A 
BOTANICAL’ MUSEUM LEAFLETS 
HARVARD UNIVERSITY 
CampripGr, Massacnusertrs, Marcu 27, 1942 VoL. 10, No. 5 
ORCHIDACEAE PERUVIANAE III 
BY 
CHARLES SCHWEINFURTH 
THE FOLLOWING PAPER, the third of the series treating 
the novelties in the orchid flora of Peru, elaborates eight 
species and one variety which appear to be undescribed. 
Masdevallia pandurilabia C. Schweinfurth sp. nov. 
Herba mediocris, caespitosa, cum radicibus numerosis 
fibratis. Caules breves, vaginis paucis laxis tubulatis max- 
ima pro parte obtecti. Folium caulis apici articulatum, 
longe petiolatum; lamina obovata vel oblanceolata vel 
elliptica, apice minute tridenticulato subacuta vel rotun- 
data. Inflorescentia uniflora, folia conspicue excedens, 
gracilis, saepius laxa. Flos pro genere parvus. Sepala late 
patentia, similia, infra breviter connata, intus pubescen- 
tia, abrupte et longe caudata. Petala oblique triangulari- 
oblonga, apice inaequaliter tridentata, basi in lobum 
conspicuum triangularem extensa, antice carinata. Label- 
lum ovato-panduratum, parte basali obovato-rhombica, 
parte anteriore obovato-cuneata et truncata cum apiculo 
minuto. Columna generis, cum pede conspicuo libero. 
Plant medium-sized, caespitose, up to 20 em. high in 
the dried specimen. Roots numerous, fibrous, glabrous. 
Stem short, up to 5.5 cm. high, entirely or mostly con- 
cealed by about three loose imbricating truncate sheaths 
of which the uppermost is much the largest. Leaf soli- 
tary, articulated to the apex of the stem, long-petioled ; 
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