twice or thrice surpassed by the slender ascending pedi- 
cels. Flowers small, segments of the perianth sub- 
parallel, slightly thickened toward the apex. Lateral 
sepals free, narrowly lanceolate, 2.5 mm. long, 1— or 
obscurely 3-nerved, acute, carinate on the outer side. 
Dorsal sepal slightly longer, lanceolate, about 2.8 mm. 
long, obtuse, concave, obscurely 3-nerved. Petals 
linear-triangular, 2.5 mm. long, 1—nerved, acute, slightly 
oblique. Labellum much shorter, simple, very shortly 
clawed; lamina oblong or lanceolate-oblong in outline 
with the erect sides of the lower half slightly dilated 
from a cuneate base, about 1.4 mm. long, broadly 
rounded at the apex, 3-nerved, minutely auriculate at 
base. Column short, almost 1.2 mm. long, with an 
abrupt quadrate wing on either side of the upper half, 
extended in a foot. Anther cupuliform. 
Pleurothallis yucatanensis suggests P. sertularioides 
Lindl., but differs in having racemose inflorescences and 
simple lip. 
Mexico, Yucatan, Campeche, Tuxpena, C. L. Lun- 
dell 912, November 8, 1981. Common on tree trunks 
and old logs. (‘TyrE in Herb. Ames No. 37882). 
Epidendrum Broadwayi Ames & Schweinfurth, 
sp. NOV. 
Herba humilis, epiphytica. Caules caespitosi, 
tenuiter subclavati, omnino velati, mono-vel diphylli. 
Folia anguste linearia, graminea, acuta. Inflorescentia 
singula, quam folia multo brevior, laxe racemosa. Sepala 
lateralia oblique elliptico-lanceolata, apice conspicue 
carinato-mucronata. Sepalum dorsale oblanceolato- 
oblongum.  Petala oblanceolato-linearia. | Labellum 
apici columnae adnatum, trilobatum, lobo terminali 
majore subquadrato triangulari-acuto vel retuso et 
apiculato. 
or 
