sive years fifty-six and sixty-eight flowers between the 

 months of July and September. 



The only other yellow- flowered speciesof thegenus hither- 

 to figured is 8. chlorantha, Hook. (Plate 4682), a native of 

 Para, it has broader elliptic-oblong subcoriaceous obscurely 

 nerved leaves, and much smaller flowers, with a narrower 

 lip than 8. xantholeuca. 



There is a doubt as to the authority of the name xantho- 

 leuca, but I think it may be traced to Mr. Vershaffelt's 

 Nursery, and that Reichenbach applied it in or about 

 1880. rr 



The plant here figured was obtained from Messrs. F. 

 bander and Co. in 1892, and flowered in the cool orchid 

 house of the Royal Gardens, in July, 1893, the stem being 

 then two feet high. 



Descr.— Stems tufted, two feet high, as thick as a goose- 

 quill, clothed with the appressed leaf sheaths which are 

 pale greenish speckled with red-brown. 'Leaves 6-7 inches 

 long, spreading and drooping, sessile on the sheaths, lan- 

 ceolate, narrowed into long points, plaited with parallel 

 deeply sunk nerves which answer to as many strong nerves 

 beneath, dark green. Bracts few, 1-2 inches long, con- 

 volute, acute. Flowers solitary, terminal, colour lemon- 

 yellow, with a golden throat to the lip streaked with darker 

 yellow ; ovary short. Sepals 3^-4^ inches long, liuear- 

 lanceolate, acuminate, spreading and recurved. Petals 

 similar, but rather shorter. Lip not longer than the 

 sepals ; tube cylmdric, lamina orbicular, spreading with 

 broad recurved, crispily waved crenate margins. Column 

 long. — /. D. H. 



Fig«. 1 and 2, column ; 3, anther; 4 and 5, pollinia -.-All enlarged. 



