vel dolabriformes; lobus medius bifidus; discus in basi 
bicallosus, per medium lineis tribus ornatus. Columna 
apice dilatata. 
Plant epiphytic. Stems tufted, 61-97 em. long, con- 
cealed by tubular closely appressed sheaths, the upper 
ones bearing leaves. Leaves jointed, seven or more, ob- 
long-elliptic ,acuminate, acute, distichous, obliquely as- 
cending, 15-21.5 em. long, 1.8-8.5 em. wide, gradually 
diminishing in size toward the summit of the stem, more 
or less coriaceous, becoming chartaceous when dry, the 
internodes 2—4 em. long. Inflorescence an elongated sim- 
ple raceme. Peduncle below the raceme 12.2—20.6 em. 
long, mostly concealed by distichous sheathing acute 
bracts which are 3.5 em. long and which gradually pass 
into the several widely separated bracts that arise alter- 
nately below the raceme and become brownish with age. 
Raceme about 10 em. long, hardly 4 cm. in diameter, 
many-flowered. Floral bracts triangular-lanceolate.acute, 
about 5 mm. distant from one another,the lowermost ones 
sometimes 1.9 em. long and somewhat surpassing the 
shortly pedicellate ovary, the upper ones becoming grad- 
ually smaller. Flowers about equal in size to the flowers 
of 1. paniculatum Ruiz & Pavon. Segments of the peri- 
anth spreading. Lateral sepals obovate-oblanceolate, 1.2 
em. long, 8.5-4.4 mm. wide above the middle, acute, 
rather fleshy, greenish, somewhat verrucose on the outer 
surface. Dorsal sepal similar, oblanceolate, about 4 mm. 
wide above the middle, acute or subacute. Petals very 
narrowly spatulate, about 1 em. long, broadly obtuse, 
1-nerved. Labellum adnate to the column for about half 
its length, lamina or free portion sharply deflexed, con- 
vex, trilobed, cordate at the base, about 5.2 mm. long; 
lateral lobes flabellate-suborbicular or dolabriform with 
the irregular margin often lobulate in front; middle lobe 
[2] 
