The single Peruvian collection referred to this variety 
differs from the typical (Panamanian) form in its much 
greater height, its longer naked basal portion of the stem, 
its shorter floral bracts and its longer spur. Its leaves are 
in a very imperfect condition. 
Lorero: Mishuyacu near Iquitos, at about 100 meters altitude, in 
dense forest, September 24-28, 1929, E.P. Killip & A.C.Smith 29880, 
(Tyre in Herb. Ames No. 43511). 
Habenaria dentifera C. Schweinfurth sp. nov. 
Herba terrestris, elata. Caulis inferne vaginis tubulatis 
solum obtectus, supra foliosus. Folia lanceolata vel 
elliptico-lanceolata, acuminata. Racemus longus, laxe 
multiflorus. Sepalum dorsale comparate parvum, sub- 
orbiculare ut videtur, valde cucullatum. Sepala lateralia 
faleato-semiorbicularia, valde obtusa. Petala bilobata; 
lobus posterior subquadratus, apice dilatato inaequaliter 
tridentatus; lobus anterior minor, lanceolato-dentiformis. 
Labellum lineare, basi utrinque unidentatum. Calcar 
tenuiter cylindraceum, labello multo longius. 
Plant terrestrial, about 79-85 cm. or more tall. Roots 
fibrous, lanuginose. Stem leafy from below the middle 
up to the raceme, lower portion (for about 11-27 cm.) 
provided only with 8 close tubular sheaths. Leaves lan- 
ceolate or elliptic-lanceolate, up to 21.5 em. long and 5 
em. wide, (much shorter on the lower part of the stem 
and gradually diminishing toward the raceme), acumi- 
nate, clasping. Raceme about 22-29.5 cm. long, very 
loosely many-flowered. Floral bracts lanceolate, spread- 
ing, up to 2.7 em. long, acuminate, 3-nerved. Dorsal 
sepal relatively small, strongly cucullate, apparently sub- 
orbicular in outline, 6 mm. long, broadly obtuse at the 
recurved tip, 8-nerved. Lateral sepals falcate-semiorbic- 
ular, very oblique, about 8.5 mm. long and 5.8-6.5 mm. 
wide in the middle, strongly obtuse, reflexed, with three 
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