58 



DENDROBIUM. 



across, in pendulous racemes of twos and threes from the uppermost 



joints ; sepals and petals pale rosy mauve sun used with white, the 



former lanceolate-acute, the latter broader, ovate-oblong, sometimes striped 



along the middle with amethyst-purple; lip sub-rhomboid, convolute at 



the base, delicate mauve-purple, striped with deep purple, and with a 



maroon-purple disc surrounded by a white zone ; spur nearly as long 



as the pedicel, obtuse, whitish. Column short, white above, purplish 



beneath. 



Dendrohiuru MacCarthise, Thwaites. Bot. Mag. t. 4886 (1855). Gard. Chroii. 

 1856, p. 692. Thwaites, Plant, zeyl. p. 297. 



Dendrobium MacCarthi*. 



Communicated to the Royal Gardens at Kew, in 1855, by Dr. 

 Thwaites, Director of the Botanic Garden at Peradeniya, in Ceylon, 

 who had discovered it growing on the trunks of trees in the forests 

 about Ratuapoora, and towards Point de Galle, in the southern parts 

 of the island. Dr. Trimen, the present Director of the Botanic 

 Garden at Peradeniya, informs us that this orchid is getting very 

 scarce, and will soon become extinct; it never seems to become 

 established, and he believes its life to be naturally shorter than 



