Marcu, 1916.] THE ORCHID REVIEW. 69 
and as the Cypripediums pass out of bloom will produce a succession of 
flowers, which make Orchid collections interesting for several weeks. 
Bring them on slowly, as the flowers are finer and the new growths stronger 
than when unduly forced into flower. Plants of D. Phalznopsis and its 
varieties, with others of the same section, are developing new growths, and 
any specimens that require fresh rooting material should receive attention 
in this respect as soon as new roots appear at the base of the plants. This 
section delights in an abundance of heat and light, therefore should be 
placed in the lightest position possible, and in the warmest house. They 
are best grown in shallow pans, and a suitable compost is made up of three 
parts Ar or Osmunda fibre, and one part sphagnum moss. 
OncibiuMs of the macranthum section, if not pushing up flower spikes, 
may be repotted, should the compost be in a decomposed condition. 
Although these soft-rooted species soon lose their roots in a close, hard 
compost, a loose, spongy material must be avoided. A similar compost to 
that used for Odontoglossums will answer their requirements. There are 
other Oncidiums of a different nature altogether, being quite small growers, 
but which produce beautiful panicles of bloom. _ I refer to O. pulchellum, 
O. cheirophorum and others, which produced their flowers during the 
winter months. These small plants are best grown suspended, and they 
may now be afforded fresh potting material, should they be in need of it. 
They must be watered with extreme care, and succeed in the Cool house. 
O. tigrinum, now at rest in the Cool house, should be kept on the dry side, 
but the pseudobulbs must not be allowed to shrivel. The exhaustion of 
plants by shrivelling whilst at rest is very detrimental, and in many cases 
they rarely recover. 
OpontToGLossuMs.—The present is a suitable time to afford increased 
‘root-room to cool Orchids which are not flowering, but Odontoglossums 
should not be disturbed unless it is absolutely necessary. Odontoglossums 
are now so numerous, and the parentage so varied, that it is a most 
difficult problem to state the exact season for repotting. The autumn 
months, however, are much the best in which to undertake this operation, 
though there are always some plants in bloom, and as those in that state 
cannot possibly be done then, they will require it at this season. Plants 
which are potted now must be watered with care until they are well rooted, 
then they may have water whenever they become dry. Odontoglossums 
that are pushing up their flower spikes should be looked over every day for 
slugs, and the spikes when long enough neatly looped up to small stakes. 
PHALZNoPsIs that are commencing to make new roots may have 
attention as regards new rooting material should they be in need of it. 
Although not grown to the extent they once were, a house of healthy 
established plants in bloom forms a delightful spectacle, and will repay the 
