182 orchid-grower's manual. 



ever seen ; the bulbs are three feet in height, and the 

 spikes of flowers two feet long, bearing more than fifty 

 flowers on a spike ; the blooms are very large, and of the 

 same colour as D. Thrysiflorum. This is named in honour 

 of C. Walker, Esq., Lanark. 



D. tlirysijio7'um. — A fine showy species, in habit like D. 

 densiflorum, but stronger, with the apex of the bulbs slightly 

 yellow, and producing splendid clusters of golden and white 

 flowers. From Moulmein. There have been some large 

 importations of late, and many have proved very fine 

 varieties, some varying in colour of flowers and size of 

 spike. 



D. tortile. — A pretty evergreen species from Java, growing 

 about two feet high ; it blooms in the same way as D. nohile, 

 and requires the same treatment. The flowers are pale 

 yellow, indeed almost white ; it blooms in May and June, 

 lasting a long time in perfection. 



D. tortile roseiim. — This is a beautiful variety of the pre- 

 ceding species, resembling it in every respect, saving the 

 colour of its flowers, which are in this plant a delicate rose, 

 shaded with yellow. A very desirable variety ; blooms in 

 May and June. Native of Java. 



D. trans]oarens. — A beautiful small-flowering Indian Orchid, 

 which blooms in the same way as D. nohile. The flowers, 

 which grow in pairs along the stems, are of a pale, trans- 

 parent, pinkish lilac, stained in the middle of the lip with a 

 blotch of deep crimson ; it blooms in May and June, and 

 does well grown in a pot with peat or moss. 



D. triadenium. — A delicate Orchid from India, of upright 

 growth, and evergreen ; it produces its white and pink flowers 

 on a small spike from the old stems, and lasts two weeks in 

 bloom ; flowers at difi'erent times of the year, and is best 

 grown in a pot with peat. 



