solitary, linear-ligulate, two-lobed, generally four to six inches 
long, but sometimes attaining a foot, usually one-third to two- 
thirds of an inch wide. The inflorescence rises "from the very 
young bulb, when still not yet developed, and covered by its 
sheaths. The rachis bears one or two triangular acuminate 
keeled spathaceous sheaths. The inflorescence consists of one to 
four usually one-sided flowers, The bracts are quite like the 
sheaths, but browner and usually covered with more little spots. 
The stalked ovaries are wingless, nearly trigonous, covered with 
minute acute papille. Sepals linear-acuminate, patent, sulphur 
to light ochre-colour, but mostly sulphur-coloured. Tepals 
nearly equal, usually shorter, sometimes much broader. Lip 
pandurato-ligulate apiculate, with a short furrow before its base, 
an obtuse keel on its under surface, sometimes a revolute den- 
ticulate limb near the apex, and with transverse radiating little 
sulcations around the anterior margin. Itis of the same colour 
as the sepals and tepals, but has a deeper yellow line over the 
disk of the upper part. We did not observe such sagittate 
auricles as they have been represented by the artist. The lip 
usually rounded at its base. The trigonous bent column has a 
tridentate androclinium and a protracted base. The anther is 
highly curious; it is trigono-conoid, having a serrate longitudinal 
crest on the top, and two triangular curved auricles overlapping 
the rounded rostellum, serrate inside: these have been very 
judiciously compared by the late Dr. Lindleygto the head of some 
insect. ‘The flowers are sweet-scented, the odour being compared 
to that of Heliotrope. Dr. Lindley has seen flowers almost 
white. The stigmatic hollow is subject to many variations. 
Materials : — Analyses and sketches of the habit of the plant, 
with descriptions made at three different times; forty-five her- 
barium specimens ; the plant often observed in a living state. 
Tab. 87.— The plant, with a poor inflorescence. 1, flower, front view ; 
2, the same, side view; 8, the same, sepals and tepals removed; 4, inside 
view of column and lip +; 5, anther, oblique side view +; 6, pollinia, 
seen obliquely + ; 7, pollinia, side view +.—H. G. R. f. 
eed 
This is a species making but little show, and is easy of culti- 
vation, if placed on a block of wood or piece of cork near the 
light, in the Mexican house. My specimens were sent to me 
from Mexico by Mons. Boucard.—W. W. S. 
