76 THE ORCHID REVIEW. [May-JUNE, 1920. 
infundibulum and D. Jamesianum may also be given attention if a larger 
receptacle is required, or the compost is in a decayed or sour state. The 
evergreen section commences to grow at this season, and includes D. 
Farmeri, densiflorum, and the beautiful D. thyrsiflorum. Annual dis- 
turbance at the root is not advised for these, but when the operation is 
necessary this is the best time to carry itout. This section should be potted 
firmly, the mixture consisting of osmunda fibre, Ar fibre, and sphagnum 
moss in equal parts. The deciduous section, if not already done, may also 
have attention, when the new growths attain a few inches in length and are 
about to push forth new roots. A clean, open compost, made up of AI 
fibre and sphagnum moss in equal parts, answers their requirements. 
While in active growth, a light position in a warm house should be chosen; 
but when the pseudobulbs are fully developed, they will take a season of 
rest in a slightly cooler and drier atmosphere. 
_ CYMBIDIUMS are at the present time amongst the most popular of 
Orchids. As decorative plants they have few rivals, and as cut flowers they 
are most attractive. C. Lowianum, insigne, eburneum, and the many 
hybrids, will now be over, and potting may at once be taken in hand. 
Their chief requirement as regards compost is a nice open material in which 
good fibrous loam predominates. When well rooted, and in active growth, 
they require plenty of water, but should be kept rather on the dry side 
during the dull days of winter, and after repotting, until the new roots enter 
freely the new material. 
CYFE C. niveum, bellatulum, concolor, and Godefroyz will 
now be passing out of bloom, and if the compost has become loose, or has 
got into a sour state, repotting should be done. Speaking generally, these 
are difficult Orchids to keep in a vigorous condition, but I believe most 
failures can be attributed to keeping them much too dry during their season 
of growth. Potted in the usual Cypripedium compost, intermixed with a 
few small pieces-of soft broken bricks, and made moderately firm they thrive 
admirably. Ordinary pots, well drained, make thc best receptacles. The 
warm end of the Cattleya house, elevated up to the glass, out of the. way of 
the syringe or sprayer, is an ideal place for them. Small seedling Cypri- 
pediums should be pricked off or potted into small pots as soon as they. have 
attained sufficient size and strength. 
Oncipiums. — O. macranthum, serratum, undulatum, superbiens, 
monachicum, and zebrinum, as soon as they have finished flowering, also 
any that are not flowering this year, will be forward enough in growth to 
enable repotting to be done. On account of the length of time which the 
spikes are in developing, it is most essential that the plants should be in 
robust health, and that the compost is in good condition before allowing 
them to carry spikes. Weak'spikes are not worth attention, and should be 
