species. 
Plant 12.5-25 em. high, provided at base with a rhi- 
zome. Roots numerous, fibrous. Pseudobulbs approxi- 
mate, narrowly ovoid or fusiform, 8.2-6.5 em. long, 
5.5-11.1 mm. in diameter where broadest, 2- or some- 
times 3-leaved, finely rugose in the dried specimens, ob- 
liquely ascending. Leaves ligulate or narrowly elliptic- 
ligulate,7—16.9 em. long, 6-12 mm. wide, acute to obtuse, 
long-conduplicate at base,subcoriaceous, apparently glau- 
cous, mid-nerve sometimes rather prominent. Inflores- 
cence up to 11.3 em. long (scape including the rachis) 
1- or 2-flowered as seen, with a prominent scarious sheath 
(about 3.7 em. long in the Ostlund specimen) at the base 
and near the middle of the peduncle a small amplexicaul 
scarious long-acuminate bract. Flowers large and showy, 
about 1.5—-2 em. apart. Sepals and petals maroon with 
narrow greenish white margins within, and olivaceous 
without in the dried (Ostlund) specimen, fleshy. Lateral 
sepals obliquely lanceolate, 15-19 mm. long, 4.2—-6 mm. 
wide, acuminate, dorsally carinate near the tip. Dorsal 
sepal lanceolate, 15-20 mm. long, 4-6 mm. wide. Petals 
lanceolate to elliptic-lanceolate, 14-18 mm. long, 2.7-4.5 
mm. wide, acute to acuminate. Lip pure white with pur- 
ple striae at the base of the side lobes (Ostlund specimen), 
practically simple to 8-lobed near the base, suborbicular- 
quadrate or flabellate-reniform in outline, 16-27 mm. 
long (from base of column to extreme tip of lamina), 
16-29 mm. wide, adnate to the column near the cuneate 
base, submembranaceous, abruptly broadened from a 
short-cuneate base; lateral lobes (if present) small, vari- 
able, free portion suborbicular, triangular, oblong-ovate 
or only lobulate; mid-lobe suborbicular or subquadrate- 
reniform, many times larger than the small lateral lobes, 
margin irregular and lobulate, apex apiculate, retuse or 
even deeply bilobed; dise fleshy-thickened at the base, 
[5] 
