Burgess, Trans. Roy. Soc. Can., iv., sect. iv., 15.
Polystichum Lonchitis, Roth, Tent. Fl. Germ., iii., 71. Lawson, Can. Nat, i., 285; Fern Fl. Can. 239. Watt, Can. Nat., iv., 363.
Grows in tufts in shaded, rocky places, usually on the debris of calcareous rocks, and, except in the Rocky Mountains, is a rare and local species, as far as known. In considerable abundance near Aspey Bay, Cape Breton, N.S. (McKay.) Found sparingly at Foster's Flats, below the Whirlpool, Niagara Falls, Ont.; common on rocky ground, especially under cliffs, throughout the Bruce Peninsula, and around Owen Sound, Ont.; on the mountain slopes of Bow River Pass, and in Peace River Pass, Lat. 56°, Rocky Mountains, N. W. Ter.; on the upper slopes of Cathedral Mountain at Kicking Horse Lake, on the snowslides near the summit of the Selkirk Mountains, in the Cascade Mountains above Yale, and on the Gold Range north of Griffin Lake, B.C. (Macoun.) Kootanie Pass, Rocky Mountains, Lat. 49°, at 6,500 feet elevation. (Dawson.) Rocky Mountains, Lat. 52° - 56°. (Drum-mond.) On rocks along the Arctic coast from the Mackenzie River to Baffin Bay. (Hook. Arct. Pl.)
(3014.) A. acrostichoides, Swartz, Syn. Fil., 44. Pursh, Fl. Am. Sept., ii., 661. Hook., Fl. Bor. - Am., ii., 261. Hook. & Baker, Syn. Fil., 250. Provancher, Fl. Can., 718. Macoun & Burgess, Trans. Roy. Soc. Can., ii., sect, iv., 210.
Burgess, Trans. Roy. Soc. Can., iv., sect. iv., 16.
Nephrodium acrostichoides, Michx., Fl. Bor. - Am-, ii., 267.
Polystichum acrostichoides, Schott, Gen. Fil. Lawson, Can. Nat., i., 285;
Fern Fl. Can., 239. Watt, Can. Nat., iv., 363. Polystichum munitum, Presl, Tent. Pterid., 83. Lawson, Fern Fl. Can., 239.
An evergreen, tufted species, found in woods and on wooded hillsides, especially in rocky soil. It occurs from Nova Scotia to the Bruce Peninsula of Ontario, which seems to be about its western limit in Canada. Quite common in Nova Scotia, (Ball.) Common near St. John; rare near Molus River, Kent Co., N.B. (Fowler.) Woodstock, N.B. (Jack.) Upper Tobique and Kennebeccasis, N.B. (Hay.) Common at Salmon River, N.B. ( Wetmore.) Not rare in Prince Edward Island. (Bain.) Common in Quebec. (Provancher, D' Urban, Maclagan, Bothwell, Sheppard, St. Cyr, etc.) Very abundant in Eastern, Central, and South-western Ontario. (Macoun, Lawson, Logie, Fletcher, Burgess, etc.) The form known as var. incisum has been reported from Montreal, Que. (McCord.) Owen Sound, Ont. (Macoun.) London and Hamilton, Ont. (Burgess.)
(3015.) A. munitum, Katif., Enum. Fil., 236. Hook.,Fl. Bor. - Am., ii., 261.
Macoun & Burgess, Trans. Roy. Soc. Can., ii., sect. iv., 211.
An evergreen species, growing in woods and among rocks, confined with us to British Columbia. North-West America. (Menzies.) Nootka, Vancouver Island. (Mertens.) Very abundant around Victoria, and common in rocky woods up the Fraser River to far above Yale, also on mountain slopes at Griffin Lake, Eagle River. (Macoun.) Damp thickets, New Westminster. (Fletcher.) The forms which have been described as var. inciso-serratum and var. imbricans have been found about Victoria, the former by Prof. Macoun. the latter by Mr. Fletcher.
(3016.) A. aculeatum, Swartz, Schrad. Journ.,ii., 37; Syn. Fil., 53. Hook. & Baker, Syn. Fil., 252. Macoun & Burgess, Trans. Roy. Soc. Can., ii., sect. iv., 211.
Burgess, Trans. Roy. Soc. Can., iv., sect. iv., 16.
A. lobatum, Smith, Fl. Brit, 1123. Swartz, Syn. Fil., 53. A. aculeatum, var. lobatum, Kunze, Bot. Zeit. (1848), 356. Eaton, Ferns of N. Am., ii., 124.
Our only known station for typical A. aculeatum is Port Simpson, Northern B. C, where it was collected, in moist rocky places, by Mr. Anderson, in 1885. Further research in that district will probably prove it to be less rare.
Var. Braunii, Doell (Koch), Rhein. Fl, 27. Macoun & Burgess, Trans. Roy. Soc. Can., ii., sect., iv., 212.
Agpidium Braunii, Spenner, Fl. Frib., i., 9.
A. aculeatum, Pursh, Fl. Am. Sept., ii., 662. Hook., Fl. Bor. - Am., ii., 261.
Provancher, Fl. Can., 719. Polystichum angulare, Presl, var. Braunii, Lawson, Can. Nat, i., 285. Polystichum aculeatum, Moore, var. Braunii, Watt, Can. Nat., iv., 363. Polystichum Braunii, Lawson, Fern Fl. Can., 239.
Found in the crevices of moist, shaded rocks, and in rocky woods, its range being restricted to the Provinces of Nova Scotia, New Brunswick, Quebec, and British Columbia. Rare and local in Nova Scotia; occurring at Marble Mountain, Bras d'or Lake; Sherman's Mountain, Port Mulgrave, Strait of Canso; Ehler's Waterfall, near Cuysborough; and hills above Mabou, Cape Breton. (Ball.) Lake Ainslie, Cape Breton. (McKay.) Near Baddeck, and at River Inhabitans, Cape Breton. (Jack.) Pirate Harbour, Strait of Canso, N.S. (Macoun & Burgess.) Cape Blomidon, N.S. (Lawson.) Sugar Loaf, Restigouche; and Odell's Grove, Fredericton, N.B. (Fowler.) St. Francis River, Andover, N.B. (Hay.) Plentiful in rocky woods along the Gaspé Coast, Que., generally near the shore and often within the spray of the waves. (Macoun.) Quebec, Que. (Sheppard.) Temiscouata, Que. (Thomas.) Isle of Orleans, Que. (St. Cyr.) Abundant on gneiss rocks and damp logs, valley of the River Rouge, Argenteuil Co., Que. (D'Urban.) Portage and sources of the Columbia River, west side of the Rocky Mountains, Lat. 52°. (Drummond.) Nootka, Vancouver Island, B.C. (Hoenke.)
Var. scopulinum, D. C. Eaton, Ferns of N.A., ii., 125. Macoun & Burgess, Trans. Boy. Soc. Can., ii., sect. iv., 212.
A form with narrow fronds, much resembling those of A. mohrioides, found growing in the crevices of rocks. In Canada only known to exist on Mount Albert, Shickshock Mountains, Gaspé, Que., where it was found, at an altitude of about 4000 feet, by Professor Allen, in July 1881, and by Professor Macoun, in August 1882. Having been found in Washington Territory, U.S., it is to be looked for in Southern British Columbia.