a memes naiadaienh aladdin’ candidal canteen CET 
BOTANICAL MUSEUM LEAFLETS 
HARVARD UNIVERSITY 
CampripGr, Massacnusetts, Marcu 3, 1937 VoL. 4, No. 7 
NEW ORCHIDS FROM MIDDLE AMERICA 
BY 
CHARLES SCHWEINFURTH 
THE FOLLOWING ORCHIDS, which appear to be unde- 
scribed, range from Mexico, through Central America to 
Panama. They are chiefly taken from the extensive col- 
lections of Erik M. Ostlund in Mexico, of A.M. Brenes 
in Costa Rica and of A. A. Hunter and P. H. Allen in 
Panama. From these collections, it seems evident that 
the vast areas of Mexico, the Republic of Costa Rica and 
parts of Panama (notably the Province of Coclé) are still 
rich in unrecorded species. 
The sequence of genera follows, according to our usu- 
al practice, that of Pfitzer in Engler and Prantl’s ‘‘Die 
nattirliichen Pflanzenfamilien. ’’ 
Spiranthes affinis C. Schweinfurth sp. nov. 
Herba terrestris, gracillima, radicibus fusiformibus. 
Caulis glaber, vaginatus, aphyllus ut videtur. Racemus 
gracilis, spiralis, dense multiflorus. Flores parvi, patentes. 
Sepala uninervia. Sepalum dorsale elliptico-ovatum, con- 
‘avum. Sepala lateralia oblongo-lanceolata. Petala late 
oblonga vel spathulato-oblonga. Labellum pandurato- 
subquadratum, basi bicallosum, parte anteriore leviter 
undulata, apice late truncatum. Columna superne dila- 
tata; anthera comparate magna, suborbicularis, concava. 
Plant terrestrial, very slender, closely resembling SS. 
[101 ] 
