Panama: Canal Zone, about 2 miles west of Gatun Dam, at about 
184 meters altitude, April 1, 1939 (blooming time), Butcher s.n. (Type 
in Herb. Ames No, 64244). 
Brassia Allenii L. O. Williams ex C. Schweinfurth 
sp. nov. 
Herba epiphytica, robusta, sine pseudobulbo caulique. 
Vaginarum foliiferarum fasciculus flabelliformis. Vaginae 
conduplicatae, imbricatae. Folia oblanceolata vel ob- 
longo-lanceolata vel lineari-oblanceolata, oblique acuta. 
Inflorescentia lateralis, axillaris, foliis brevior, laxe pau- 
ciflora. Flores pro genere parvi. Sepala similia, lineari- 
lanceolata, supra longe attenuata. Petala quam sepala 
breviora et latiora, oblique et anguste lanceolata, longe 
attenuata. Labellum ovatum vel suborbiculari-ovatum, 
antice abrupte in apicem anguste triangularem produc- 
tum; discus callis duobus brevibus carnosis apice in den- 
tem productis ornatus. Columna abbreviata, crassa. 
Plant epiphytic, more or less robust. Roots fibrous, 
glabrous, stout, numerous. Stems or pseudobulbs lack- 
ing, their place being taken by a flabellate cluster of leaf- 
bearing sheaths. Leaf-sheaths several to numerous, im- 
bricating, conduplicate, nervose, surrounded on each side 
by abbreviated often non-leaf-bearing sheaths. Leaves 
oblanceolate to oblong-lanceolate or linear-oblanceolate, 
very obliquely acute with one side of the apex much 
surpassing the other, gradually narrowed to a complicate 
or conduplicate base, plicate, many-nerved with about 
seven to nine nerves prominently exserted beneath, com- 
monly about 18.5-830 cm. long and 2.3—2.7 (rarely 3.8) 
cm. wide. Inflorescence in the axil of an upper leaf- 
sheath, loosely 6- to 7-flowered from near the base, dis- 
tinctly shorter than the leaves, gently recurved. Floral 
bracts conspicuous, deeply concave, ovate, amplexicaul, 
acute or acuminate, scarious, many-nerved, slightly sur- 
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