﻿THE ORCHID REVIEW 



[August, 1904. 



help wondering what its particular use to the plant is. It probably has 

 some definite relation to the insect which fertilises the flowers, but about 

 this we know nothing. The lip of D. Harveyanum is only slightly fringed. 

 The two plants are both allied to D. fimbriatum, a species which owes its 

 name to the character of the lip, though the fringe is quite rudimentary as 

 compared with D. Brymerianum. A form of the latter was, however, 

 described as var. histrionicum (Rchb. f. in Card. Chron., 1888, i., p. 104), 

 in which the fringe is very little developed, and the flowers are said to be 

 self-fert'lising before they expand, and are rarely properly developed. 

 Curiously enough, it is said to flower invariably in autumn, while the type 

 flowers in spring. It is not comparable with the type from a decorative 

 standpoint. The latter is a very striking plant, and extremely handsome 

 when well grown. It has proved rather disappointing to the hybridist, for 

 only one hybrid from it is yet known, namely Dendrobium X Hunteri, and 

 that shows little of the character of this parent. 



CALENDAR OF OPERATIONS FOR AUGUST. 



The temperature and general management of the houses should be 

 continued as advised in the preceding Calendars. 



There will soon be many Dendrobiums which have completed their new 

 pseudo-bulbs, and will need removing to a cool, light, airy house, so as to 

 thoroughly ripen and mature them, though at the same time the supplies of 

 water should not be too suddenly reduced. The whole of the genus, with 

 but few exceptions, absolutely requires this treatment of plants that are 

 expected to bloom well, and to remain healthy. Both species and hybrids 

 should be so treated, and no fear or apprehension whatever need be felt 

 with regard to the consequences. Select each plant for removal when the 

 new pseudo-bulb has produced its terminal leaf; the new bulb will gradually 

 gain in dimensions in the cooler department, and also ripen at the same 

 time. There may be some few kinds which start new growths again from 

 the base, before the first is completed, but such second growths should be 

 disregarded, as they usually make up all right. It is the first growths that 

 are the chief ones, and these should be alone studied and cared for. It is 

 when Dendrobiums are kept in growing temperatures until very late in the 

 season, in order to finish their second growths, that they are often very 

 seriously injured by becoming weakly, and developing spot in its various 

 forms. A few species, such for instance as D. formosum, should not be 

 removed immediately the new pseudo-bulb is completed, because the 

 flowers commence to push from the apex at once, and of course the drier 

 and more airy conditions would seriously affect them. The same may be 



