base within. Lip adnate to the column near the middle of 
the column; lamina simple, rotundate-cordate or cordate- 
ovate, concave, ecallose, with radiating thickened nerves 
of which the three median nerves are commonly the most 
prominent and the middle nerve is exserted on the lower 
surface and extends as a keel to the acuminate apex, 
about 6-8 mm. long from the junction with the column 
and 6—-8.4 mm. wide near the cordate base, with the an- 
terior margins on each side usually involute thus forming 
an abruptly long-acuminate or rostrate apex. Column 
short, stout, gradually dilated above, up to about 2 mm. 
long on the dorsal surface in the middle, slightly longer 
on the sides. Pollinia four, strongly complanate, ellipsoid, 
rounded or obovoid. 
The collection 4.Smith H 1092, while obviously be- 
longing to this species, bears immature flowers with 
rather smaller perianth segments and narrower lip than 
typical. 
Epidendrum cordiforme differs from EH. fundi Ames 
in having pustulose leaf-sheaths and in having dissimilar 
sepals, petals and lip. It has commonly solitary flowers 
and larger perianth than #. microcardium Schltr. It is 
much smaller in every respect than EH. ewile Ames. 
Costa Rica: epiphyte in moss on living tree in semi-shade within 
Caribbean cloud forest zone, Palmira, region of Zarcero, at 6000 feet 
altitude, flowers pale old gold changing to dull pinkish russet in ma- 
ture state, about 14 mm. long and broad when expanded, September 
27, 1937, Austin Smith A 458 (Herb. Field Mus. No. 941812); same 
habitat in subtropical zone at Palmira, Province of Alajuela, Canton 
Alfaro Ruiz, at 2200 meters altitude, “‘the very pale greenish-yellow 
[sepals] tipped obscure dusky violet: the basal part of bud (as well 
plant stems) with purplish glands. fl. opening campanulate-pale yel- 
lowish or even cream color’’, August 10, 1938, Smith H 1092; same 
habitat and locality as H 1092, semi-decumbent, “‘fls. plain sulphine 
yellow,’’ September 2, 1938, Smith H 1163; same locality as the last, 
on tree trunk in open woodland in semi-shade, at 1900 meters alti- 
[ 49 | 
