ADDITIONS TO CANADIAN FILICINE. 15 
der and graceful, with thinly membranaceous fronds, which have the pinne cut deeper 
with wider sinuses and narrower lobes, and the veins mostly simple. 
The fronds of all the Canadian plants I have seen are narrower and more graceful look- 
ing, both as a whole and in all their parts, than those of Unalaskan and most Huropean 
and Asiatic forms, but Professor Eaton, to whom a specimen was sent, writes me, “most 
fronds are broader and have broader pinnules, but I have one from Mettenius which is as 
narrow and slender as yours.” The largest of our specimens examined is one foot and one- 
half long, of which three and one-half inches form the stalk, while the middle pinnz are 
only about two inches long. The segments, the basal ones of which, especially on the 
upper side, are often large in proportion to those next them (often twice as long) are but 
little more than a line in width, and the under surface is but very slightly glandular. 
A. oreopteris is common in Europe, from England to Spain and to Russia, occurring 
also in Madeira and Asia Minor, but is not found in Siberia. In America, previous to 1885, 
it was only known to exist on the Island of Unalaska, where Mr. L. M. Turner found it 
in 1878, but in August of that year it was discovered by Professor Macoun on Mount 
Dawson, at the summit of the C. P. Ry. pass through the Selkirk Range, B. Col., a little 
south of lat. 51°. It grew in large patches, at an altitude of 6500 feet or a little less, on a. 
comparatively dry slope about 1500 feet from the summit of the mountain, immediately 
below the bare, sloping rock, and also in wetter soil and at a greater altitude on a neigh- 
boring mountain, the upper slopes of which were covered by a glacier. 
Norre.—As this fern belongs to the subgenus Nephrodium and finds its closest relative, 
among our species, in A. thelypteris, its discovery, owing to its less thinly membranaceous 
character and want of creeping rootstocks, would necessitate a change in, and subdivis- 
ion of, subsection * of that subgenus in “ Canadian Filicinez,” (Trans. Roy. Soc. Can., Vol. 
II, p. 200). The first part of Aspidium, in the article referred to, should therefore, by the 
introduction of this species, read :— 
§ Indusia kidney-shaped or round, with a narrow sinus. 
* Fronds membranaceous, decaying in autumn, bipinnatifid. Veins simple or 
once forked. 
+ Rootstock slender and creeping, with scattered fronds. 
A. Noveboracense, Swz. 
A. thelypteris, Swz. 
+t Rootstock short, with clustered fronds. 
A. oreopteris, Sw. 
3.—A. CRISTATUM, Swz. So far as known, this fern is scarce in New Brunswick, and 
the following stations only are recorded: ‘Bass River, Green Head,—Fowler, Hay ; 
Andover and Upper Gaspereaux,— Wetmore.” (Fowler, in Bull. Nat. Hist. Soc. N. B., No. IV.) 
5.—A. Finix-MAs, Swz. A second New Brunswick station has been discovered, viz., 
Daley’s Wood, Richmond.—Hay. (Fowler, in Bull. Nat. Hist. Soc. N. B., No. IV.) Abun- 
dant on the line of the C. P. Ry. on the lower slopes of Mount Carroll near Bear Creek, 
summit of the Selkirk Range, B. Col.—Macoun. 
11—A. toncurtis, Swz. One of Mr. A. H. MacKay’s Aspey Bay, Cape Breton, speci- 
