SLOssON: NEW FERNS FROM TROPICAL AMERICA 287 
pinnae, and usually in the shape of the indusia, which for the most 
part are merely deeply cup-shaped. L. Lehmanii is described as 
having leaves 35 cm. or less long, stipes fuscescent, scales of the 
stipes and rhizome fuscous-ferrugineous, lower pinnae obliquely 
elongate-deltoid, and indusia urceolate. 
Polypodium insidiosum sp. nov. 
Rhizome erect or oblique, about 1.5 cm. or less long, about 3 
mm, or more in diameter, the crown thickly clothed with yellowish 
brown lanceolate or oblong-lanceolate scales 1 to 3 mm, long, 
having minute, rarely jointed, processes on their margins; stipe 
dull brownish or blackish, slender, wiry, terete, often arcuate, at 
obtuse, at base acutely cuneate and very shortly decurrent, entire, 
repand, or somewhat sinuate, glandular-pubescent, glabrescent; 
the margin and lower surface, especially about the sporangia, 
sparingly furnished with short brown spreading hairs, a few some- 
times on the upper surface also; midvein flexuose, mostly con- 
bl 
sori apical or dorsal on the innermost branches or on short spurs 
of these, irregularly I- to 3-serial, orbicular or oval, 1 to 2 mm, 
broad, Superficial; sporangia glabrous; spores finely papillose. 
Type in the Underwood Fern Herbarium at the New York Bo- 
tanical Garden, collected on mossy tree trunks near Camp La 
Gloria, a mining camp south of Sierra Moa, Province of Oriente, 
Cuba, at an altitude of about 762 meters, December 24-30, 1910, 
J. A. Shafer 8043, 
This plant strongly suggests a small mock Polypodium tri- 
oon It is much smaller than that species, fruiting when 
h na 3:5 cm. high, and appears to have a somewhat different 
abit. 
: When dried, the fronds are rigid and very brittle, and the 
ae, are more or less arcuate; the fronds thus point in various 
directions, but are not bent abruptly at the base of the lamina, as 
ia to be the case in P. trifurcatum. The laminae when lobed 
cithes « deeply so than is usual in the latter plant and are often 
play Or merely subentire. 
RK Botanica. GARDEN. 
