NEW OR NOTEWORTHY ORCHIDS 
gracilis. Racemus laxiflorus, floribus inter se satis distan- 
tibus. Sepala lateralia usque ad apicem cohaerentia, laminam 
lanceolatam formantia, apice laminae obtusa, cucullata. 
Sepalum dorsale lanceolatum, apice cucullatum. Petala 
lanceolata, margine denticulata, nervo medio claviformi. 
Labellum sagittatum, auriculis basilaribus rotundatis, lobo 
medio triquetro. Columna prope medium constricta. 
Secondary stem about 3.5 cm. long, approximately 
1 mm. in diameter, vaginate, monophyllous. Leaf elliptic- 
oblong, about 5 cm. long, 1.8 cm. wide, coriaceous, epetiolate. 
Peduncle with the raceme 8 cm. or more long, about 
twice longer than the leaf, sheathed at base by an ancipi- 
tous sheath. Raceme loosely 8-flowered, 5.5 cm. long. 
Bracts of the inflorescence 2.5-3 mm. long, infundibuliform, 
diaphanous, much exceeded by the pedicellate ovary, 
which is about 8 mm. long. Lateral sepals 8 mm. long, 
coherent up to the apex, forming a 4-nerved lanceolate 
lamina which is 3 mm. wide below the middle and dis¬ 
tinctly cucullate at the obtuse tip. Dorsal sepal 7.5 mm. 
long, lanceolate, about 2 mm. wide, strongly concave, cucul¬ 
late at the obtuse tip, 3-nerved, the lateral nerves closed 
(that is, confluent with the mid-nerve about 2 mm. below 
its tip). Petals 6 mm. long, nearly 2 mm. wide, lanceolate, 
acuminate, acute, denticulate on the margin, triquetrous 
at the tip, 3-nerved with the median nerve slenderly cla- 
vate at the tip, the lateral nerves much shorter. Labellum 
2 mm. long, sagittately 3-lobed in outline when spread out, 
about 1.5 mm. wide near the base; the basal lobules more 
or less erect and obtuse; the middle lobe 1 mm. long, 
linear-triangular, subacute, triquetrous, with a claviform 
nerve in the middle. Disc between the lateral lobes much 
thickened, with a transverse ridge near the anterior end. 
Column 2 mm. long, dilated at the base and at the sum¬ 
mit, slightly constricted near the middle, margin of the 
clinandrium entire. 
The flowers appear to have been tinged with purple. 
There are no near allies of this species in Central America 
if we except Pleurothallis dentipetala Rolfe and P. Rowleei 
Ames. From P. dentipetala it is readily distinguished by 
6 
