arc green. Wight's figure of P. bicolor (Ic. PL Ind. Or. 

 t. 1659-1660) confirms the identification. 



The nearest ally of P. Wallichii is the long-cultivated 

 P. grandifolius, Lour. (Bletia Tankervilliae, Br., see Plate 

 1924 of this work), of China, which, though now far sur- 

 passed by P. Wallichii, was in my younger days considered 

 to be the finest orchid in cultivation. It has smaller 

 flowers, less acuminate sepals and petals, and a much shorter 

 obtuse spur. It is perhaps as variable in colour, and the 

 P. Blumei, Lindl. (Limodorum Incarvillei, Blume), a plant 

 described from cultivated specimens in Java, is probably 

 a yellow-flowered variety of the same, for a primrose- 

 yellow variety of it is figured in this work (Plate 6032) 

 from Australia, and under the description that accompanies 

 the plate, I have recorded Dr. Reichenbach's opinion that 

 P. grandifolius, Blumei and Wallichii might be regarded 

 as sub-species of one. Be this as it may, /'. Wallichii v& 

 more different from P. grand if oli us than the latter is from 

 Blumei. 



P. Wallichii has been Ions: in cultivation in England, 

 but never figured m so fine a form as that here represented, 

 which was sent to Kew from Assam by Mr. C. B. Clarke, 

 F.R.S., in 1886, where it flowered in May of the present year. 



Fig. 1, Column and spur; 2, anther; 3 and 4, pollinia -.—all enlarged. 



