APRIL, 1912.] THE ORCHID REVIEW. 115 
OponToGLossuMs.—Any plants of Odontoglossum crispum or its 
hybrids which require repotting, from any cause, may have attention 
when their young growths are a few inches long, and about to push roots. 
Plants repotted at this season must have extra attention as regards 
watering and shading. O. citrosmum, having been resting in the cool 
Intermediate house, will now be pushing up its flower spikes from the 
centre of its young growths, and the plants so doing may be given more 
water, but no water must be allowed to enter the young growth, or much 
harm will accrue. 
ONCIDIUMS.—O. varicosum, and other late-flowering species, will now 
be starting into growth, and when young roots are observed to be pushing 
from their base fresh rooting material should be given to any that may 
require it. They will succeed in the same compost as Odontoglossums, but 
a more liberal supply of half-decayed oak leaves may be given to them. 
O. Marshallianum, O. concolor and others now developing flower spikes 
require a moderate supply of water at the roots. Oncidiums, when in full 
growth, and nicely rooted in the compost, delight in abundance of moisture 
at the root and in the atmosphere. Like all Orchids, they must be watered 
with care, until the new roots are well established in the compost. 
AERIDES, SACCOLABIUMS, and ANGR#CUMS that require new compost 
should be attended to at once, for, with the increased amount of daylight 
and sun heat, they will rapidly push forth new roots, and as the growing 
points of these are very tender, and easily broken, it is advisable to get 
them done before there is any danger of this occurring. Place them in 
well-drained pots, using a compost of equal portions of osmunda fibre and 
sphagnum moss. 
RENANTHERA IMSCHOOTIANA, now pushing up its flower spikes, may 
have a more liberal supply of water to the roots. This plant succeeds 
best when grown near the glass in an Intermediate house, and delights in a 
supply of fresh air at all times. 
MILTONIA VEXILLARIA, now pushing up its flower spikes, must not be 
allowed to suffer for want of water at the root, neither should the plants 
receive it in such quantities as to destroy the young roots pushing from the 
base of the half-made pseudobulb. Any flower spikes entrapped between 
the leaves, by the leaves adhering to each other, should be carefully 
liberated, or else they will become distorted, and, in many cases, break 
themselves in two. M. Bleuana and other hybrids of M. vexillaria have 
rather an irregular flowering period, and where a quantity of plants are 
grown there will nearly always be some in flower, or showing for flower, 
The conditions advised for M. vexillaria will answer their requirements, 
with the exception that they like a little more warmth. Thrip and other 
pests, which are very persistent in attacking these plants at this season of 
