conferta, Poepp. and Endl., is described and figured as 

 having no evident pseudo-bulbs, and the present is also 

 described by Dr. Lindlev as having none : but to me it 

 appears that the articulations of the stem and the branches 

 are, in reality, narrow, almost cylindrical, pseudo-bulbs, 

 which are proliferous from between their leaves. S. vio- 

 lacea inhabits British Guiana, whence our plant was received 

 by C. S. Parker, Esq., and communicated to the Royal 

 Botanic Garden of Glasgow. It flowers generally in the 

 winter season. 



Descr. Stem elongated, consisting of a series of joints, 

 each of which may be considered a long, narrow, cylin- 

 drical, or only slightly tapering upwards, pseudo-bulb, more 

 or less clothed with sheathing, rugged scales, and bearing 

 two leaves at the extremity. New pseudo-bulbs arise from 

 the axil of the pair of leaves, and so the species increases 

 in length. Leaves three to four inches long, spreading, 

 linear-lanceolate. Flowers small, axillary, drooping, pur- 

 ple, solitary, or two together ; the ovary sheathed with 

 small imbricated scales. Sepals oblong, obtuse, connivent, 

 the two lower ones united at their base into an obtuse sack 

 or pouch; petals smaller, and paler coloured. Lip oblong, 

 three-lobed, the lateral lobes and terminal one obtuse. 

 Column semicylindrical, the margin winged on each side. 

 Anther-case hemispherical. Pollen-masses four, oval, sessile, 

 seated on a large, white gland. 



Fig. 1. Flower. 2. Labellum and Column. 3. Anther-case. 4. Pollen- 

 masses : — magnified. 





