APRIL, Igtt.] THE ORCHID REVIEW. 125 
THE INTERNATIONAL HORTICULTURAL EXHIBITION, 
THE first provisional Schedule of the great International Horticultural 
Exhibition to be held in the grounds of the Royal Hospital, Chelsea, from 
May 22nd to 30th, 1912, has been issued, and contains many classes devoted 
to Orchids. In the division devoted to new plants are three open classes 
for anew species of Orchid, a new variety, and a new hybrid, which have 
not been previously exhibited. The section devoted to Orchids contains 
29 classes, all but eight of which are open, and comprise classes for 12 and 
25 Cattleyas, Lelias, and Brassavolas, and their hybrids, also for a group 
of the same not exceeding 100 square feet, the last being repeated in a class 
limited to whites or whites with coloured lips. Other classes for groups of 
100 feet square are set apart for Cypripediums, Miltonias, Vandas and 
allied genera, and for ornamental-leaved Orchids, the latter not necessarily 
in flower, while Disas and allies, and Masdevallias are limited to 50 feet. 
There are also classes for 100 Orchids, for 12, for 6, for one specimen 
Orchid, for British Orchids, and for Hardy terrestrial Orchids, British 
excluded. The larger classes comprise Dendrobiums, Odontoglossum 
species and varieties, and Odontoglossum hybrids, each not exceeding 200. 
square feet, also Orchids of Botanical interest, not necessarily in flower,. 
220 feet, and Cochlioda hybrids, without limit. Four classes are in duplicate 
for Amateurs and Nurserymen, namely the best and most varied group, not. 
exceeding 500 feet, the best group of species and varieties, not exceeding 
200 feet, a similar class for hybrids, and the best 50 Orchids in not less than 
25 species, varieties and hybrids. Further particulars will appear later, 
and we anticipate a magnificent display on this occasion. 
ODONTOGLOSSUMS FROM WALTON GRANGE. 
SoME interesting seedling Odontoglossums are sent from the collection of 
W. Thompson, Esq., Walton Grange, Stone, by Mr. Stevens. There are 
two forms of O. Clytie (Edwardii X Pescatorei), from the same seed-pod,. 
one of them, from the plant shown at the R.H.S. meeting on January 3:st, 
having a lilac-coloured ground heavily biotched with dark purple, the other 
rather larger and having more solid purple blotches. This is said to open 
with a white ground, afterwards turning lilac. One from O. Pescatorei X 
Ossulstonii has most of the Pescatorei shape, and has very small purple 
Spots on the segments. A form of O. amabile (crispum X spectabile), has. 
yellowish white ground, and copious light crimson-coloured markings, and. 
should develop into a very beautiful thing. A stray seedling has light 
yellow ground colour, and pretty similar stripes and markings, so may be 
from the same cross. O. Pescatorei x Andersonianum is most like a light 
form of the latter in shape and markings, but has a somewhat pandurate 
