CENTRAL AMERICAN ORCHIDS 
strongly concave sac-like base within which the labellum is 
concealed; free portion of each sepal linear-triangular, 
acute, 3-3.5 mm. long; mid-nerve of each lateral sepal 
forming a prominent carina on the outer surface. Dorsal 
sepal 8 mm. long, fleshy, hardly 1 mm. wide above the base, 
linear, acute, 1-nerved, the margins somewhat involute. 
Petals about 3 mm. long, linear, acute, very delicate in 
texture. Labellum 3 mm. long, unguiculate, 2 mm. wide 
between the lateral lobes when spread out, sagittately 
3-lobed, acute; basal lobes erect, rounded, slightly retrorse, 
forming a cordate base in front of the slender thickened claw; 
middle lobe 2 mm. long, 1 mm. wide. Disc ecallose. Column 
2.5 mm. long, with an erect tooth on each side at the summit 
in front. Clinandrium minutely denticulate behind the 
anther. 
In habit not unlike Pleurothallis rufa Rolfe, but very 
different from that species in the structure of the inflor¬ 
escence. 
Costa Rica, Cachi, C. H. Lankester 76. Leaves 
Andover-green (Ridgway). Flowers honey-yellow (Ridg- 
way), pendent. 3750-4000 feet altitude. (Type in Herb. 
Kew.) 
Pleurothallis cedralensis Ames sp. nov. Herba 
epiphytica, ramosa, vagula. Caules plus minusve erecti, 
polyphylli, vaginis hispidulis tubulatis obtecti. Folia valde 
coriacea, anguste elliptica, apice bilobulato apiculo obtuso 
interjecto, vix petiolata. Racemus simplex, elongatus sep- 
tem ad decemflorus, glaber. Rracteae inflorescentiae infun- 
dibuliformes. Pedicelli graciles, ascendentes, glabri. Flores 
sulphurei, delicatuli. Sepala lateralia lineari-triangularia, 
usque ad apicem attenuata, patentia, uninervia. Sepalum 
dorsale lanceolatum, acuminatum, acutum, trinervium. 
Petala elliptico-lanceolata, quam sepala multo breviora, 
subacuta, uninervia. Labellum trilobatum, usque ad me¬ 
dium cuneato-dilatatum lobos laterales obtusos formans, 
lobo medio lineari-oblongo, uninervio, minute papillose. 
Discus infra medium labelli trinervius. Columna gracilis, 
prope medium constricta. 
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