ORCHIDACEAE QUAEDAM AMERICANAE 
entire or sparingly sinuous, narrowed abruptly into a wide 
isthmus. Disc provided with a cushion-like callus, from the 
tip of which three raised nerves arise; from near its base, 
one on each side, two thickened nerves extend nearly to the 
tip of the middle lobe. Column 6 mm. long, purplish, 
conspicuously 3-lobed at the summit, the lateral lobes 
rounded at the tip and porrect, under surface beneath the 
stigma glandular-hairy. 
Closely allied to Epidendrum venosum Lindl., from 
which it differs conspicuously in size, in having acute lateral 
lobes, and a round mid-lobe. 
Mexico, State of Jalisco, Sierra del Olo, M. L. Diguet 
s.n.. May 1902. Flowers white and yellow. Growing on oak 
trees. 2000 meters altitude. (Type in Herb. Ames No. 
22492. Duplicate type in Herb. Mus. Par.) 
Epidendrum magnibracteatum Ames sp. nov. Caules 
validi, complanati, foliosi. Folia oblonga, valde obtusa, 
apice bilobata. Pedunculus bracteis ancipitibus tectus. 
Bracteae inflorescentiae permagnae, conduplicatae, flores 
aequantes, apice carinatae. Flores in racemo laxo dispositi, 
distichi. Sepala lateralia ovato-lanceolata, apice carinata. 
Sepalum dorsale oblongo-lanceolatum, apice rostriforme. 
Petala lineari-oblonga, nervo medio prominenti, obtusa. 
Labellum cordato-reniforme, nervo valde incrassato in medio 
disci, prope apicem callo carunculato ornatum. Columna 
incrassata. 
Stems stout, about 25 cm. long, complanate. Leaves 
10-15 cm. long, 2-4 cm. wide, broadly ligulate, oblong, about 
14 wide across the bilobed tip, heavily carinate, alternate, 
jointed to rigid sheaths which are 3-5 cm. long and com¬ 
planate. Inflorescence terminal, 1.4-2 dm. long. Peduncle 
concealed by large imbricating rather closely oppressed 
sheathing bracts, about 4 cm. long, carinate. Bracts sub¬ 
tending the flowers similar to those that conceal the peduncle, 
about 4 cm. long,conduplicate, carinate, completely enclosing 
the pedicellate ovary, rigid, coriaceous. Raceme about 1 dm. 
long, flowers about eight, alternate, about 2 cm. apart. 
Pedicel with the ovary about 1.5 cm. long, stout. Lateral 
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