a 
50 
* LAC/ENA bicolor. 
Two-coloured .Lacena. 
GYNANDRIA MONANDRIA. 
Nat. ord. ORcHiDACEX. $ Vanpex; MAXILLARIDA. 
LACENA, Lindl. Perianthium carnosum patens, sepalis subaequa- 
libus basi subconnatis. Petala conformia minora. Labellum cum columná 
et in medio articulatum, hypochilio unguiculato cuneato bilobo apice pulvi- 
nato, epichilio integro. Columna erecta semiteres, Pollinia 2, posticé fissa, 
caudiculd setaceä, glandulá minutä.—— Herba, Peristeriæ habitu. 
L. bicolor, Lindl. in Bot. Register, 1843. misc. 101. 
This fine plant was sent to the Horticultural Society 
from Guatemala by Mr. Hartweg, who found it in the moun- 
tains of Salama, in the province of Vera Paz, also near the 
village of Sunil, near Quezaltenango, in Guatemala, growing 
on rocks, at an elevation of about 7000 feet above the sea. 
In May, 1843, it produced its flowers, and ever since has 
been in such bad health that it is doubtful if it will survive. 
In habit the species is so like some of the Peristerias 
with pendulous racemes, that it would certainly be mistaken 
for them ; and in structure it approaches them no doubt very 
closely. It is, however, essentially distinguished by the 
labellum and pollen apparatus. In Peristerias the labellum, 
although having a moveable joint in the middle, is continuous 
with the column by a thick fleshy base ; here the articula- 
tion at that part is very conspicuous. The Peristerias have 
four pollen-masses; here we have but two. And, finally, 
the strap by which the pollen-masses cohere is long and 
slender, like that of a Lycaste, not deficient, so as to render 
* TThis was one of the names of Helen, and may be applied to this plant 
because of its beauty: but it may also be derived from Maxi; a cleft, in allu- 
sion to the divisions of its lip. 
x 
