May, 1916.] THE ORCHID REVIEW. 125 
of the newly-potted plants should be kept on the dry side until the new 
roots have freely entered the new material. 
CyPRIPEDIUMS.—Late-flowering plants of the winter-blooming section 
that are in need of new material at the roots should have immediate 
attention, as the flowers are removed, for if left to a later period they often 
fail to root in a satisfactory manner. The summer-flowering section, which 
comprises such species as C. Lawrenceanum, Curtisii, niveum, Godefroye, 
bellatulum, &c., with their numerous hybrids, will be pushing up their 
flower spikes, and should be placed in their flowering quarters, where no 
water from the syringe may reach them. 
DENDRoBIUMS.—Plants of D. thyrsiflorum, densiflorum, Farmeri, 
chrysotoxum, fimbriatum, and others of the racemose section will now be 
showing their flower buds, and should be afforded more water at the roots 
and placed in a slightly higher temperature, which will assist them to 
develop and expand their flowers. D. formosum and D. Phalenopsis will 
now be pushing new growths and roots, and may have new compost 
afforded them should they be in need of it. It is advisable to grow these 
plants in as small receptacles as possible, as, being feeble rooters, they 
make more progress when the compost dries quickly. Any clean fibre, 
mixed with an equal portion of sphagnum moss, makes a suitable compost. 
These plants revel in heat, light, and moisture whilst making their growths, 
with a long resting season after flowering. D. bigibbum, superbiens, 
_ Goldei, and others of the Australian and New Guinea Dendrobiums, 
succeed under the same conditions, but their requirements vary according 
‘to their season of flowering. D. infundibulum, Jamesianum, and others of 
the Nigro-hirsute section succeed in a cool Intermediate temperature. 
OponTocLossums.—Such plants as O. grande, Insleayi, and Williams- 
ianum, when their growths are fairly started, and before they push roots 
Should, if necessary, be repotted. They require a slightly higher 
temperature than the Cool house. Plants of O. Rossii and its hybrids, 
with O, Cervantesii, O. Humeanum, and O. CErstedii, that have recently 
Passed out of flower, may also have attention when their young growths 
attain the desired condition. They thrive when grown in shallow pans, 
Suspended close to the roof glass of the Cool house. These small plants 
easily suffer from an excess of water at the roots during their resting season. 
SOPHRONITIS GRANDIFLORA is another inmate of the Cool house which 
may now have attention as regards repotting. Plenty of drainage must be 
Provided, and the usual Cattleya compost is the most suitable. 
SOBRALIAS, and other terrestrial Orchids that are showing their flower 
Spikes, and others that are in full growth, and their pots full of roots, will 
benefit by an occasional watering with weak liquid manure. This must be 
applied in a weak state, or it may do harm, even to strong terrestrial Orchids. 
