5 mm. long and 2.6 mm. wide near the base and apex, 
acute, 8-nerved, with a pair of obliquely ovate-triangular 
incurved sharply acute lobules near the base; terminal 
portion broadly obovate with lacerate margins; disc 
adorned with numerous dense papillae and with a pair 
of keels extending from the middle of the lateral lobules 
(where they are broad and flat) to above the middle. 
Column small, arcuate, dilated above, with an irregu- 
larly 3-lobed and dentate apex, about 3.6 mm. high at 
the back. 
This species differs from the Costa Rican Pleurothallis 
pulosissima Schltr. in having shorter broader leaves, nar- 
rower lateral sepals and a dissimilar lip. 
Junin: Prov. of Tarma, Agua Dulce, at 1800 meters altitude, rare, 
epiphyte among mosses on a tree in tall forest, March 15, 1948, F. 
Woytkowski 35475 (Type in Herb. Ames No. 65977; Isorype in 
Univ. Calif. ). 
Pleurothallis juninensis Sch/tr. var. angustifolia 
C. Schweinfurth var. nov. 
Haec planta foliis angustis, oblongis vel linearibus cum 
basi late cuneata vel rotundata vel subcordata a typo 
differt. 
Plant caespitose. Stems numerous, 4.5-15 cm. high, 
unifoliate. Leaf erect or horizontally spreading, oblong 
or lanceolate-oblong to linear, more or less narrowed to 
a tridenticulate apex, broadly cuneate to rounded or sub- 
cordate at the base, 4.8-8.5 cm. long, up to 1.4 cm. 
wide, more fleshy in consistency than usual in the type. 
Flowers similar to those of the typical form, but with 
slightly shorter and broader sepals. 
Hvuanuco: Yanano, at about 1800 meters altitude, epiphyte on 
mossy tree, May 138-16, 1923, J. Francis Macbride 3847 (Tyrr in 
Herb. Field Mus. 534910; Isoryer in Herb. Ames No. 60946). 
Junin: Chanchamayo Valley, at 1200 meters altitude, August 
1929, Carlos Schunke 1123. 
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