270 THE ORCHID REVIEW. (NoveMBER, 1916. 
the health of the plants will be impaired, and the proper development of 
the flower spikes, now pushing up, will be hindered. Care should be taken 
that the water applied to these tender succulent plants is of the same 
temperature as the house in which they are grown. 
SACCOLABIUMS AND ALLIES.—Although these old-world Orchids are not 
cultivated to the same extent as formerly, they are most desirable subjects. 
They will now have completed their growths, and, as root action ceases, 
the green tips of the roots become sealed over. When this occurs, careful 
waterings are necessary, in fact, only sufficient water will be required for 
some little time to keep the leaves plump and in a normal condition. 
Some species of Saccolabium and Aérides succeed in the warmest house ; 
others delight in an intermediate temperature. 
GENERAL REMARKS.—The chief points to be observed during the 
present month are the provision of a suitable atmosphere in the different 
houses, and the war against insect pests. Excessive fluctuations of 
temperature are injurious, and may even be fatal to some plants, so that 
the aim should be to maintain the required temperatures in each depart- 
ment, damping down just sufficient to give the required amount of moisture 
in the atmosphere, and giving a little air whenever the outside conditions 
permit. As regards insect pests, the thing is to destroy them whenever 
found, but the winter months afford a suitable opportunity for a general 
cleaning of the plants, so that, with the return of spring, they may resume 
their activity unimpaired. There may be difficulties in many establish- 
ments, owing to the great shortage of labour, but with perseverance these 
may generally be overcome. 
CATTLEYA CORONA ALBA.—A flower of the beautiful Cattleya Corona 
alba (Mantinii x Hardyana), which received an Award of Merit from the 
Manchester Orchid Society on October rgth last, is sent by Mr. E. W- 
Thompson, gardener to Phillip Smith, Esq., Haddon House, Ashton-on- 
Mersey. It is fairly intermediate in shape, and has pure white sepals and 
petals, and a coloured lip, the apex and a narrow margin round the side 
lobes being crimson-purple, and the very broad central area yellow. Mr. 
Thompson remarks: “It is a plant that we have just purchased in flower, 
and I think it is unique. Weare told that it has flowered out of a batch 
of coloured varieties, and is the only white one to flower yet. I have never 
heard of a Bowringiana hybrid, either primary or secondary, with white 
sepals and petals.” It would be interasting to know whether C. Hardyana 
or C. H. alba was the pollen parent; if the former it would show how 
white forms may sometimes arise; if the latter the coloured seedlings 
would illustrate a phase of reversion, for of course the C. Mantinii parent 
was purple. 
