196 THE ORCHID REVIEW. [JuLy, 1922 
agree that the attractiveness of a Dendrobium lies not so much in a single 
flower, but in the general effect of a number of flowers gracefully arranged 
on several bulbs. These results are only obtained by giving the plants 
appropriate treatment through the whole year. From the time when 
- growth commences in the early part of the summer, every encouragement 
should be given to the plants to make vigorous bulbs. A fairly light 
position in a warm house is essential; many fine plants have been grown in 
vineries. The temperature should be well maintained, and on all bright 
days the plants may be syringed with tepid water. 
About the middle of August, the new bulbs will show signs of completing 
their season’s growth, and it is then advisable to slightly reduce the 
moisture, and at the same time to gradually increase the ventilation. By 
degrees the shading on the roof is lessened, until after a few weeks it will 
only be required for a couple of hours during the middle of the day. If 
these conditions are properly attended to the new bulbs will gradually 
assume a ripe golden colour. But while they must on no account be 
allowed to shrivel through the water supply being unduly restricted, care 
must be taken to prevent the compost remaining saturated, for a cold and 
non-porous condition wi!l rapidly bring about disastrous results if allowed 
to continue. A lower temperature and drier conditions will maintain 4 
state of rest until the end of the year, when the production of flower buds 
will indicate that a few degrees more heat, say about 55 degrs., and slightly 
more water are needed. 
WarRREA TRICOLOR.—First cultivated by Messrs. Loddiges in 1829. T his 
species appears to have been but little known until it was imported from Santa 
Martha, in Northern Colombia, by Purdie. It flowered at Kew in 1545. 
OponToGLossuM LuGaNno.—This novelty has flowered in the collection 
of Clive Cookson, Esq., Nether Warden, Hexham, whose Orchid grower, Mr. 
Stables, was formerly with de Barri Crawshay, Esq., Sevenoaks, where the 
cross was made and the seedlings raised. The parents are luteopurpureum 
Vuylstekeanum and hellemense Cooksoniz, and the handsome flowers are 
of bright golden-yellow colour with rich red-brown markings, which take 
the form on the sepals of bold blotches, and on the petals of about ten large 
spots. The blotch of similar colour on the centre of the labellum has the 
varnished appearance that is characteristic of O. triumphans, which is 
contained in the hellemense parentage. O. hellemense Cooksoniz. 1s # 
distinct variety with almost all yellow flowers, and when making use of this 
with the albino variety of luteopurpureum known as Vuylstekeanum it was 
hoped that the resulting flowers would be entirely yellow. But by the above 
description it will be seen that in the blotched and spotted areas reversion 
to the typical colour has taken place. 
