PROMENEA CITRINA. 
[PLATE 7. | 
Native of Brazil. 
Epiphytal. Pseudobulbs small, ovate, tetragonal. Leaves three to four inches in 
length, oblong-ligulate, acute, tapering below into a narrow petiole, growing two 
together at the apex of the pseudobulb, of a pale green colour. Scapes two to 
three inches long, bearing largish ovate bracts in the upper part, and smaller bracts 
elow, and terminated by a solitary deep yellow showy flower, measuring about an 
inch and a half across; sepals obovate, acute, concave or curving forw at the 
tip, bright yellow; petals yellow, also converging, similar to the na in size, 
form, and colouring; lip larger and broader than the sepals and _ petals, spreading, 
three-lobed, the two lateral lobes erect, oblong obtuse, rising up on each side of the 
column, yellow spotted with red on the inner face, the front lobe plane, obovate, 
apiculate, unspotted yellow, with a prominent crest at its base. Colwmn erect, semi- 
terete, incurved, stained in the front with brownish red. 
PRoMEN#A crrrina, Don, Hortus Cantabrigiensis, ed. 13, 720 (1845); Loudon, Hortus 
Britannicus Supp. 618 (1850); Williams, Orchid Growers’ Manual, ed. 4, 253, 
ed. 5, 281; Rand, Orchids, 377. ; 
Maxiiiaria crrria, Lyons, Treatise on Orchidaceous Plants, 176. 
-Promenea is a small genus of Orchids which was separated from Mazillarva 
about forty years ago (1843) by Lindley, who at the same time also dissociated 
from it the plants respectively referred to Warrea, Paphinia, Lycaste, and Scuticaria. 
Later on Reichenbach classed Promenwa as a section of Zygopetalum. Dr. Lindley 
distinguished the group of species which he referred to Promenwa, and which he 
regarded as fully entitled to generic rank, by the following peculiar features, 
namely, their spreading sepals, their three-lobed lip, crested or tuberculate at the 
base, their short semi-terete column, and their ovate glandule with four, that is 
two double, sessile pollen masses. The species then proposed were P. stapelioides, 
P. wxanthina, P. lentiginosa, P. Rollissonii, and P. graminea, To these Reichen- 
bach added P. guttata in 1856, and P. microptera in 1881. Neither of these 
authorities, so far as we can trace, refer to P. citrina; but, according to Don and 
Loudon, the plant was introduced to our gardens in 1840, though they attribute 
to it the erroneous habitat of Mexico. Our good friend, Professor Reichenbach, 
suggests that it is a garden name, sometimes applied to P. Rollissonii and sometimes 
to P. guttata; but it has long been recognised as a distinct plant by English and 
Continental Orchid growers, and is certainly different from the P. Rollissonii figured — 
