4 AMERICAN FERN JOURNAL 
glands are not always easily seen in mature specimens 
of D. arguta, and plants of D. filix-mas growing in ex- 
posed situations often show firm indusia very similar 
to those of its near ally. Distinctive differences are, 
however, found in the foliage characters, which may be 
stated briefly as follows: 
Pinnae sessile, oblong-lanceolate, the lower basal pinnule usually 
with a semicordate base, this overlying the primary rachis; 
veinlets spreading, all ending in salient spinelike teeth. 
. arguta. 
Pinnae mostly short-stalked, deltoid-lanceolate, the basal pinnules 
symmetrical, distinctly apart from the primary rachis; vein- 
lets oblique, fewer, ending in oblique, usually curved teeth, 
wnewe mereny Meube 6 oe es D. filix-mas. 
Dryopteris arguta is a very common species of rocky 
ravines and partially shaded slopes in southern Cali- 
fornia, whence it extends northward (chiefly in the 
coastal and interior valley regions) to western Oregon 
and the bluffs of the Columbia River above Cathlamet, 
Washington, in the Upper Sonoran and Transition 
zones. Its reputed occurrence in British Columbia is 
extremely doubtful. Dryopteris filiz-mas extends from 
Newfoundland to British Columbia, south to Vermont, 
South Dakota, extreme western Oklahoma, New Mexico, 
Arizona, Nevada, and Oregon, being restricted ap- 
parently to the Canadian and Hudsonian zones. It 
occurs also at a single locality in California,—Holcomb 
Valley, San Bernardino Mountains, altitude 2,400 
meters, August 3, 1882, S. B. & W. F. Parish 1613,— 
as reported long ago by Mr. 8S. B. Parish. A specimen 
of this collection is in the Dudley Herbarium of Stan- 
ford University. 
Wasnneton, D.C. 
