NEW OR NOTEWORTHY ORCHIDS 
roots, monophyllous, invested by 2 loose scarious sheaths. 
Leaf elliptic, up to 7 mm. long and 3.2 mm. wide, minutely 
tridenticulate with prominent central mucro, very shortly 
petioled. Peduncle very slender, about 7 mm. long, with 
an inconspicuous sheath at base and near the middle. 
Flower large for the plant, but small for the genus, dull pale 
yellow. Ovary turbinate, bearing a filiform appendage, 
surrounded by a loose infundibuliform, abruptly mucronate 
sheath. Lateral sepals connate into a lanceolate caudate- 
acuminate lamina, 5.2 mm. long, 1.6 mm. wide, 2-nerved, 
obtuse at the tip. Dorsal sepal ovate-lanceolate, about 6 
lum. long, 2 mm. wide near the base, shortly caudate, 1- 
nerved (3-nerved at the base), shortly ciliate. Petals very 
similar to the dorsal sepal but a little shorter, slightly 
oblique. Labellum transversely rhombic in outline, 1.5-1.9 
mm. long, 3-3.8 mm. wide across the middle, 3-lobed; lateral 
lobes triangular, widely spreading; middle lobe semiorbicular, 
upiculate; disc 3-nerved, provided in the middle with a large 
rounded fleshy callus. Column short and stout, dilated up- 
''^ard, about 1 mm. high, terminating on each side in a short 
triangular tooth. 
Brachionidium pusillum appears to be remotely allied 
to B. parvum Cogn., but it has smaller leaves, shorter pe¬ 
duncles and a single prominent lip-callus. 
This genus was hitherto unrecorded from Central 
America. B. pusillum was described from dried plants 
and from material preserved in alcohol. 
Costa Rica, Province of Heredia, Yerba Buena, North¬ 
east of San Isidro, Paul C. Standley & Juvenal Valerio 
49068, February 22, 28, 1926. About 2000 meters altitude. 
(Type in Herb. Ames No. 33204.) 
Brachionidium Valerioi A. & S. sp. nov. Herba 
epiphytica, pusilla. Rhizoma longissime repens, radices 
simplices comparate crassas fibratas remote emittens. Caules 
Perbreves, folium singulum atque florem unicum ferentes. 
Folia elliptica, parva, in apice acuto minute tridenticulata. 
I'los pro planta magnus. Sepala lateralia in laminam late 
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