THE ORCHID REVIEW. 199 



position, and water gradually reduced. Do not expose to full sunlight 

 until properly matured. 



Disa grandiflora. — This interesting cool Orchid is always admired where 

 it can be grown with success. Blooming at the present time its flowers are 

 very welcome, when most Orchidaceous plants are over and making new 

 pseudo-bulbs for another season. If kept cool and shaded from the sun,, 

 the flowers will last well into August. When fully expanded, they require 

 keeping a little drier, both at the root and in the atmosphere, but whilst in 

 bud a slight spraying over once a day will be very beneficial. A short rest 

 should be given before new growth commences, by placing them outside in 

 some shady nook until required for repotting in September, when I shall 

 have more to say regarding this operation. A sharp look-out for slugs and 

 woodlice is necessary whilst occupying a position outside. 



CATASETUM TRIFIDUM 3 AND $> . 



Another interesting case of the production of flowers of both sexes of a 

 Catasetum can now be recorded, and, fortunately, it carries our knowledge 

 of the genus a step further- Early in June an inflorescence of three female 

 flowers, with a number of abortive bracts, was sent to Kew for determination 

 by Mr. F. W. Moore, A.L.S., of Glasnevin, with the information that the 

 plant was received from Brazil through M. Binot. The sepals, petals, and 

 lip were heavily spotted with dark brown, in a way not previously observed, 

 and as the species could not be determined it was requested that the plant 

 should be marked and await the production of male flowers. Little over a 

 week later came a fine inflorescence, bearing twenty flowers, which had 

 since expanded on the selfsame plant, and these belonged to Catasetum 

 trifidum, Hook. (Bot. Mag. t. 3262). Theoretically, then, the females should 

 have belonged to Lindley's original Monachanthus viridis (Bot. Reg., sub. t. 

 1538), though on comparison the two were markedly different 



I had assumed that Lindley's original Monachanthus viridis and Myan- 

 thus cernuus (the latter being identical with Catasetum trifidum) represented 

 the two sexes of the same species. The drawings and specimens had been 

 sent together to Sir William Hooker, from the neighbourhood of Rio de 

 Janeiro, by some person now unknown— who himself had observed that 

 the bulbs and leaves were like those of a different flower— and 

 were described together by Lindley, and I had added:— "The two 

 drawings were evidently made by the same hand and at the same 

 time, for the colours used, as well as the workmanship, are so identical 

 as to leave no doubt on the subject. Looking at the two, there 

 cannot be the slightest doubt that they represent respectively the male and 



