BENEDICT: REVISION OF THE GENUS VITTARIA 403 
SPECIMENS EXAMINED. VENEZUELA: Tovar, Moritz 143 in 
part (U); Tovar, altit. 2,300 m., Fendler 260 (U, E). PANAMA: 
Cana, 2,000 m., R. S. Williams 889 (U). Costa Rica: La Palma, 
altit. 1,450-1,550 m., Maxon 397 (U, N); La Palma, C. Brade, 
26 Mr 1908 (N); L. C. Wercklé, 1901-05 (U, N). Jamaica: 
numerous collections by Jenman (U), Underwood (U, N); Maxon 
(U, N), Harris (U), and Clute (U, N). Porto Rico: Sierra de 
Luquillo, P. Wilson 81 (U, N); Sintenis 1139 (U, N); Sierra de 
Naguabo, Sintenis 5451 (U, N); El Yunque Mts., Everman 674 
(N); Blauner 307 (U). 
Vittaria remota seems to be the commonest West Indian species 
of this subgenus, at least as far as representation in herbaria is 
concerned. It is most easily distinguishable from the preceding 
species, as has been noted, by the greater breadth of the leaves. 
In scales and rhizome, it is generally similar. 
4. Vittaria latifolia sp. nov. 
Rhizome erect, unbranched, 1-2 cm. long, with the persistent 
petiole bases and roots about 5 mm. thick, 2—3 mm. thick in section, 
radially symmetrical, the leaves and roots arising from all sides, 
the scales ciliate, dull brown, very soft, lanceolate, 7—10-costate at 
the base, the costae uniformly slender ; leaves 3-6, erect or spreading, 
12-22 cm. long, the petioles solid, about 2 mm. thick, flattened and 
laterally angled except at the very base, dull brown or greenish, 
I~4 cm. long, the scales like those of the rhizome but smaller, the 
lamina herbaceous, thin, narrowly lanceolate, broadest (1.5-2.2 
cm.) near, usually somewhat above, the middle, acute with a blunt 
apex, narrowed very gradually below into the petiole, the margins 
thin, sharp, often reflexed, the leaf-trace simple, branching in the 
base of the petiole, the midrib evident along the ventral surface 
of the lamina as a slight but distinctly angled ridge, and marked 
below by a whitish line, the veinlets alternate, rather prominent 
when dry, whitish below, divergent from the midrib at an angle of 
20°, bent forward near the margin and connivent with the anterior 
veinlet, the areolae thus formed simple, 3-4 mm. broad, elongate- 
rhomboid, the oblique sides about 20 mm. long, the marginal and 
costal sides about 10 mm. long; sporangia and paraphyses borne 
along the intersected portions of the veinlets, forming a continuous 
shallowly crenate soral line, 2-3 mm. distant from the margin, 
Superficial or scarcely immersed, the spores diplanate, the para- 
physes pyriform or cyathiform, rounded at first, but soon collapsing 
and becoming angular and ribbed. (PLATE 17.) 
