MAXON—STUDIES OF TROPICAL AMERICAN FERNS. 1438 
nearer to the midvein than to the margin, the next to the lowermost of the upper row 
occasionally subdiplazioid; indusia linear, firm, whitish, persistent, irregularly erose; 
spores light brown, somewhat translucent, conspicuously alate, the ridges sharp and 
anastomosing coarsely. 
Type in the U. 8. National Herbarium, no. 427745, collected from ledges above 
Green River, on the trail from Cinchona to Blue Mountain Peak, Jamaica, at an 
estimated elevation of 1,050 meters, April 22, 1903, by William R. Maxon (no. 1487). 
Asplenium nesioticum is apparently confined to J amaica. It was well characterized 
by Jenman ! under the name “ Asplenium ebeneum Ait.” and properly distinguished 
from its two Jamaica allies, A. underwoodii and A. resiliens, the “‘trichomanes” and 
“narvulum” respectively of Jenman’s treatment. In its mature development it has 
usually the upright habit, rigid fronds, oblong middle pinne, and reflexed lower 
pinne of A. resiliens; but it differs from this species conspicuously in its orbicular or 
flabelliform, noncordate lower pinne, its very much longer sori, these placed near 
the midvein (whereas in A. resiliens they are short and near the margin), and by its 
chaff, this having the apices attenuate but by no means capillary as in A, resiliens. 
Jenman’s grounds for associating this plant with Aiton’s A. ebeneum (A. platyneuron) 
and citing Eaton’s plate 4, must remain a matter for speculation, for the two species 
have no very close relationship. From A. underwoodit it differs in nearly all general 
as well as minute characters. The species is known only from Jamaica. 
Besides the type the following specimens have been examined: 
Jamaica: Crevices of wet cliffs, near Green River, on the trail from Cinchona to 
Blue Mountain Peak, Mazon 1493 (N); Underwood 2557 (Y), 2561 (Y). 
Upper slopes of John Crow Peak, in chinks of cliffs in wet woods, Mazon 1344 
(N); Underwood 708 (Y). Old England (below Cinchona), J. Hart (N); 
Underwood 1662 (Y). Near Cinchona, alt. 1,500 meters, Underwood 2587 (Y). 
Pleasant Hill, Harris 7905 (Y,N). Pleasant Hill Lower Works, August, 1898, 
Harris 7316 ? (N). 
9. Asplenium resiliens Kunze, Linnaea 18: 331. 1844. 
Asplenium parvulum Mart. & Gal. Mém. Acad. Sci. Brux. 155: 60. 1842, not 
Hook. 1840. 
Type Locatity: Near Capulalpan and Hacienda del Carmen, eastern Oaxaca, 
Mexico, altitude 1,800 to 2,100 meters (Galeotti 6462). 
Distrisution: Virginia to Kansas, south to Florida, the Gulf States, Arizona, and 
in the mountains sparingly through Mexico to Guatemala; also in J amaica. 
IuLustrations: Mém. Acad. Sci. Brux. 15°: pl. 15. f. 8; D. C. Eaton, Ferns, N. 
Amer. 1: pl. 36. f. 5, 6; Waters, Ferns 148 (text figure). 
Specimens of the type collection of this species have not been seen by the writer. 
Agreeing very well, however, with the original description by Martens and Galeotti, 
and with the sketch figure published by them, are certain Mexican specimens which 
may safely be taken as representing this species; for example, Dr. Edward Palmer’s 
no. 446, collected in 1902, from narrow chinks of shaded cliffs at Alvarez, San Luis 
Potosf, altitude about 2,400 meters. These specimens are exceedingly fertile and the 
fronds are narrow and stiffly erect, with auriculate and mainly retrorse segments. A 
large proportion of the United States specimens are less rigid and a little more leafy; 
but others from the Southwestern States and the Mexican boundary region are prac- 
tically identical with the Mexican. 
1 Bull. Bot. Dept. Jamaica 46: 8. 1893. 
2 By an unfortunate interchange of labels plants of this collection in the Jenman 
Herbarium at the N. Y. Botanical Garden bear Mr. Harris’s number 7325 and the 
locality as New Haven Gap, Jamaica. Mr. Harris writes that these are data actually 
pertaining to Histiopteris incisa, as collected by him. 
