j;inu;iiv, 1915.] 



'1H1>: ORCHID WOKIJ). 



Ill llic i^iiiss-houscs ol (Ircat Britain should 

 111)1 l)c hi^'hcr than 21 dcj^'s. to 24 dc^s. ('. 

 (70 (l(>i4S. to 75 cleg's. F.) from March to 

 October, the period durinj^- whudi the plants 

 arc HI active growth, raised by sun-heat on 

 bright days () degs. C. (10 degs. F.) higher, 

 and reduced 3 degs. C (5 degs. F.) by night, 

 that is to say, to 18 degs. to 2 1 degs. C. 

 (()5 (legs, to 70 degs. F.). In the winter 

 months a night temperature of 15 degs. to 18 

 degs. C (()0 degs. to 65 degs. F.), raised a 

 little higher in the daytime, is sufficient. It 

 is well known among cultivators that a 

 high temperature maintained by fire-heat 

 debilitates, while sun-heat strengthens the 

 plants, hence a light shading" only is necessary 

 during the middle of the da\- in the summer 

 months, while from October to March no 

 shading is required. 



The ventilation must be regulated accord- 

 ing to the season ; the rule is — admit as 

 much fresh air into the liouse as possible, 

 and as often as it can be done without 

 draughts and too rapid a lowering of the 

 temperature of the house. A high degree of 

 humidity must be maintained during the 

 growing season by damping down and by the 

 direct application of water to the plants. In 

 winter the watering must be restricted to just 

 so much as is sufficient to keep the sphagnum 

 moist and to counteract the drying effects of 

 the hot-water pi]ies. Pots are usualh' 

 preferred, although teak baskets are used by 

 some cultivators, especially when it is desired 

 to grow the plants into large specimens ; in 

 either case they should be filled with clean, 

 broken crocks to three-fourths of their depth, 

 the larger and coarser pieces being placed at 

 the bottom. Some cultivators add pieces of 

 charcoal, but we have never detected any 

 advantage derived from its use. The 

 drainage should be surfaced with living 

 sphagnum that must be kept constantly 

 moist. In January, or February at the 

 latest, the old sphagnum should be removed 

 and replaced by new, and those plants whose 

 lowermost leaves have withered should be 

 taken out of the pots and their stems cut back 

 at the base so far as to allow the fresh leaves 

 to be close to the sphagnum. 



1 lirii)s and scale are great enemies of 

 Aendes ; the lirst can \)c kept in check iiy 

 ( uiiiigat 1011 and llie use of tobacco powder, 

 the latter by sponging with solt s(jap 

 dissolved in tepid water. 



Acrides virens was introduced in 1843 by 

 Messrs. Loddiges from Ja\a, wiiere it is one 

 of the commonest of orchids. Around 

 Balaxia it has established itself on the 

 Tamarind trees that were planted b)' the early 

 Dutch settlers to shade the roads. During 

 the short dry season these trees lose some of 

 their foliage, the Aeridcs are then partially 

 exposed to direct sunlight, but during the 

 remainder of the year they are in shade. 



Conipared with Aendes odoratum, of which 

 A. virens is .scarcely other than a geograi)hical 

 form — the Iea\es are generally (noi always) 

 a little longer and narrower, more distant and 

 more decurved ; the racemes are longer with 

 the flowers more distantly ])laced along the 

 rachis ; the flowers are a little larger with 

 larger and brighter purple spots. -From 

 Veitch's Manual uf Orchidaceous Planls. 



ROYAL HORTICULTURAL 

 SOCIETY, 



December ist, 1914. 

 Members of the Orchid Committee present: 

 J. Gurney Fowler, Esq. (in the chair), Mr. 

 Jas. O'Brien (hon. sec), .Sir Jeremiah 

 Colman, Bart., Sir Harry J. Veitch, Messrs. 

 Gurney Wilson, W. Bolton, \\\ H. W'hite, J. 

 Wilson Potter, F. ]. Hanbury, R. G. Thwaites, 

 R. A. Rolfe, W." Cobb, F. M. Ogilvie, J. 

 Charlesworth, C. H. Curtis, W. P. Bound, A. 

 Dye, J. E. Shill, S. W. Flory, and R. 

 Brooman- White. 



Award of Merit. 

 Brasso-Cattleya Admiral Jellicoe var. Pmk 

 Pearl (C. Lord Rothschild x B.-C. Digbyano- 

 Mossiae), from Messrs. Stuart Low and Co., 

 jarvisbrook, Sussex. — A very attractive 

 flower, of excellent shape, the broad segments 

 of pale lilac-pink, the disc of the labellum 

 primrose-)-ellow. 



Other Exhibits. 

 His Grace the Duke of Marlborough, 

 Blenheim Palace, sent Brasso-Cattleya Ida 



