BOTANICAL MUSEUM LEAFLETS 
HARVARD UNIVERSITY 
Voit. 15, No. 1 
CamsripGe, Massacunusetts, May 25, 1951 
ORCHIDACEAE PERUVIANAE VII 
BY 
CHARLES SCHWEINFURTH 
In THE following article, which is the seventh in the 
series concerning Peruvian orchids, there are descrip- 
tions of fourteen new species, with accompanying plates, 
together with several new varieties and nomenclatorial 
notes. 
The sequence of the species follows the system pro- 
posed by R. Schlechter in Notizblatt des Botanischen 
Gartens und Museums Berlin-Dahlem 9 (1926) 563-591. 
Pogonia Vargasii C. Schweinfurth sp. nov. 
Herba terrestris, stricta. Caulis cum vagina unica sub- 
tus et foliis paucis remotis supra ornatus. Folia oblongo- 
lanceolata vel lineari-lanceolata, acuta vel acuminata, 
sessilia, amplexicaulia. Flores saepissime duo, remoti, pro 
genere parvi, punicei. Sepalum dorsale lanceolato-oblon- 
gum, acutum. Sepala lateralia similia sed angustiora, 
anguste elliptico-oblonga. Petala oblongo-elliptica vel 
anguste obovato-oblonga, sepalis breviora sed multo lat- 
iora. Labellum in circuitu elliptico-ovatum vel oblongo- 
ovatum, supra trilobatum, cum lobo terminali parvo et 
rotundato-obovato; discus fascia mediana lata multipap- 
illosa percursus. Columna segmentis ceteris brevior. 
Plant terrestrial, strict, more or less slender. Root 
solitary, tuberous, straight, lanuginose, about 8.2 cm. 
or less long, sometimes with small lateral rootlets. Stem 
[1] 
