CENTRAL AMERICAN ORCHIDS 
in texture similar to the petals, ecallose. Column 2 mm. 
long, rostellum dilated, deflexed over the stigma. 
In habit Pleurothallis pergrata resembles Pleurothallis 
Williamsii Ames, a native of Panama, but differs in having 
the flower-stalks much shorter than the leaves, in the 
caudate sepals and in the dissimilar labellum which lacks 
carinae on the upper surface. 
Costa Rica, Cartago, La Estrella, C. H. Lankester & 
Alfredo Sancho 436. Flowers pansy-purple (Ridgway). 
5000 feet altitude. (Type in Herb. Ames No. 23721.) 
Pleurothallis saccata Ames sp. nov. Caules secun- 
darii elongati, validi, erecti, monophylli. Folium ellipticum 
vel ovato-ellipticum, valde coriaceum, basi cordatum. Pe- 
dunculi folium aequantes, fasciculati. Bracteae infra race- 
mum tubulatae, arete appressae, apice vix dilatatae. Brac¬ 
teae flores subtendentes anguste infundibuliformes. Race- 
mus arcuatus, floribus numerosis secundis purpureo-macu- 
latis. Sepala lateralia usque ad apicem cohaerentia, saccum 
semiovatum formantia, extus utrinque carinata, carinis 
usque ad apicem extensis. Sepalum dorsale ellipticum, ob- 
tusum, trinervium, porrectum. Petala clavato-spathulata, 
supra medium valde incrassata, obtusa. Labellum basi 
arrectum, statim deflexum, basi ipsa columnam amplec- 
tenti, valde incrassatum, oblongum, apice rotundatum, 
minute apiculatum, basi cordatum, auriculis basilaribus 
retrorsis leviter incurvis triangularibus. Discus bicallosus, 
callis prope basim labelli prominentibus. Columna carnosa. 
Epiphytic herb. Secondary stem stout, elongated, 
erect, 4 mm. in diameter near the base of the leaf. Leaf in¬ 
complete, apparently up to 15 cm. long, 9 cm. more or less 
wide, ovate-elliptic, leathery, rigid, nervose, cordate at base. 
Peduncles fasciculate, four or five in each fascicle, with the 
raceme up to 10 cm. long. Bracts below the raceme about 
4 mm. long, closely oppressed, tubular, hardly dilated at the 
summit. Bracts of the raceme about 3.5 mm. long, tubular, 
hardly dilated, obliquely truncate at the apex. Pedicellate 
ovary about 4 mm. long. Flowers more or less secund, 
cream color spotted with purple, globular in aspect. Lateral 
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