NEW OR NOTEWORTHY ORCHIDS 
denticulate vel breviter fimbriato, utrinque prope unguem 
callosum. Columna gracilis, utrinque triangulari-alata, alis 
dependentibus acuminatis acutis; clinandrio post antheram 
longe producto. 
A small epiphytic herb up to 4 cm. high, with the flowers 
more or less concealed among the secondary stems and 
leaves in the manner of Masdevallia Simula Reichb. f. 
Secondary stems 6 mm. long, caespitose, monophyllous, vag- 
inate. Sheaths equaling or exceeding the secondary stems, 
scarious. Leaf up to 3 cm. long, about 2 mm. wide, bilob- 
ulate at the tip with a short apicule between the lobules, 
narrowed toward the base, linear, coriaceous. Peduncle 
with the pedicellate ovary about 1 cm. long, slender, 
1-flowered. Lateral sepals united almost to the middle, 
ovate, 5 mm. long to the tip, free portion up to 2 mm. wide, 
3-nerved, caudate, the tail 2 mm. long being the prolongation 
of a carinate median nerve. Dorsal sepal 7 mm. long in¬ 
cluding the caudate tip, 2 mm. wide, the caudate tip 3 mm. 
long, tricarinate, the median keel prominent. Petals 2 mm. 
long, variable, about 2 mm. wide below the tip, dolabriform, 
emarginate on the anterior margin, obtuse; below the middle 
on the upper half — on the inner surface — a papilliform 
callus is situated on or near the anterior margin. Labellum 
2.5 mm. long, 1.5 mm. wide near the tip, unguiculate, 
sagittately 3-lobed; the lateral lobes or auricles retrorse, 
parallel with or appressed to the claw, with a prominent 
complanate callus at the base of each lobe; middle lobe 
subacute, round-obtuse in front, the lateral margins den¬ 
ticulate or fimbriate. Column 3 mm. long, produced at base 
into a short foot, on each side near the summit with a 
deflexed or pendent triangular-acuminate acute wing; cli- 
nandrium obscurely crenulate, produced behind the anther 
into a linear denticulate membrane. 
Closely allied to Masdevallia Simula Reichb. f., but 
clearly distinguished from that species by the strongly 
caudate sepals, and by differences in the structure of the 
labellum and column. From M. gualemalensis Schltr. it 
differs also in having caudate sepals. 
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