178 THE ORCHID REVIEW. (AucustT, 1917. 
1880, I named it in a letter addressed to my excellent friend, Prof. H. G. 
Reichenbach, in his honour, as a mark of warm admiration, Odontoglossum 
Reichenbachianum. 
The characteristic features of the plant, which ERE sat me in this 
direction, were: the far smaller but tougher development of all the organs 
of the plant ; the branching out. of the flower-spikes ; the great profusion 
with which the flowers are produced (up to fifty-four on a spike were 
observed) ; the somewhat narrow but long perigone; and, par excellence, 
the large, rather broad, and always more or less panduriform labellum. 
The variations of colour, as well as form and size of the flowers, are just as 
great with this species as with O. crispum. Five such varieties were 
specially observed and prepared for the herbarium; these were evidently 
hybrids between O. crispum Lehmannii and O. atropurpureum, and proved 
at first sight so distinct in their general structures that I nearly felt 
inclined to consider them as species. 
Lehmann’s idea of the distinctness of this plant seems to have been 
subsequently abandoned, for the new name is not written upon _ his 
Herbarium tickets. In any case it can only be considered as a well-marked 
geographical form of O. crispum. 
CALENDAR OF OPERATIONS FOR AUGUST. 
By J: T. BARKER, The West Hill Gardens, 
Hessle, EB. Yorks 
HE continued bright summer weather has been to the liking of all 
Orchids which require a warm temperature, and it is remarkable the 
strides many plants have made; whilst plants grown in the cool division 
have also made good progress where proper methods as regards shading, 
&c., have heen taken. 
During the present month the general growing conditions should be 
maintained in each division, and considerable attention must be given to 
the ventilation, shading, watering, and damping down, which go to make 
the conditions of the different houses suitable and healthy for the different 
plants grown in them. The whole question of successful culture depends 
entirely on the way these simple details are carried out. Plants, like 
human beings, cannot thrive under unhealthy conditions, and cleanliness is 
as important in plant culture as it is to the individual. 
During the present month some plants will have completed theif 
growth, while others will be approaching that stage. Those plants which 
require a long rest should be removed to another house, where they may be 
gradually inured to a drier and lower temperature, and be subjected to 
more sunshine and light to ripen and consolidate their growths. Where 
