NEW OR NOTEWORTHY ORCHIDS 
raceme, glabrous peduncle, sepals which are glabrous with¬ 
out and pubescent within and distinct basal lip-auricles. 
Its smooth peduncles and smaller outwardly glabrous flow¬ 
ers distinguish this plant from P. glandulosa Ames. 
The description was drawn from herbarium specimens. 
Costa Rica, La Palma, A. M.Brenes {159) 490, Decem¬ 
ber 1, 1922. 1150 meters altitude. (Type in Herb. Ames 
No. 31116.) 
Pleurothallis cingens A. & S. sp. nov. Herba humilis, 
valida. Caulis superne folio cinctus, parte superiore bialatus. 
Folium ellipticum, obtusum et minute bilobatum, strictum. 
Inflorescentiae in medio folii orientes, perbreves. Racemi 
congesti, pauciflori. Sepala lateralia in laminam late ovatam 
connata. Sepalum dorsale spathulatum. Petala multo min¬ 
ora, oblongo-lanceolata, serrata. Labellum in circuitu 
ovatum, in apice rotundatum, supra papillosum. 
Plant 9.6-15 cm. tall. Rhizome stout, woody, ap¬ 
parently creeping (only a fragment remains). Roots fibrous, 
glabrous, flexuous. Stems remarkable in extending about 
to the lower third of the erect leaf-blade; portion up to the 
base of the leaf 4-8.7 cm. long, gradually bialate above, 
more or less 4-angled in the dried specimen, lower part in¬ 
vested by 2 loose tubular sheaths which are scarious and 
imbricating; portion surrounded by the leaf-blade 1.7-2.9 
cm. long, articulated very obliquely with the leaf. Leaf 
elliptic, 5.4-7 cm. long from the apex to the base of the 
auricles or lobes which surround the stem, up to 2.3 cm. 
wide, obtuse, coriaceous, mid-nerve prominently carinate 
beneath. Inflorescences 1-2, at the summit of the stem, 
in about the middle of the leaf. Racemes very short, con¬ 
gested, few-flowered, about 1 cm. long, lower part enveloped 
t>y a large conduplicate acuminate spathe which is up to 
Ll cm. long. Floral bracts imbricated, concave. Flowers 
very fleshy. Lateral sepals connate into a broadly ovate 
lamina which is 4.5 mm. long and about 4-4.8 mm. wide, 
rounded at the apex, 6-nerved, ciliolate, sparingly short- 
pubescent on the outer surface. Dorsal sepal spatulate. 
23 
