202 Rhodora ¢ [SePrempen 3 

















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 variet 
is in no way peculiar. The frond is rather variable but generall 
agrees closely with ordinary European forms. It is usually markedly 
puberulent on the rachis and the back of the pinnae. i 
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 witht 
this range belong to this variety except that in Idaho and Wyoming 
and typical A. Filix-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 Hebets 
CoLoRAbo: Twheghachs Basin, 8000 ft., August 20, 1913, Edwin 
Payson no. 195; rohogg Creek Falls, Routt Co: July 21, 1903, 
N. Goodding no. 
IpaHo: ‘Trinity, Tilmore Co., August 23, 1910, J. F. Macbride no. 
635, distributed as C la A. Nels. n n. s 
~ Uran: 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 1 
1902, C. F. Baker no. 1466; Snow Valley, Ormsby Ca. August 8, 1902, 
C. F. Baker ho. 1444. 
Cauirornta: Dollar Lake Canyon, San Gorgonio Mts., altitude 
9000-9500 ft., July 12, 1908, Abrams and McGregor, no. 768, Mt. 
pecimen: intermediate between A. Filix-femina and A. Filia~ 
femina var. californicum 
Wyomine: Piney Cana Coeak: Bighorn Mts., August 28, 1900, J. B. Jack. 
