ODONTOGLOSSUM. 215 



branching spikes of bloom, which are, in the sepals and petals, 

 reddish brown, greenish outside; the lip yellowish white. It 

 succeeds well in the cool-house, continuing in bloom for 

 three months. This species has flowered very freely in the 

 collection of the Bishop of Winchester, under the care of 

 Mr. Laurence. Native of Central America. 



0. citrosmum. — ^A charming Orchid from Guatemala. It 

 produces its long pendulous spikes of flowers in June and 

 July ; the ground colour is white, the flowers measuring two 

 inches across, twelve or more on one spike. It will continue in 

 perfection four or five weeks if kept in a cool-house fi-ee from 

 damp, and makes one of the finest plants for exhibition. 



0. citrosmum roseum. — A fine variety of the preceding, from 

 Guatemala ; it grows in the same way, and produces its rosy 

 flowers on long drooping spikes. The late J. A. Turner, Esq., 

 exhibited this variety, with many spikes, on one occasion in 

 fine condition at the Manchester Botanic Garden. 



0. constrictum — Although not a large flowered species, 

 this plant is very pretty, producing a quantity of flowers upon 

 a large branching spike. The pseudobulbs are somewhat 

 ovate, ribbed and dark green, supporting a pair of oblong 

 leaves of the same colour ; spike branching and many- 

 flowered ; sepals and petals yellow, spotted and barred with 

 reddish brown ; lip white, tipped with yellow, and bearing two 

 conspicuous rose-coloured spots near the centre. Native of 

 Caraccas. 



0. cordatum. — A desirable species from Guatemala. It grows 

 ten inches high, and has short thick pseudobulbs, from the side 

 of which the spikes proceed ; sepals and petals yellow, barred 

 with crimson ; lip white, spotted round the edge with crimson. 

 This plant requires to be grown in a pot in peat. I saw a 

 wonderful specimen of it in the collection of T. Dawson, Esq., 

 measuring eighteen inches across, and which produces many 



