NEW OR NOTEWORTHY ORCHIDS 
from below the middle, finely pubescent. Racemes about 
8- to 18-flowered, spreading. Flowers very small, distichous, 
white. Lateral sepals ovate-oblong, about 1.8 mm. in length 
along the posterior margin, subacute, oblique, 1-nerved, 
minutely connate with the dorsal sepal at base. Dorsal 
sepal ovate, 1.4 mm. long, obtuse and cucullate at the apex, 
1-nerved. Petals obliquely elliptic-lanceolate, about 1.4 
mm. long, obtuse or subacute, 1-nerved. Labellum broadly 
ovate in outline, about 1.7 mm. long and somewhat wider 
at the base when spread out, sharply 3-lobed below the 
middle; lateral lobes small with incurved triangular acute 
apex; middle lobe much larger, triangular-ovate, rounded 
at the apex, pubescent on the inner surface. Spur curved, 
cylindric-clavate, nearly 2.8 mm. long. Column minute. 
Anther suborbicular, flattish with a thickened circular disc 
at the base. Ovary finely pubescent. 
This species was described from herbarium specimens. 
The floral measurements were taken only from the type 
collection, as the two other collections bore withered flowers 
of rather smaller size on the summit of matured ovaries. 
Campylocentrum longicalcaratum is most nearly allied to 
C. Brenesii Schltr., but it differs from that species in its 
dense-flowered inflorescences, blunter perianth segments and 
longer spur. It is unlike C. parvulum Schltr. in its larger 
flowers and curved spur. 
Costa Rica, La Estrella, C. H. Lankester 1013, July 
23, 1925. Flowers white, bracts pinkish straw-color. (Type 
in Herb. Ames No. 33651); La Palma, A. M. Brenes (139) 
469, November 18, 1922. 1120 meters altitude; Rrenes {32) 
362, October 30, 1922. 1190 meters altitude. 
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