ZYGOPETALUM. 513 
across; sepals tin. long; petals the same length, but 
narrower; they are green, with large blotches of brown. 
The lip is nearly circular, a little more than tin. wide, 
and coloured purplish blue, the large, ruff-like crest being 
sin. deep, and dark purple in colour. This species blos- 
soms in winter, and remains in beauty for about six 
weeks. It requires intermediate-house treatment, and 
plenty of water always, and should be planted on a 
raft or block of fern-stem. A native of Brazil; intro- 
duced in 1844. 
Botanical Magazine, t. 3686. 
Z. rostratum.—A large-flowered, well-known species, from 
Demerara, where it is common on small trees in the shade 
of forests. It has a creeping rhizome, bearing, at intervals 
of rin., ovate, flattened, two-edged pseudo-bulbs 2in. long, 
at first inclosed in the sheathing portions of the basal 
leaves. The permanent leaves are 5in. long, 14in. wide, 
acute at the apex, dark green. The scapes, which are 
developed with the new growths, are 4in. long, and bear 
from one to three flowers, each from 4in. to 6in. across; 
the sepals and petals are narrow, spreading, white; and 
the broad, heart-shaped lip is nearly 3in. long, flat, white, 
with a rose-purple crest and radiating lines of the same 
colour. The column is short, thick, with a pair of ear-like 
wings near the apex. This species requires the same treat- 
ment as Z. maxillare, but a higher temperature, the moist, 
hot stove being most suitable for it. It flowers in May or 
June. Introduced about 1830. 
Botanical Magazine, t. 28109. 
Z. Sedeni.—A hybrid, raised in the nursery of Messrs. 
Veitch, Chelsea, and flowered by them in 1883. Its parents 
were Z. maxillare and Z. Mackaii; it is, therefore, very 
similar to Z. Clayi, the main difference being in its narrower 
ae 
