NEW OR NOTEWORTHY ORCHIDS 
and 2.5 cm. wide, the upper ones gradually shorter, rather 
abruptly narrowed to the rounded mucronate apex, slightly 
narrowed below with a conduplicate base, subcoriaceous, 
mid-nerve sulcate above and sharply carinate beneath, mar¬ 
gins often revolute in the dried plant. Inflorescences short, 
axillary, solitary, 1-flowered. Peduncle clothed with several 
scarious narrow sheaths. Lateral sepals broadly lanceolate, 
oblique, 1.9 cm. long, about 7 mm. wide near the base, acute 
with a dorsal mucro, many-nerved. Dorsal sepal oblong- 
ovate, 1.86 cm. long, 7.8-8.8 mm. wide, concave, acute with 
a dorsal mucro, many-nerved. Petals ovate-oblong, 1.6 
cm. long, 6.5-7 mm. wide, aeute, slightly oblique, many- 
nerved. Labellum simple, subquadrate-oblong, slightly con¬ 
tracted in the middle of each side, 1.43 cm. long, 6.4 mm. 
wide near the base, 5.8 mm. wide near the apex which is 
broadly rounded and slightly retuse. Disc concave to above 
the middle, the basal half with a central thickening which 
merges into a fleshy ovate-oblong callus in the middle, an¬ 
terior portion thickened, finely papillose except in the lower 
central portion. Column stout, strongly arcuate, 7-8.5 mm. 
long at the back, sometimes rugose at the summit of the 
posterior surface. 
Maxillaria Alfaroi was described from a dried plant 
with the exception of the flower which was sent separately 
preserved in formalin. It is apparently without Central 
American allies, but the foliage and habit recall Ornithidium 
Lankesteri Ames while the flower-structure simulates that 
of M. variabilis Batem. and M. foliosa A. & S. 
Costa Rica, Carretera Fuentes, A. Alfaro 284, August 
9, 1926. 1400 meters altitude. “Flowers orange yellow.” 
(Type in Herb. Ames No. 33600.) 
Maxillaria anceps A. & S. sp. nov. Herba crassa, 
caulescens. Pseudobulbi numerosi, ancipites, complanato- 
obovoidei, monophylli. Folium loratum, in apice bilobatum. 
Sepala oblonga, minute apiculata. Petala spathulato-ob- 
longa, falcata, minutissime apiculata. Labellum in circuitu 
ellipticum, parte tertia anteriore leviter trilobata, lateribus 
inferioribus erectis. 
84 
