PROMENAZA. 431 
P. citrina.—A dainty little Orchid, and the best-known 
of the Promenzas. It is similar to P. Rollissoni in every 
character except the flowers, which are smaller. The sepals 
and petals are pale lemon-yellow, and the column is streaked 
with red; the lip is three-lobed, yellow, with crimson spots 
in the throat. It is a native of Brazil, whence it was 
introduced in 1838. Syns. P. xanthina, Zygopetalum 
citrinum. 
P. graminea.—This species is singular in not possessing 
any pseudo-bulbs, the leaves rising in a fan-like manner 
directly from the root. They are jointed about tin. 
from the base, lance-shaped, channelled, 6in. long, and bright 
green. The flowers are produced in clusters from the 
bases of the leaves, each on a separate scape, which is 
about 2in. long and decumbent. In form and colour the 
flowers are like those of S. stapelioides; but the sepals 
and petals are narrower, and thinly spotted with rich, 
deep brown, whilst the lip is oval, with scarcely any side 
lobes, the margin crisped, and the colour yellow, shaded 
with rose and blotched with crimson-brown; the large 
column is yellow at the top. This plant is not common 
in cultivation. It has been called Kefersteinia, Maxil- 
laria, and Zygopetalum. It is a native of Brazil, and was 
introduced in 1857. 
Botanical Magazine, t. 5046. 
P. Rollissonii—This has roundish, compressed, green 
pseudo-bulbs less than rin. long, and two-leaved. The 
leaves are lance-shaped, recurved towards the tips, and 
from 2in. to 3in. long. The flowers are borne singly on 
short, decumbent scapes, which spring from the newly- 
ripened growth, and each flower is 2in. across; the sepals 
and petals are similar, oblong, with acute points, spreading, 
