176 ORCHID -grower's manual. 



great attention as regards moisture during the growing season, 

 but should be kept dry during winter. The flowers are large, 

 and are produced in pairs from the nodes on each side of the 

 stem ; sepals and petals dark purple ; lip white, edged with 

 purple. Blooms in March and April, and will last two weeks 

 in perfection. 



D. longicornu majus. — A charming Indian variety, in the 

 way of D. formosum, but not so strong in growth. Flowers 

 white, except the lip, which has a yellow centre, and is fringed. 

 Of this there are two varieties, but the one now described is 

 the best. It produces its blossoms from the top of the stem 

 in May and June, and they continue in perfection a long time 

 if kept in a cool-house. Treatment the same as that for D. 

 formosum. 



D. Lowii. — A fine rare species from Borneo, where it was 

 first found by Mr. H. Low, to whom we are indebted for 

 many beautiful Orchids. A very distinct plant, growing in 

 the way of D. longicornu, with upright stems a foot high, fur- 

 nished with dark green foliage, and producing in racemes, 

 from the side of the stems near the top, large flowers, mea- 

 suring about two inches across, the colour bright yellow, with 

 reddish veins on the upper part of the lip. This will succeed 

 in a pot or basket, or on a block, provided it has a liberal 

 supply of water when in vigorous growth. We have seen it 

 bloom both in summer and late in autumn. 



D. marmoratum. — A very pretty species from Burmah, 

 having white sepals and petals blotched at the extremities 

 with purple ; lip purplish ; it is said to be in the way of D. 

 transparens. 



D. macrophyllum. — See also D. superhum. 



D. macrophyllum. — A fine distinct species, which has 

 clavate stems bearing two or three leaves. The racemes of 

 flowers are erect ; the sepals are yellow, shaded with green ; 



