CANADIAN FILICIN1LE. 219 



On a moist, mossy bank near the falls on the Biviere-du-Loup, within reach of the spray 

 from the falls, and on mossy rocks in a ravine, Temiscouata, Que. — D. A. Watt. Norway 

 House, Lake "Winnipeg. — Richardson. Nottingham Island, Hudson Strait. — R. Bell. On 

 rocks along the Arctic coast, from the Mackenzie Eiver to Baffin Bay. — Hook., Arc. PI. 



* * Fronds very hairy and chaffy beneath. 



3.— W. Ilvensis, R. Br., (Rusty Woodsia, Woolly-Fern), Hook., Fl. Bor.-Am., II, 259. 

 Pursh, II, 660. Gray, Man., 669. Provancher, Fl. Can., 720. Lawson, Can. Nat., 1, 288. 

 Hook, and Baker, Syn. Fil., 46. Macoun's Cat., No. 2325. Fowler's N. B. Cat., No. 765. 

 Ball, Trans. N. S. Inst. Nat. Sci., IV, 155. Watt, Can. Nat., IV, 363. Eaton, Ferns of N. 

 A., II, 111. Underwood, Our Nat. Ferns, etc., 110. 



W. hyperborea, var. rufidula, Koch. 



Acrostichum Ilvense, L. 



Polypodium Rvense, Swartz, Syn. Fil., 39. 



Nephrodium rufidulum, Mx., Fl. Bor.-Am., II, 269. 



Aspidium rufidulum, Swartz, Syn. Fil., 58. 



A small, dull green, rather coarse looking, tufted, non-evergreen, but hardy fern, grow- 

 ing usually from 3 to 13 inches high, on exposed metamorphic rocks and in their 

 crevices. Bootstock short, ascending, tufted, covered with old stalk-bases ; stalks com- 

 monly about half the length of the fronds, stout for the size of the plant, greenish when 

 fresh but straw-coloured or reddish-brown when dry, very hairy and chaffy ; fronds lance- 

 olate, usually about 2 to 8 inches long by J to 2 wide, as a rule thickly covered on the 

 under side with chaff and hair, which is whitish when young but afterwards rusty, 

 green and smoother on the upper surface, pinnate ; pinnse sessile, 6 to 9 lines long, oblong- 

 ovate, rather acute, and pinnatifid into about 9 to 21 oblong, obtuse, usually crenate lobes, 

 which have slightly refiexed margins ; sori numerous and at length confluent ; indusia 

 long-ciliate. 



This fern is occasionally almost smooth, and, as before stated, the less chaffy forms are 

 hard to distinguish from the more chaffy ones of W. hyperborea, and the var. gracilis of 

 Prof. Lawson in Can. Nat., I, p. 288, which, as stated by him, seems to agree better with 

 W. hyperborea in technical characters, is one of these intermediate forms, and probably 

 referable to that species, which is found in the locality where Lawson's form was collected. 

 Some specimens from the north of Lake Superior are more delicate in appearance than 

 usual, from having all their parts narrower and much more distant, while the fronds them- 

 5elves are narrower and more acuminate. 



Woodsia Ilvensis occurs in places within our limits from Nova Scotia to the Eocky 

 Mountains, and north beyond the Arctic circle. Not common in Nova Scotia. — A. H. 

 McKay. Salt Mountain, Whycocomagh, Cape Breton, N. S. — Lindsay. Abundant on 

 Gold Eiver, near Chester, Lunenburg Co., N. S. — Rev. E. H. Ball. High rocks, east 

 side of Lake Thomas, Halifax Co., N. S. ; Hay's Falls, near Woodstock, N. B. — P. Jack- 

 Near Truro, N. S. — Campbell. The "Look Out," Cape Blomidon, N. S. — Macoun and 

 Burgess. Sugar Loaf, Eestigouche, and month of Upsalquitch, N. B. — Foioler. Keswick, 

 Nashwaaksis, St. Stephen, and near Green Head, St. John, N. B. — /. Vroom. Extremely 

 abundant in many parts of Quebec and Ontario.— Provancher, D 1 Urban, Laicson, Macoun, 

 Fletcher, Logie, Burgess, etc. Very abundant and luxuriant west and north-west of Lake 



