Marcu, 1918-] THE ORCHID REVIEW 61 
osmunda fibre we. have not much choice of material as regards:making a 
suitable compost for these plants. Well cleaned Ar fibre, with a few. broken 
leaves, and sphagnum moss mixed with it, will be found quite satisfactory. 
The plants must be potted firmly, and be watered with extreme care until 
the new roots are pushing quite freely. -The numerous’ hybrids in this 
large family may also have attention wherever necessary. ; . 
Decipvous OrcHIps.—Calanthes, Thunias, Cyrtopodiums, and other 
deciduous plants will soon need repotting. Good fibrous loam is the chief 
element of compost for these plants. « Personally,:I do’ not advise. a rich 
rooting medium, as disease is often attributable to the use of too rich a 
compost. The compost for all plants which delight in a high temperature 
should be placed in a warm place so that itcan get thoroughly warmed 
through before being used, as these plants easily’suffer if placed in a cold 
compost. Whilst in growth these plants require: plenty of: heat and 
moisture in the atmosphere, but until well rooted, must have water applied 
to the compost with caution. 
Puatus.—Although these plants are not deciduous, they succeed in a 
similar compost to the preceding, and under the same cultural conditions, 
with the exception that they require slightly more air. Any that are in 
need of new rooting material should have attention just before the new 
growths commence to push roots. 
SPATHOGLOTTIS.—The different species and’ hybrids may be .treated in 
precisely the same manner as Phaius. When well rooted, copious waterings 
until growth is completed are necessary, whilst an occasionial watering with 
liquid. manure will be beneficial. These remarks apply, also, to the - 
different species of Microstylis. : 
DENDROBIUMS of the deciduous section are developing their flowers 
quickly under the influence of increased light and heat, and when well 
grown few plants make a brighter display. Until their flowers have faded 
the plants may have water whenever they become dry, when any requiring 
more room or new material may have attention. D. Phalenopsis and 
Similar species, which delight in a hot humid atmosphere whilst making 
their growth, may have attention when the new growths have attained the 
height of three or four inches, and are about to push new roots. A clean 
fibrous compost made up of equal portions of Ai fibre and sphagnum moss 
answers their requirements. They should be grown in small receptacles, 
and suspended in the hottest and brightest position in the warmest house. 
Cypripepiums.—Continue to repot the later-flowering section of these 
useful plants as they pass out of bloom. The sooner the. repotting is 
completed the better, for the plants quickly re-establish themselves at this 
Season, and make stronger growths than when left to a later period. 
PLEIONEs.—Such sorts as P. maculata, lagenaria, and Wallichiana are 
