Costa Rica: epiphyte in moss on tree trunk at edge of forest in 
semi-shade, Palmira, Canton Alfaro Ruiz, Province of Alajuela, at 
2200 meters altitude, buds lemon yellow, May 9, 1938, Austin Smith 
H 532; at 2400 meters altitude, buds pale greenish yellow, flowers 
pale lemon, petals [?] glandular, May 16, 1938, A.Smith H 589; epi- 
phyte on oak, at 2000 meters altitude, flowers cream-yellow with 
glandular spots, scape pale brown, May 27, 1938, A.Smith H 668 
(Tyre in Herb. Ames No. 55421): “‘Arbres des paturages 4 Palmira 
de Alfaro Ruiz, alt. 1840 [meters], 4-vii-1925, 4.M. Brenes (121) 
1825.°? 
Pleurothallis saccatilabia C. Schweinfurth sp.nov. 
Herba parvula, caespitosa. Radices numerosae. Caules 
filiformes, unifoliati. Folium anguste ellipticum vel ob- 
longo-lanceolatum, apice minute tridenticulatum, basi 
sessile, valde coriaceum. Inflorescentiae axillares, uni- 
florae. Flos parvus, carnosulus, bilabiatus. Sepalum dor- 
sale rotundato-ovatum, concavum, subacutum. Sepala 
lateralia in laminam suborbicularem concavam connata. 
Petala cuneato-spathulata. Labellum in positu naturali 
anguste triangulare, basi utrinque retrorse triangulari- 
auriculatum, medio valde saccatum. Columna brevissima, 
crassa. 
Plant small, caespitose. Roots fibrous, numerous, 
glabrous, forming dense mats. Stems filiform, up to 5 
em. long, mostly arcuate-spreading with the lower part 
concealed by oneormore close tubular evanescent sheaths. 
Leaf solitary, narrowly elliptic to oblong-lanceolate, up 
to about 5.8 cm. long and 1 em. wide, obtuse with a 
minutely tridenticulate apex, sessile at the cuneate or 
subrounded base, thickly coriaceous, in the dried speci- 
men often incurled and commonly forming an obtuse 
angle with the stem. Inflorescences fascicled in the axil of 
the leaf, 1-flowered, subtended by a conduplicate spathe. 
Flower small, distinctly pedicelled, bilabiate, rather fleshy. 
Dorsal sepal round-ovate, about 4.2 mm. long and 4mm. 
wide, subacute, concave, 3-nerved. Lateral sepals connate 
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