NEW OR NOTEWORTHY ORCHIDS 
branches, entirely concealed by leaf-sheaths which are tubu¬ 
lar, imbricating, appressed and waste into fibers in the lower 
portion of the stem. Leaves lanceolate-linear, up to 3.9 cm. 
long and 6.4 mm. wide near the base, abruptly and obliquely 
bilobed at the apex, clasping at a rounded base, gradually 
narrowed above, distichous, coriaceous, numerous, widely 
spreading, those present being on the upper parts of the 
branches. Inflorescences 1-flowered, apparently one to each 
leaf-axil on the upper portions of the stem and branches, 
subequaling the subtending leaf. Peduncle filiform, con¬ 
cealed by several scarious, imbricating, ancipitous sheaths. 
Flowers white. Lateral sepals lanceolate-oblong, 10.2 mm. 
long, about 3 mm. wide near the base, oblique, subacute or 
obtuse with apex slightly carinate on the outer surface, 
5-nerved. Dorsal sepal similar, 9.6 mm. long, 2.8 mm. wide 
near the base, somewhat concave in the basal half. Petals 
oblong, slightly broader above the middle, 8.9 mm. long, 
about 2.3 mm. wide, obtuse, 3-nerved. Labellum linear- 
spatulate in outline, 10.7 mm. long, the basal two-thirds 
with sides incurved in natural position, acute; lamina when 
expanded slightly wider near the base and much dilated near 
the apex (thus pandurate), about 2 mm. wide near the base, 
about 4.3 mm. wide across the anterior rhombic dilation of 
which the outer angles are more or less lobulate. Disc in 
the basal third with a fleshy central thickening which merges 
into an oblong-quadrate free callus. Column cylindric, 
straight, about 3.1 mm. long at the back, extended into a 
stout foot at a slight angle. 
Maxillaria Valerioi suggests Camaridium dendrobioides 
Schltr., being very similar in habit and foliage, but the 
lip is quite different and the flowers are white instead of 
colored. 
The description was prepared from dried specimens. 
Costa Rica, Province of Cartago, Vicinity of Pejivalle, 
C. Standley & Juvenal Valerio 46940, February 7, 8, 
1926. About 900 meters altitude. “On tree; flowers white.” 
(Type in Herb. Ames No. 33599.) 
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