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132 ‘THE ORCHID REVIEW. 
Some of these hardy terrestrial species are admirably adapted for pot 
culture, and one cannot help being struck with the beauty of the North 
American Cypripediums when grown in this way. C. pubescens and C. 
spectabile are now often met with, and C. montanum occasionally, and they 
introduce a very pleasing variety into the collection. ‘The Siberian C. 
macranthum, for some reason, is less frequently seen, though its large 
purple flowers are particularly attractive. Several other species are also 
cultivated in a few collections, and one cannot help wishing that such 
interesting plants were more frequently met with. 
ARGUS. 
NOVELTIES. 
CATTLEYA X VENOSA, Rolfe.—Some time ago a very distinct Cattleya 
flowered in the establishment of Messrs. Linden, L’Horticulture Inter- 
nationale, Brussels,which might almost be described as C. Harrisonize with the 
lip of C. Forbesii, and is evidently a natural hybrid between them. The 
sepals and petals are like those of the former, both in shape and colour, 
while the lip has the characteristic markings and verrucose disc of C. 
Forbesii, with the shape slightly modified and the front lobe strongly 
flushed with rosy purple. It occupies the same intermediate position 
between the two species named that C. x Krameri occupies between C. 
Forbesii and C. intermedia, and the origin of that hybrid has fortunately 
been proved experimentally. The three species in question are all known 
to occur in the Rio district, and it is now evident that the two former also 
grow together. It is very curious how these natural hybrids keep turning 
up among the importations which are continually being brought over. 
ODoNTOGLOssuM Rossu, Lindl., var. IMMACULATUM, Rolfe.—A very 
distinct and remarkable variety of Odontoglossum Rossii has appeared in the 
collection of O. O. Wrigley, Esq., Bridge Hall, Bury, in which every trace 
of spotting has vanished from the flower, leaving the petals and lip white 
and the sepals pale pink. Last year it presented the same character, 
showing that it is no accidental peculiarity. Mr. Wrigley states that he has 
only two small plants, and never met with an albino before among the many 
hundreds he has seen. Nor do we ever remember to have seen one. 
Although identical in shape, its peculiar colour gives it quite a different 
appearance from the ordinary form. So distinct and pretty a plant will no 
doubt be taken care of, but a long time must elapse before the stock can be 
multiplied to any great extent. 
