CENTRAL AMERICAN ORCHIDS 
is found in the more open throat of Masdevallia Livingston- 
eana caused by the lateral lobes of the calyx being deflexed as 
Reichenbach described them. 
What I take to be Masdevallia Livingstoneana is rep¬ 
resented by a specimen submitted by Mr. Powell. This is 
No. 78 of the Panama series. As far as one can tell by com¬ 
paring a dried flower with a water-color drawing, this speci¬ 
men is probably M. Livingstoneana, and may temporarily be 
taken to represent that species. 
Stelis cascajalensis Ames sp. nov. Caules secundarii 
elongati, vaginati, monophylli. Folium coriaceum, ob- 
longo-ellipticum, in sicco nervosum, usque ad basim at- 
tenuatum. Vagina pedunculi abbreviata, complanata. Pe- 
dunculus elongatus, folio multo longior. Bracteae inflores- 
centiae distichae, inter se distantes. Pedicellus cum ovario 
bracteam excedens, gracilis. Flores permagni, purpurei. 
Sepala lateralia deltoideo-ovata, quinquenervia, obtusa. 
Sepalum dorsale simile. Petala valde incrassata, subfla- 
bellata, truncata. Labellum carnosum, quadrato-dolabri- 
forme, apice oblique truncatum, prope apicem minute 
apiculatum, apiculo erecto. Discus leviter excavatus, per 
medium leviter carinatus. Columna apice valde dilatata. 
Secondary stems erect, 4.5 cm. or more long, for the 
most part concealed by an elongated tubular sheath, mono- 
phyllous. Leaf 10.5 cm. long, 2.7 cm. wide, elliptic-oblanceo- 
late, obtuse, narrowed toward the base, much shorter than 
the peduncle. Sheath at base of peduncle in axil of the 
leaf 1 cm. long, complanate. Peduncle about 17 cm. long, 
floriferous nearly to the base, the raceme being 14 cm. long. 
Bracts of the raceme about 8 mm. apart, distichous, 3.5 mm. 
long, subinfundibuliform, obliquely truncate. Pedicel with 
the ovary up to 8 mm. long, slender, somewhat drooping. 
Flowers translucent, purplish, about 12 mm. in diameter 
when the sepals are spread out. Lateral sepals 5.5 mm. 
long, 6.5 mm. wide, deltoid-ovate, obtuse, 5-nerved. Dorsal 
sepal similar. Petals 1.5 mm. long, 2 mm. wide across the 
tip, fleshy-thickened, subflabellate, truncate. Labellum 
1 mm. long, 1 mm. wide, quadrate-dolabriform, obliquely 
11 
