236 THE ORCHID REVIEW. [Aucust, 1914. 
injured. Thrip is sometimes troublesome, but an occasional spraying with 
a good liquid insecticide will hold them in check, or the plants may be 
dipped in a similar solution. 
C@LOGYNE PANDURATA.— This Coelogyne is not a difficult plant to grow 
if it is provided with a hot moist atmosphere during its period of activity, 
and a few degrees less warmth when at rest. The pseudobulbs are 
produced at intervals on a stout rhizome, and for this reason a long teak- 
wood basket proves the best receptacle. The general compost should be 
used, and when necessary, new soil can be given a few weeks after the 
spikes are removed, or directly root action is evident. 
PERISTERIA ELATA is a strong growing plant which will now be throwing 
up its flower spikes. Where they are in a pot-bound condition, an 
application of weak liquid cow manure will be of considerable benefit, but 
it must be discontinued when the first flower opens. Some good fibrous 
loam should be added to the usual fibres when any repotting takes place. 
ONcIDIUM BICALLosuUM is a fine Orchid, and may be repotted at this 
season if the compost is decayed or a larger receptacle is required. A 
loose or retentive rooting medium is not conducive to the production of 
strong spikes with flowers of lasting quality, so osmunda and polypodium 
fibre should be used in equal parts, with just a sprinkling of sphagnum 
moss. Make the soil fairly firm and afford water sparingly till the roots 
are well away. This Oncidium may be grown either in the Cattleya 
or Intermediate house. 
RENANTHERA IMSCHOOTIANA.—This is one of the many Orchids that 8 
often represented in collections by several examples, and rightly so, inf 2 
scapes of bright vermilion flowers are always admired. As the flowering 
period has now passed, fresh roots will be pushing out from the stems, and 
the compost should be renewed if at all decayed. This should consist of 
osmunda fibre, good quality peat, and sphagnum moss in equal parts, while 
the last layer should be fresh sphagnum, free from weeds and other rubbis i 
Where the plants have become leggy, and the stems leafless, the top portion 
may be severed immediately below new roots and potted up, but for @ ie 
weeks a little extra shade will be necessary. The lower half may “break, 
and form two or more growths, if kept slightly on the dry side. 
Imschootiana has been tried in several houses, but the best results h 
been obtained at the cool end of the Cattleya or Intermediate hous 
position near the glass is essential. 
MILTONIA VEXILLARIA AND ITS VARIETIES.—These beaut 
may now be overhauled, and given new compost where such is necessaty: 
A suitable mixture consists of osmunda or polypodium fibre, good “ey 
peat, and sphagnum moss in equal parts, while some growers hk 
sprinkling of partly-decayed oak or beech leaves with beneficial rest oa 
ave 
ifal Orchids 
