Grenada, and Trinidad, of the British Islands. It also in- 
habits Martinique ; and on the Main the Isthmus of Darien, 
Venezuela, Guiana, New Grenada, and Peru, advancing in 
the latter country to Huanuco in 10 degrees South. It is 
curious that a plant spread over so wide an area should not 
hitherto have been found in Jamaica. 
The Royal Gardens are indebted for this singular plant to 
Mr. Ortgies of Zurich, who received it with a collection of 
Orchids from the Spanish Main. It flowered in a tropical 
stove in July of the present year. 
Derscr. Roots of ovoid stalked hollow green tubers, one- 
third to half an inch long, which are formed on filiform, wiry, 
tortuous fibrils, that also bear at intervals, beyond the tubers, 
- minute deformed transparent utricles. Leaves four to six 
inches long, erect, elliptic-lanceolate, obtuse or acute, nar- 
rowed into slender petioles, dark-green on both surfaces, 
smooth, 3-nerved ; lateral nerves faint, joined to the central 
by faint oblique venules; petiole terete, jointed above the 
base. Scape much longer than the leaves, erect, slender, 
wiry, terete, with one or several erect linear bracts. Flowers 
one to four; very large, one and a half inches in diameter, 
drooping ; pedicels one-half to three-quarters of an inch long ; 
with a small obtuse bract at the base. Calyx-lobes pale green, 
ovate-cordate, obtuse. Corolla white, with a yellow palate 
and disk to the lower lip; upper lip one inch in diameter, 
orbicular, with a truncate base, horizontal, with recurved 
edges; lower lip transversely oblong, twice as large as the 
upper, palate high and very prominent, closing the throat ; 
spur a stout horn, shorter than the limb, incurved. Stamens 
with clavate filaments, and vertical, two-celled anthers. 
Seeds fusiform.—/J. D. H. 
~°Fig. 1;. Lower sepal and upper lip; 2, lower lip and spur; 8, ovary 
and stamen :—all magnijied. 
