NEW OR NOTEWORTHY ORCHIDS 
apart on the slender rachis. Bracts of the inflorescence 
about 2 mm. long, infundibuliform, acute, diaphanous 
when dry, shorter than the pedicels. Ovary 2 mm. long. 
Flowers brown-madder when dry. Lateral sepals 3 mm. 
long, about 3.5 mm. wide, broadly ovate, rounded at base, 
obtuse, conspicuously 3-nerved, densely glandular on the 
inner surface, glandular-ciliate on the margin, smooth on 
the dorsal surface. Dorsal sepal similar and equal to the 
laterals and coherent with them at base. Petals 1 mm. long, 
1.5 mm. wide at the summit, flabellate, thickened on the 
apical margin, somewhat excavated on the inner surface 
below the summit, 3-nerved. Labellum 1 mm. long, 1 mm. 
wide, semiglobular, with an erect apicule at the apex and 
with a thickened ridge along the middle of the upper surface, 
margin more or less erect to form a thin rim along the sides 
and in front. Column dilated upward, obscurely 3-lobed 
at the summit, otherwise entire. Pollinia two, pyriform. 
Allied with Stelis parvibracteata Ames, from which it 
differs conspicuously in the larger flowers, which are much 
more glandular on the inner surface of the sepals, and in 
the flowers being farther apart on the elongated rachis. 
Stelis Endresii Reichb. f. has smaller flowers and a different 
labellum. 
Costa Rica, C. H. Lankester. (Type in Herb. Ames 
No. 22860 from a plant cultivated in Hort. Rot. Reg. Kew. 
Duplicate from the type plant in Herb. Kew.) 
Stelis Lankesteri Ames sp. nov. Herba caespitosa, 
epiphytica. Caules secundarii vaginis inflatis complanatis 
invest!, monophylli. Folium petiolatum. Lamina folii 
oblongo-elliptica, apice bilobata, apiculo interjecto, coriacea. 
Flores permagni, in racemum sublaxum dispositi, purpurei. 
Sepala lateralia laminam suborbicularem formantia, novem- 
nervia. Sepalum dorsale simile. Petala rhombica, valde 
incrassata. Labellum valde incrassatum. Columna a basi 
dilatata. 
Caespitose epiphytic herb, 20-22 cm. tall to apex of 
the inflorescence. Secondary stems erect or ascending, 
4 cm. or more long, concealed by ample sheaths, the up- 
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