ORCHIDACEAE QUAEDAM AMERICANAE 
apart, those of the upper part of the raceme 2 mm. apart. 
Floral bracts 1.5 mm. long, basal portion shallowly in- 
fundibuliform, upper portion semiovate, obtuse. Pedicel 
with the ovary 2.5 mm. long, blackish when dry. Lateral 
‘ sepals deltoid-ovate, obtuse, 2-2.5 mm. long, conspicuously 
3-nerved, smooth. Dorsal sepal similar. Petals 1 mm. long, 
ovate or suborbicular, thickened nearly to the base, abruptly 
excavated below the thickening, apex minutely and ob¬ 
scurely papillose. Labellum .75 mm. long, 1.5 mm. wide, 
reniform, very fleshy, dorsal surface rounded, somewhat 
concave above with a prominent obscurely bilobed callus in 
the middle its side decurrent laterally or forming a trans- 
j verse ridge. Column slightly shorter than the petals, di¬ 
lated upwards, posterior membrane entire, margin minutely 
j papillose. 
Stelis longipetiolata is closely allied with S. microstigma 
Reichb. f., from which species it differs in its round-ovate 
petals thickened to near the base, and in its obtuse sepals. 
^ Panama, Province of Chiriqui, Humid forest between 
f Alto de las Palmas and top of Cerro de la Horqueta, W. R. 
i Maa:on 546<?, March 18, 1911. Epiphyte on trees. 2100-2268 
; meters altitude. (Type in U. S. Nat. Herb. No. 675844.) 
j 
Stelis perplexa Ames sp. nov. Herba caespitosa. 
Caules secundarii abbreviati. Folium ligulatum, utrinque 
! attenuatum. Pedunculus cum racemo elongatus, multi- 
florus. Sepala late ovata, similia. Petala subrhomboidea, 
apice obtuse angulata. Labellum subrhomboideum, callo 
prope medium disci. Columna usque ad apicem dilatata. 
, Roots fibrous, whitish, smooth. Secondary stems 
j caespitose, about 2.5 cm. high, about 1.5 mm. thick, when 
young concealed by tubular sheaths, monophyllous. Leaf 
ligulate, 5-7.5 cm. long, 6-9 mm. wide, obtusely and un¬ 
equally bilobed at the tip, tapering gradually toward the 
base, much exceeded by the raceme. Peduncle solitary, 
with the raceme up to 14 cm. long, with several short, 
tubular bracts below the raceme, erect or arcuate. Raceme 
slender, many-llowered, 8-12 cm. long. Flowers about 4 mm. 
apart. Floral bracts 1.5 mm. long, surrounding the rachis. 
