complanate, unifoliate, about 2.8 cm. or less long, sur- 
rounded and surpassed by relatively large distichous pus- 
tulose triangular sheaths which waste into fibres. Leaf 
petioled; lamina linear, sharply acute, cuneate below, 
coriaceous, with the mid-nerve suleate above and prom- 
inently carinate beneath, about 14cm. or less long, up to 
8 mm. wide; petiole short, slender, deeply channelled, 
about 1.5 em. or less long. Scapes lateral, basal, very 
short, 1-flowered; peduncle entirely concealed by a few 
loose tubular imbricating sheaths, about 8.2 em. high; 
pedicellate ovary about 1.2 cm. long. Flower white and 
yellow, large for the plant. Dorsal sepal linear-lanceolate, 
complicate-acute, apiculate, dorsally lightly carinate near 
the apex, concave near the base, about 2.7 cm. long, al- 
most 4mm. wide below. Lateral sepals lanceolate-linear, 
lightly oblique, acute, apiculate, forming with the short 
column-foot an inconspicuous mentum, about 2.7 ¢m. 
long, 3-4 mm. wide at the base. Petals obliquely linear- 
triangular, acuminate, about 2.45 cm. long and 2.8 mm. 
wide near the base. Lip relatively very short, erect, par- 
allel to the column, lightly recurved and about 9.5 mm. 
long, with upcurved sides in natural position, sessile, 
sharply 3-lobed about two thirds the distance from the 
base, elliptic-ovate in outline when expanded; lateral 
lobes erect, narrow, terminating in ashort ovate-rounded 
free portion; mid-lobe triangular-ovate, short-acuminate, 
very fleshy and minute-papillose, about 4mm. long; dise 
through the center of the lower half with a longitudinal 
thickening which becomes a conspicuous fleshy oblong 
suleate callus above. Column very small, lightly arcuate, 
about 5.5 mm. long at the back, produced into a short 
foot. 
Florally this species is very close to Maaillaria ochro- 
leuca Lodd. ex Lindl., but vegetatively it is very much 
smaller with acute leaves. It is apparently similar to J. 
[ 290 ] 
