MAXON—STUDIES OF TROPICAL AMERICAN FERNS, 597 
NEW SPECIES OF POLYPODIUM. 
In continuation of a study of the tropical American species of 
Polypodium the five species here described are among those recog- 
nized as new. The first four belong to the subgenus Eupolypodium, 
one being allied to P. pendulum Swartz, one to P. subsessile Baker, 
and two to P. capillare Desv., as that species is currently understood ; 
while the remaining species is of the subgenus Phymatodes and allied 
to P. lycopodiotdes L. 
Polypodium flexuosum Maxon, sp. nov. PLATE 42, 
Plants epiphytic, the several fronds pendent, fasciculate, 10 to 15 em. long. 
Rhizome decumbent, less than 1 cm, long, 2 to 8 mm. in diameter, densely 
paleaceous, the scales brownish castaneous in mass, 1 to 1.7 mm, long, linear- 
deltoid or nearly linear from a rounded base, about 06.8 mm. broad, semitrans- 
lucent (the partition cell walls darker visually than the yellowish or yellowish 
brown outer walls), long-ciliate throughout, the cilia divergent, nearly straight, 
acicular, unicellular, yellow, 0.2 to 0.4 mm. long; stipe slender, 1 to 2 cm. long, 
0.3 to 0.5 mm. in diameter, light brown, dull, scantily long-pilose; lamina 9 to 
14 cm, long, 1 to 1.7 cm. broad, linear, arcuate, attenuate in both directions, 
alternately pinnatifid nearly to the slender blackish flexuous elevated rachis, 
the sinuses very wide, rounded ; segments 15 to 25 on each side, exactly alter- 
nate, slightly oblique, 5 to 9 mm. long, 2.5 to 38 (83.5) mm. broad at the middle, 
oblong or mostly triangular-oblong from a broadly dilatate base (this 4 to 10 
mm. broad), obtuse, both leaf surfaces bearing short multicellular simple or 
branched hairs, the upper surface hirsute also with long, stiff, unicellular 
hairs, both kinds extending to the margins, the segments ciliate; lower 8 or 4 
segments on each side gradually shorter, the basal ones slight; midveins 
slender, subflexuous, parallel to the proximal margin; veins 3 or 4 pairs, 
arising at an angle of 50° to 60°, simple, ending in minute hydathodes far from 
the margin; sori 2 to 4 pairs, small, distant, superficial, supramedial or sub- 
terminal, the vein not geniculate; sporangia rigidly long-setose, the sete 
yellowish brown, 0.13 to 0.2 mm. long; annulus 14 or 15-celled. Leaf tissue 
pale dull green, quickly discolored, membrano-herbaceous, the veins not readily 
visible by transmitted light. 
Type in the U. 8S. National Herbarium, no. 657904, collected at Camp La 
Gloria, south of Sierra Moa, Oriente, Cuba, December 24 to 30, 1910, by J. A. 
Shafer (no. 8037). 
In habit and leaf outline Polypodium fleruosum closely resembles P. pendu- 
lum Swartz, of Jamaica and the Lesser Antilles, and this species alone. Poly- 
podium pendulum is, moreover, its closest relative, but differs very definitely 
in its much larger, distinctly clathrate, shorter-ciliate rhizome scales, its non- 
hirsute, nonciliate segments, its more numerous veins, its somewhat impressed 
medial sori, and its bright green leaf tissue. 
EXPLANATION OF PLATE 42.—A part of the type specimens of Polypodium fleruosum. 
Natural size, 
Polypodium chiricanum Maxon, sp. nov. PLATE 43. 
Plants epiphytic, the fronds (4 to 8) depending obliquely, subfasciculate, 
15 to 25 cm. long. Rhizome decumbent, curved, about 8 cm. long, 4 mm. in 
diameter, obscurely paleaceous at the apex, the scales brownish, 1.9 to 3 mm. 
long, 0.45 to 0.75 mm. broad (excluding cilia), lanceolate to ovate from a 
cordate base, acute to attenuate, 12 to 22 cells broad (the partition cell 
10069°—16 5 
