226 ORCHIDS 
Vegetable Kingdom. With us it thrives when planted in 
a basket or on a block, and grown along with D. nobile. 
It has been in cultivation since 1815. 
Botanical Magazine, t. 2584. 
D. primulinum.—A charming species, easily grown, and 
a free flowerer. The pseudo-bulbs are about rft. long, 
drooping, as thick as the little finger, grey-green; leaves 
lance-shaped, 4in. long, deciduous. Flowers in pairs from 
the joints of the last-ripened growths, each 2in. or more 
across; sepals and petals narrow and equal, pale mauve; 
lip 2in. across, covered with soft hair as if frosted, coloured 
pale primrose-yellow, with a tinge of purple in the throat. 
This exquisite plant thrives perfectly when treated as 
advised for D. aureum; it blossoms in March, the flowers 
lasting several weeks, and emitting a cowslip-like fragrance. 
A native of Sikkim, &c.; introduced about 1837. 
Botanical Magazine, t. 5003 (under name of D. nobile 
pallidifiorum). 
D. speciosum.—A sturdy species in which the pseudo- 
bulbs are very stout, 1ft. or more long, nearly in. 
in diameter at the base, bearing two or three leathery, 
dark, shining leaves, 8in. to roin. long, and one-third as 
_wide. It produces a long, terminal, semi-erect raceme (from 
ft. to 2ft. in length) of fragrant, wax-like, creamy or 
yellowish-white blossoms, which, although not large, are 
very numerous. ‘They are curiously inverted, the lip appear- 
ing to be at the upper part of the flower; the sepals and 
petals are incurved and narrow; the lip is shorter than 
the sepals, and is spotted with purple. When this plant 
is making its young growths, a little heat is necessary ; but 
when these are mature, it should be removed to the open 
air for two or three months, giving only just sufficient 
water to prevent shrivelling. It should be grown in a pot, 
