flowers are produced on a short semi- 
pendant scape. The treatment required, however, is identical with that 
afforded the other, _ je 
Coryanthes is a ge 
: s the members of which are seldom grown 
