THE ORCHID REVIEW. 283 
baskets, suspended in the Odontoglossum house, and never allowed to 
become very dry. Galeandra nivalis grows best in warmth, and rested in 
the Cattleya house. G. Devoniana grows best in the last-named house; 
they flower as soon as growth is completed, after which they must be 
rested by withholding water. 
Dendrobium cymbidioides is a pretty little thing, and grows best in the 
Cattleya house, kept comparatively dry only when resting. D. speciosum 
does well with the Mexican Orchids, but should be rested in a cool, dry 
greenhouse. It is necessary to produce pseudobulbs of a large size before 
it blooms freely. Comparettias grow best suspended in the Cattleya house. 
Yellow thrip is troublesome to them, and soon kills them if not prevented, 
Camarotis purpurea require similar treatment to the warm Aérides. Cattleya 
maxima is better for a somewhat shady position. Ada aurantiaca grows 
best in the intermediate house; the temperature of the cool house causes 
spot. : 
Acinetas should be grown in baskets without crocks, as the flower 
spikes come through the bottom of the baskets. They are showy Orchids, 
but the bulbs must be a large size before they flower. They should be well 
rested during winter, for if kept too moist they are susceptible to black 
spot; they are best suited when occupying a warm part of the Cattleya 
house. Broughtonia sanguinea should be grown on a block in the warmest 
house. Brassias are a family of warm intermediate Orchids, and require 
the same treatment as Oncidiums. They are not by any means fashionable, 
and are not largely grown ; some few, however, such as B. maculata and 
B. verrucosa, are worth cultivating. Any of the white Lelia anceps which 
are not going to bloom, and are in a very bad condition, may be repotted 
at this season quite safely and with good results; the others will be best if 
left until spring. 
POLYPODIUM FIBRE VERSUS. PEAT. 
I have read with interest the notice on the use of Polypodium fibre for 
potting up Orchids at page 242 of the OrcHIp Review. I believe I was 
the first person to induce Mr. Outram, of the firm of Messrs. B. S. Williams 
and Son, to try it with Odontoglossums, but at the same time I would 
strongly advise any one using the same to experiment with some plants of 
small value, as it has in many cases proved disastrous to Cattleyas by 
breeding fungus and destroying their roots. Polypodium by itself seems 
to do very well, but it is when in juxtaposition with sphagnum that the 
mycelium of the fungus is produced. I think Mr. White, Sir Trevor 
Lawrence’s able grower, will bear me out in what I have said. I know it 
has been extensively tried at Burford, and I do not think it has altogether 
succeeded. Masdevallias were a dead failure in it, and so were Cypri- 
