CENTRAL AMERICAN ORCHIDS 
thickened, minutely glandular. Disc with a T-shaped 
callus in front of the claw. Column 3 mm. long, minutely 
glandulose, with a cornute projection near the base in front. 
This appears to be a near ally of Pleurothallis crocodi- 
liceps Reichb. f., but is much taller, with shorter, broader 
leaves, and with the sepals very much broader than the 
petals. 
Costa Rica, Cartago, La Estrella, C. H. Lankester & 
Alfredo Sancho s. n. Flower Pinard-yellow (Ridgway). 
Labellum spotted with purple. (Type in Herb. Ames 
No. 23161.) 
Pleurothallis cachensis Ames sp. nov. Caules secun- 
darii valde elongati, vagina tubulata laxe appressa vestiti, 
monophylli. Vagina scariosa in sicco, usque ad apicem 
leviter dilatata. Folium lineari-oblongum, obtusum, utrin- 
que attenuatum, racemum multo excedens, sessile. Pedun- 
culus cum racemo usque ad medium folii extentus, e va- 
ginis spathaceis oriens. Racemus subdistichiflorus. Brac- 
teae flores subtendentes satis approximatae, infundibu- 
liformes. Sepala lateralia supra medium libera, basi valde 
saccata, laminam ovatam bifidam formantia. Sepalum 
dorsale lineare, acutum. Petala linearia, acuta, uninervia, 
sepalis multo breviora. Labellum sagittatum, marginibus 
basilaribus erectis. Columna utrinque dentata, post an- 
theram denticulata. 
Secondary stems up to 14 cm. long, slender, with an 
elongated scarious sheath below the middle, monophyllous, 
hardly 2 mm. thick. Sheath 4.5 cm. long, more or less 
inflated toward the obtuse tip. Leaf about 10 cm. long, up 
to 9 mm. wide, very coriaceous, two or more times longer 
than the inflorescence, linear-oblong. Peduncle with the 
raceme up to 1.5 cm. long, arising from a scarious complanate 
sheath. Raceme about 4 cm. long, about 18-flowered. 
Bracts of the raceme infundibuliform, dilated upward, 3-4 
nim. long, interbracteal spaces 1 mm. long. Ovary about 
1 mm. long. Lateral sepals united beyond the middle, 
8 mm. long; united portion when spread out ovate, acumi¬ 
nate, bifid, 4 mm. wide, when in natural position forming a 
17 
