campanulifera Lindl. in having much larger flowers with 
more ovate sepals and a dissimilar lip. 
Puno: Prov. of Carabaya, between Ollachea and Pte. Ackopampa, 
at 3200 meters altitude, on cliffs, December 31, 1947, C. Vargas 6981 
(Type in Herb. Ames No. 65207). 
Stelis rhombilabia C. Schweinfurth sp. nov. 
Herba major, saxicola. Caules approximati, duo vel 
tres ut videtur, vaginis duabus vel tribus tubulatis con- 
spicuis tecti. Folium unicum, conspicue petiolatum; 
lamina elliptica vel oblongo-ovata, obtusa vel subacuta, 
basi late cuneata vel subrotundata. Racemi tres vel quat- 
tuor, folium multo excedentes, dense multiflori. Flores 
parvi, secundi ut videtur, valde bilabiati. Sepala triner- 
via, intus dense breviter pubescentia. Sepalum dorsale 
ovatum, breviter acuminatum. Sepala lateralia in lami- 
nam valde concavam suborbiculari-ovatam omnino con- 
nata. Petala multo minora, concava, suborbicularia, 
supra late rotundata et incrassata. Labellum sepalis sub- 
aequale, ovato-rhombicum; discus maxima pro parte 
callo carnoso arcuato occupatus. 
Plant rather large, 30 cm. or more tall. Roots fibrous, 
filiform, glabrous, very numerous. Rhizome missing in 
our specimen. Stems approximate, in pairs or threes, 
about 13-19 cm. long, clothed with two or three loose 
tubular sheaths of which the uppermost and much the 
largest is sometimes produced into an imperfect leaf- 
blade. Leaf solitary, erect, petioled, 11.7—14.8 cm. long; 
lamina elliptic or oblong-ovate, obtuse or subacute with 
a minutely tridenticulate apex, shortly cuneate to sub- 
rounded at the base, chartaceous, many-nerved, about 
10-12.6 cm. long, 3.7-5 em. wide; petiole prominent, 
suleate, about 2.2 cm. or less long. Racemes three or 
four, much surpassing the leaf, suberect, densely many- 
flowered (loose at the base), 17.7-80.2 cm. long, sub- 
tended by a narrow acute spathe about 1.5 cm. long. 
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