tum, valde concavum. Sepala lateralia similia, paulo 
majora. Petala anguste rhombico-lanceolata, dense fim- 
briata. Labellum leviter trilobatum, per medium incras- 
satum, in positu naturali tubulari-involutum, apice late 
rotundatum. Columna generis. | 
Plant tall, stout, terrestrial, about 8.8 dm. high. Roots 
a fascicle of stout tuberoids. Stem stout, mostly con- 
cealed by strict linear-lanceolate sheaths with long tub- 
ular sheathing bases, glabrous below, densely tomentose 
above. Leaves basal, rosulate, 5 to 6, suberect, oblong- 
linear, acute or shortly acuminate, sheathing and imbri- 
cated at the base, up to about 26 cm. long and 1.8 cm. 
wide, membranaceous in the dried specimens with the 
mid-nerve prominently carinate beneath. Spike lax, cy- 
lindric, elongate, 18-19 cm. long (with the upper portion 
immature in our specimens), many-flowered; rachis 
densely tomentose. Floral bracts triangular-lanceolate, 
long-acuminate, 5-nerved, densely tomentose without, 
about equaling the mature flowers. Perianth inverted, as 
in the genus, ringent. Sepals and petals densely pubescent 
on the outer surface. Dorsal sepal oblong-oblanceolate 
or elliptic-lanceolate, deeply concave, about 11 mm. long 
and 4.4 mm. wide, subacute or obtuse, 3-nerved, forming 
a galea with the petals. Lateral sepals elliptic-lanceolate, 
deeply concave at base, about 18.5-14 mm. long and 5 
mm. wide, acute, 4- or 5-nerved, slightly oblique. Petals 
narrowly rhombic-lanceolate, obtuse, densely fimbriate 
except at the apex and near the base, about 12 mm. long 
and 4 mm. wide, 3-nerved, arcuate-oblique at the base. 
Lip lightly 3-lobed, in natural position tubular-involute 
and arcuate-recurved with the lateral lobes embracing 
the column, about 11.5 mm. long including the short 
claw, fleshy-thickened through the center, ovate-oblong 
in outline, broadly rounded or subtruncate at the concave 
apex; lateral lobes shallowly semiorbicular; mid-lobe 
[ 59 | 
