uppermost is the longest, unifoliate at the summit. Leaf 
elliptic or oblong-elliptic, erect, shortly and rather abrupt- 
ly petioled; lamina obtuse to rounded and minutely tri- 
denticulate at the apex, broadly cuneate at the base, 
up to 8.5 cm. long and 2.8 cm. wide; petiole stout, 
channelled, about 6 mm. long. Inflorescence solitary, 
erect, much exceeding the leaf, about 13.5 cm. long. 
Peduncle up to the raceme about 5.7 cm. long, clasped 
at base by aconduplicate spathe and above by two remote 
infundibuliform sheathing bracts. Raceme about 7.5 cm. 
long, subdensely many-flowered, with secund flowers. 
Floral bracts conspicuous, spreading, rotundate-ovate, 
apiculate, with auriculate-clasping base, membranaceous, 
up to 6.5 mm. long. Flowers rather small, glabrous, cu- 
puliform. Sepals connate almost to the middle, 3-nerved. 
Dorsal sepal about 4.8 mm. long; free portion broadly 
ovate, obtuse to subacute, about 8.7 mm. wide. Lateral 
sepals round-ovate, a little shorter and broader than the 
dorsal sepal. Petals minute, transversely rhombic-ovate 
with a fleshy-thickened anterior half, 8-nerved, rounded 
at the apex, about 1.7 mm. long. Lip about equal to the 
petals, fleshy, concave in natural position, sessile, ovate, 
rounded at the apex, with a transverse fleshy bilobed 
ridge across the rather abruptly dilated base, about 1.9 
mim. long and slightly narrower across the lower portion. 
Column very short and stout, about 2.2 mm. long, slight- 
ly dilated from the base, irregularly lobulate above. 
Stelis grandibracteata is apparently allied to 8. lowen- 
sis Lindl., but differs in having larger elliptic leaves and 
dissimilar lateral sepals. In floral structure it is reminis- 
cent of S. thecoglossa Reichb. f., but the conspicuous 
spreading floral bracts are diagnostic. 
Cuzco: ‘‘Pillahuata,’’ Cerro de Cusilluyoc, along Rio Pillahuata, 
at 2300-2400 meters altitude, epiphytic in forest, perianth ‘‘dark 
perilla purple,’’ May 3-6, 1925, Francis W. Pennell 14006 (Tyrer in 
Herb. Ames No. 59569). 
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