APRIL, 1917.] THE ORCHID REVIEW. 87 
plant to remain in a decomposed material, and plants repotted between 
seasons require extra attention as regards watering and shading. Odonto- 
glossum citrosmum now pushing up flower spikes may have the water supply 
slightly increased. 
SACCOLABIUMS, AERIDES, and ANGR&CUMS are Old World Orchids 
that may require new compost, and should be attended to at once, for, with 
the increased amount of daylight and sun heat, they will push new roots 
rapidly, and the new roots, being very succulent, are easily broken, so that 
it is advisable to get them done before the danger occurs. Sphagnum moss 
_and fibre makes a suitable compost, and the majority thrive in the warmest 
house. 
RENANTHERA IMSCHOOTIANA is now pushing up its flower spikes, and 
may receive a more liberal supply of water to the roots. This plant, like 
many other members of the Vanda family, delights in plenty of light, but 
not direct sunshine, and a supply of fresh air at all times. Whilst making 
its growth a position close to the glass in an Intermediate house will 
answer its requirements. 
CaTASETUMS, CYCNOCHEs, and MorMOopEsS are quaint and distinct 
Orchids which are not often seen, but, owing to their remarkable and 
interesting flowers they deserve more extended cultivation. After a long 
decided winter’s rest they are now commencing to grow, and must, there- 
fore be no longer kept under resting treatment. Immediately young 
growths are seen to be pushing from the base of the pseudobulbs they 
should be repotted. They are best done annually, and a suitable compost 
is the one used for Cattleyas. The pots must be well drained, the plants 
potted moderately firmly, and the heavy pseudobulbs made secure to a 
stake to prevent them from rocking about. After repotting, water must be 
applied with extreme caution until the roots and young growth get fairly 
growing. . Whilst making their growth they require a position close to the 
glass in the warmest house, and they should be rested in a house with 
Dendrobiums. 
GENERAL REMARKS.—Enthusiastic Orchid growers will derive much 
pleasure during the present month in observing how quickly a number of 
different species respond to the increase of light and sun-heat. It is 
remarkable how nature responds to the warmth of spring, and, as the 
growing season for most of the plants has commenced, the essential 
conditions for their future welfare must be regularly and systematically 
carried out. Work will come cn apace during the present month, and 
what with the potting, cleaning, and other matters which require attention, 
our hands will find plenty todo. Insect pests must be carefully watched 
for, as they do irreparable damage at this season, and if leaves of plants are 
to carry out their proper functions they must be kept clean and healthy. 
