and Central America; through a large portion of north- 
ern South America and is one of the five orchids known 
to occur on the Galapagos Islands. In a species occurring 
over such a vast region one would expect to find consid- 
erable variation, and it is owing to this variation that we 
may ascribe the many synonyms, not to mention the 
fact that the plant has been frequently cultivated and 
variously named for horticultural purposes. 
A NEW GENUS OF THE SARCANTHINAE 
Phragmorchis L. O. Williams gen. nov. Orchida- 
cearum—Sarcanthinae— A erideae. 
Sepala lateralia ad apicem ovarii affixa, a columna 
libera. Sepalum dorsale liberum, naviculare. Petala se- 
palis similia sed minora. Labellum basicolumnae affixum, 
in saccum aut calear apice paulo bidentatum productum, 
antice in laminam ovatam productum, prope laminae 
basim in ecaleari callis duobus tenuibus ornatum; lobi 
laterales erecti, parvi. Columna mediocris, cylindracea, 
apoda, exalata, rostello brevi. Pollinia globosa, paulo 
fissa; stipes tenuis, a basi usque ad apicem sensim dila- 
tata: glandula ovata, parva. 
Herba epiphytica, caulescens cum foliis angulari- 
teretibus. Species una adhue nota, habitu Schoenorchidis. 
Caulescent, epiphytic herbs with angular-terete 
leaves. Lateral sepals adnate to the apex of the ovary, 
free from the column. Dorsal sepals free, navicular. Pet- 
als similar to the sepals but smaller. Lip adnate to the 
base of the column, prolonged at the base into a sac or 
spur which has a slightly bidentate tip: produced into 
an ovate blade in front; near the base of the blade (mid- 
lobe) in the spur are two slender calli; lateral lobes of 
the lip erect, small. Column medium-sized, cylindric, 
without a foot, without stelidia; rostellum short. Pollin- 
ia two, globose, each one slightly divided; stipe slender, 
[ 52 | 
