ia AMERICAN FERN JOURNAL 
Forest, alt. 1,600-1,800 meters, Eggleston 10983. Hua- 
chuca Mountains, August to October, 1882, Lemmon; 
Holzner (Internat. Bound. Comm. 1718). Sonoita Val- 
ley, Rothrock 657. Dutch Charley’s Ranch, near Monu- 
men , Pima County, Mearns (Internat. Bound. 
Comm. 1851). Tombstone mines, Cochise County, 
Apr. 23, 1880, Lemmon. 
Ura: Mesa, between Bear’s Ears, Elk Mountains, 
and the Natural Bridges of White Canyon, alt. 2,000- 
2,200 meters, Rydberg & Garreit 9386. 
The specimens just cited agree in essential char- 
acters, but vary considerably in size, however, from 
Holzner’s large Huachuca specimen to plants which, 
though by no means depauperate, are but half that size. 
In all these the broadly deltoid-ovate form of the blades 
is a constant and conspicuous character, the basal 
pinnae averaging at least half as long as the blade itself. 
Differing from them in minor particulars is the following 
form, which seems to merit recognition: 
Notholaena limitanea mexicana Maxon, subsp. 
nov.—Blades narrower than in the typical form, oblong 
to oblong-lanceolate, 3-4-pinnate; pinnae more oblique, 
narrower, the basal ones only one-fourth to one-third 
as long as the blade; segments averaging larger. 
Type in the U. 8. National Herbarium, No. 42059, 
collected from limestone ledges of the Santa Eulalia 
Mountains, Chihuahua, Mexico, Sept. 15, 1885, by 
C. G. Pringle (No. 451). Agreeing with this are two 
_ Sheets collected by Wilkinson at the same time and 
place, and a single Arizona specimen (Wilgus Ranch, 
Chiricahua Mountains, alt. 1,800 meters, Aug. 31, 1907, 
Blumer 2390). The appearance of these specimens is 
rather distinctive, but the characters are only com- 
parative and the transition to typical N. limi.anea, 
though not complete, is definitely indicated. Plants 
collected in the Burro Mountains of New Mexico. by 
Mey a a id 
