398 ORCHIDS. 



This plant has already been described under its former 

 name, Phajus. It is a deciduous plant, producing terminal 

 racemes of pure white flowers, with lines of lilac, just as 

 growth has finished. The foliage is glaucous green, and 

 when well grown the flowers are large, making it a most 

 effective plant. 



A. Thunia Bensonice. Moulmein . . . Jen. Orch., 35. 



B. M., 5694. 



This is a stouter- growing species than Thunia alba, but 

 not so tall. It resembles it in foliage, but the flowers are 

 lilac-purple ; lip rich purple, crested with bright yellow. 

 A very beautiful Orchid. 



Thunia nivalis is a pure white variety of Thunia alba. 



These plants should be potted in coarse fibrous peat, 

 with a little silver sand, and with good drainage, when 

 the buds swell at the base of the pseudo-bulbs. They 

 should then be placed in the warmest house, and have an 

 abundance of water. After blooming, gradually reduce 

 the supply of water until the leaves fall ; then remove the 

 plants to the cooler house, and only give enough water 

 to keep the stems from shriveling. 



They are easily propagated by division or by cutting 

 up the stem just when growth is completed, and rooting 

 the pieces in slight bottom heat, like ordinary cuttings. 



Trichocentrum. Poeppig and Endlicher. Epiphyte. 



Name from 0/w', a hair, and Kfvrpov, a spur, from the long, narrow 

 spur of the labellum. 



A. Trichocentrum atropurpureum. Rio Negro. 



B. M., 5688. 



