PoLysticHuM ANDERSONI AND RELATED SpEcIES 37 
limit,” Sept. 1897, A. D. E. Elmer 707; same locality, 
“tocky slopes, alt. 5000 ft.,” Aug. 20, 1897, M. W. 
Gorman 709. Mount Rainier, alt. 4000 ft., “old mor- 
aines, in shade of alders,” Aug. 28, 1902, J. B. Flett 2020. 
The affinity of this species is clearly with P. Andersoni, 
from which, however, it is distinguishable by the char- 
acters stated in the key and under that species, below. 
3. Potysticnum ANDERSONT Hopkins, Amer. Fern 
Journ. 3: 116. pl. 9. Vis: 
Type.—Collected at Elk River, Strathcona Park, 
Vancouver Island, British Columbia, Aug. 2, 1912; in 
Herbarium of the Geological Survey of Canada, no. 83121. 
In addition to the actual type the writer has exam- 
ined several fronds taken from the original plant, which 
Was transplanted to a garden at Sidney, B. C. rough 
the courtesy of Mr. James M. Macoun three of these 
have been placed in the National Herbarium. A single 
additional collection has been seen: 
RITISH CotumB1a: North Fork of the Illecillewaet, 
alt. 3500 ft., Aug. 26, 1904, C. H. Shaw 566. 
Supplementing the characters given in the key, at 
may be mentioned that P. Andersoni is a more rigid 
Plant than P. Jenningsi and has the pinnae decidedly 
More slender, even the basal pinnae being very nar- 
rowly triangular and attenuate, as opposed to the 
short-triangular or oblong-triangular, acutish basal 
pinnae of P. Jenningsi. The teeth of the segments 
are less curved also - and the bristle-like tips arise more 
abruptly, appear longer, stiffer, and more slender, and 
Mostly diverge more widely. The upper surface of 
the Segments is not “smooth,” as stated in the remarks 
following the original description of P. Jenningst, but 
IS scantily fibrillose-scaly, the few minute scales im 
oth species being readily abraded, however. 
Wasuineton, Do. 
