202 Rhodora [SEPTEMBER 
and which have a distinct nigrescent, wrinkled and reticulate exospore 
similar to that found in A. alpestre and in A. asplenioides. 
In its underground parts, and in the form of the frond, this variety 
is in no way peculiar. The frond is rather variable but generally 
agrees closely with ordinary European forms. It is usually markedly 
puberulent on the rachis and the back of the pinnae. 
It ranges from California eastward to southern Idaho, Colorado and 
New Mexico. It also extends southward into Mexico, at least as far 
as the state of Chihuahua. 
All specimens of A. Filiz-femina in the Gray Herbarium within 
this range belong to this variety except that in Idaho and Wyoming 
some specimens occur which are intermediate between this variety 
and typical A. Filixz-femina. These transitional forms have inter- 
mediate types of spores, or spores which are variable in type even on 
the same frond. 
‘The following list contains a portion of the material of this variety 
in the Gray Herbarium: | 
CoLtoraDo: Tabeguache Basin, 8000 ft., August 20, 1913, Edwin 
Payson no. 195; Fish Creek Falls, Routt Co., July 21, 1903, Leslie 
N. Goodding no. 125. 
Ipano: Trinity, Elmore Co., August 23, 1910, J. F. Macbride no. 
635, distributed as Cystopteris languida A. Nels. n. sp. 
Uram: City Creek Canyon, August 9, 1884, F. E. Leonard, ex herb. 
Oberlin College, no. 201. 
New Mexico: Mogollon Mts., 7500 ft., Socorro Co., July 23, 1903, 
O. B. Metcalfe no. 298. 
Nevapa: Little Valley, Washoe Co., 2000-2155 M., August 14, 
1902, C. F. Baker no. 1466; Snow Valley, Ormsby Co., August 8, 1902, 
C. F. Baker no. 1444. 
CALIFORNIA: Dollar Lake Canyon, San Gorgonio Mts., altitude 
9000-9500 ft., July 12, 1908, Abrams and McGregor, no. 768, Mt. 
Eddy, Siskiyou Co., August 26, 1915, A. A. Heller no. 12234; Mt. 
Rose, near Webber Lake, August 15, 1874, J. G. Lemmon; outlet of 
tree e Madera Co., August 16, 1895, J. W. Congdon no. 79 
TYPE). 
Specimen: intermediate between A. Filia-femina and A. Filiz- 
femina var. californicum: 
Wyomine: Piney Creek, Bighorn Mts., August 28, 1900, J. B. Jack. 
