238 THE ORCHID REVIEW. [Nov.-Dxc., 1918. 
thoroughly ripening the pseudobulbs. The cool growing members of the 
nigro-hirsute section, such as’ D. infundibulum and D. Jamesianum, which 
thrive best during the summer months in the Cool house, will at this season 
enjoy the warmer quarters of the Intermediate house, and being evergreen 
must not be allowed to suffer for want of water. Other evergreen 
Dendrobiums, which are now resting, should be carefully watched that they 
do not suffer for. want of water at the roots. Rest is essential to plant life, 
especially if the best results are to be attained. 
ODONTOGLOssuMs.—Plants of O. Uroskinneri, O. bictoniense, O. 
grande, and other Mexican species, require a slightly higher temperature 
during the winter months than the Columbian species, therefore it is 
advisable to remove them to a position where they may enjoy the benefit of 
a few degrees more warmth. O. citrosmum, having now completed its 
pseudobulbs, will only require water at long intervals. 
OncipiuMs.—The late-flowering species of this large genus, will also 
benefit by being placed where they may receive a little more heat than that 
of the Cool house, in which they have been grown during the summer 
months. This enables the flowers to unfold easily, and the plants start 
stronger and more freely into growth in the spring, than when allowed to 
remain in their cool quarters. 
PLEIONES.—The delightful Indian Crocuses, P. maculata, P. lagenaria, 
and P. Wallichiana, as they pass out of bloom, may be repotted. They 
should be grown in a similar compost to the green-leaved Cypripediumss 
but succeed best grown in shallow pans, suspended in a damp position 
in the Cool Intermediate house. 
ZYGOPETALUM Mackayl, the best known species of the genus, is now 
sending up strong spikes of bloom, which on account of their colour are 
valuable at a season when flowers are scarce. These plants flower froma 
partially-made growth, so when their flowering period is over, any necessary — 
repotting should be undertaken. Being a free-rooting, strong-growing 
species, plenty of pot room and a good depth of compost is required. A 
mixture of good turfy loam and rough fibrous peat, with sufficient crocks to 
keep the soil sweet and open, makes a suitable compost. The pots should 
be well drained, the compost made moderately firm, and the plants watered 
with extreme care until the roots have freely entered the new material. 
EPIDENDRUM VITELLINUM.—Both the spring and autumn flowering 
varieties of this desirable Orchid deserve to be grown in quantity, and when 
we return to normal conditions no doubt Orchid importers will try - 
satisfy our requirements again. The plants flower, and likewise make their 
growths, at different periods, therefore will require attention as regards 
repotting at different times. Whilst making growth the plants may be 
freely supplied with water, if well rooted, and after producing their flowers 
