NEW OR NOTEWORTHY ORCHIDS 
sessile base, complicate-acute at the apex, commonly re¬ 
curved in the dried specimen. Racemes terminal, very short, 
loosely 2- to 3-flowered, up to 1.7 cm. long, base concealed 
by imbricating sheaths; rachis fractiflex. Floral bracts con¬ 
spicuous, round-ovate, clasping and slightly surpassing 
the immature ovary, tubular-involute in the dried plant. 
Perianth parts rigid-nervose, spreading. Lateral sepals ob¬ 
liquely oblong-lanceolate, 8.7-9.1 mm. long, 3-3.3 mm. wide 
below the middle, acute, with a high keel near the apex on 
the outer surface. Dorsal sepal elliptic-lanceolate, 8-8.4 
mm. long, 2.8-3 mm. wide, obtuse, ecarinate. Petals ob- 
lanceolate-linear, about 8.5 mm. long, subacute. Labellum 
adnate to the column nearly to the tip; lamina simple, 
ovate, with upcurved sides in natural position, strongly cor¬ 
date at base, about 5.7 mm. long in the center, about 4.4 
nim. wide near the base when spread out, obtuse or abruptly 
mucronate, margins somewhat repand, with a tridentate 
basal callus of which the lateral teeth are abbreviated and 
the middle division extends as a fleshy keel nearly to the 
apex. Column short and very stout, 4-5 mm. long at the 
concave back, very much dilated in front. 
This description was prepared from dried specimens. 
Epidendrum guanacastense recalls E. isomerum Schltr., 
but it has very dissimilar perianth parts. It is distinguished 
from E. ramosissimum A. & S. by its different flowers. 
Costa Rica, Province of Guanacaste, El Arenal, Paul 
C- Standleg & Juvenal Valerio 45089, January 18-19, 1926. 
485-600 meters altitude. “On tree; flowers greenish yellow.” 
(Type in Herb. Ames No. 33499): Province of Guanacaste, 
La Tejona, North of Tilaran, Standleg <& Valerio 46041, 
January 25, 1926. 600-700 meters altitude. “On tree.” 
(Flowers passe; leaves sometimes exceeding 13 cm. long.) 
Epidendrum intermixtum A. & S. sp. nov. Herba 
ofata. Caules vaginis arctis valde verrucosis omnino ob- 
tccti. Folia disticha, oblongo-elliptica vel oblongo-lanceo- 
rata, in apice rotundata. Inflorescentiae paniculatae vel 
I'acemosae, terminales atque laterales. Sepala lateralia ob- 
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