those present confined to the upper portion of the stems, 
numerous, distichous, horizontally spreading, ovate-ob- 
long or elliptic-oblong, about 2.4 cm. long or less, up to 
8 mm. wide (the larger and the smaller blades inter- 
spersed), rounded at the apex with slightly unequal lob- 
ules separated by an apicule, deeply clasping at the base, 
with the mid-nerve conspicuously suleate above and cari- 
nate beneath. Inflorescences scattered on the upper part 
of the plant, short, axillary, solitary, 1-flowered, about 
equaling the leaves. Peduncle adorned with one or two 
scarious erect acute sheaths. Flower small, membrana- 
ceous. Dorsal sepal strongly concave, when expanded 
ovate-lanceolate, long-acuminate, about 7.9 mm. long 
and 3.2 mm. wide below, 3- or less distinctly 5-nerved. 
Lateral sepals obliquely lanceolate or ovate-lanceolate, 
about 7 mm. long and 2.8-8 mm. wide, long-acuminate 
with infolded margins, 3- or indistinctly 5-nerved. Petals 
faleately elliptic-linear, about 6.5 mm. long and 1.2 mm. 
wide in the middle, complicate-acute, 8-nerved through 
the lower portion and 1-nerved throughout. Lip rhom- 
boid in outline, subsimple or indistinctly 3-lobed above 
the middle, 6 mm. long, about 8.7—4 mm. wide across 
the middle, cuneate toward the base, with the anterior 
portion subquadrate or subquadrate-ovate, broadly trun- 
‘ate at the apex in the center of which is a dorsal thick- 
ening; dise with a fleshy oblong callus extending from 
near the base to the middle. Column short, abruptly ar- 
cuate and somewhat dilated above, 3.2-8.9 mm. long, 
extended into a foot which is about 2.8 mm. long. An- 
ther conic-hemispherical; pollinia four. 
Another collection, ( Brenes 182) 1378, differs from 
the type in having larger leaves which extend to about 
3.2 em. in length and 1.1 em. in width, also in having 
slightly smaller flowers. It shows a pollen-mass consist- 
ing of two pairs of complanate-obovoid pollinia attached 
[ 120 | 
