TROPICAL AMERICAN ORCHIDS 
simple, very abruptly mucronate; lamina 8 m m . long from 
the middle of the base to the apex, including the apicule, and 
about as wide above the middle, cordately affixed to the 
apex of the column, with two small basal fleshy calli. Col¬ 
umn short, stout, about 3.7 mm. long including the terminal 
lacerate petaloid wing. 
Epidendrum dentiferum is a small plant with a com¬ 
paratively large flower. It is closely allied to E. porpax 
Reichb. f., but has taller stems, longer thinner leaves, and 
apparently smaller flowers with a lacerate-dentate column¬ 
wing. 
Costa Rica, Pejivalle, C. H. Lankester 843, May 30, 
1924. Flowers pale translucent olivaceous green. Growing 
on stems of a tree in association with Poly podium bifrons. 
(Type in Herb. Ames No. 28695.) 
Epidendrum dolabrilobum A. & S. sp. nov. Herba 
epiphytica. Caules foliosi, omnino vaginis inclusi. Folia 
lorata, obtusa, disticha. Inflorescentiae paniculatae, ramis 
brevibus. Flores pro sectione parvi. Sepala lateralia obli- 
quissime lanceolato-obovata, concava, complicato-mucro- 
nata. Sepalum dorsale oblongo-obovatum, concavum. Petala 
cuneato-spathulata, marginibus superioribus erosis. La- 
bellum trilobatum; lobis lateralibus dolabriformibus, den- 
tatis; lobo medio cuneato-quadrato, bilobato. 
Plant epiphytic, myrmecophilous, up to 60.4 cm. tall 
(lower portion missing). Stems somewhat swollen below, 
entirely concealed by striate-nervosc leaf-sheaths, pluri- 
sulcate when dry, up to 7.5 mm. in diameter below. Leaves 
lorate, 10.1-15.3 cm. long, about 1.25 cm. wide, obtuse at the 
apex, abruptly narrowed at the base, distichous, 2.2-4.3 cm. 
apart, thinly coriaceous, many-nerved with the mid-nerve 
sulcate above and prominently carinate beneath. Peduncle 
below the raceme conspicuous, up to 28.1 cm. long, entirely 
concealed by closely imbricating scarious nervose sheaths 
or in part by the fibrous remains of sheaths. Inflorescence 
paniculate, about 11.1-12.5 cm. long; the branches short, 
densely flowered, ascending, 1.5-3 cm. long, 1.5-3 cm. 
apart, distichously arranged, often bifurcate near the base. 
