(3030.) O. regalis, Linn., Sp. PL, 1521. Swartz, Syn. Fil., 160. Michx., Fl. Bor. - Am., ii., 273. Hook. & Baker, Syn. Fil., 427. Provancher, Fl. Can., 721. Watt, Can. Nat., iv., 364.

Macoun & Burgess, Trans. Roy. Soc. Can., ii., sect. iv., 223.

0. spectabilis, Willd., Sp. Pl., v., 98. Pursh, Fl. Am. Sept., ii., 658.

Hook., Fl. Bor. - Am., ii., 265. O. regalis, var. spectabilis, Milde, Fil. Eur. et Atlant., 178. Lawson, Can.

Nat., i., 290; Fern. Fl. Can., 247.

A tall-growing species of very common occurrence in wet places in most parts of the eastern half of our territory, though rare toward its western limit, which is the Saskatchewan. Observed north of Lake Superior at Round Lake, on the line of the Canadian Pacific Railway, twelve miles east of the Pic River, and at Current River, Thunder Bay, Ont. (Macoun.) Abundant around Lake Mistassini, N. E. Ter.; on Muskeg Island, Lake Winnipeg. (J. M. Macoun.) Through Canada westward to the Saskatchewan. (Eaton.)

(3031.) O. Claytoniana, Linn., Sp. Pl., 1521. Swartz, Syn. Fil., 160. Pursh, Fl. Am. Sept., ii., 657. Hook. & Baker, Syn. Fil., 426. Lawson, Can. Nat., i., 291. Watt, Can. Nat., iv., 364.

Macoun & Burgess, Trans. Roy. Soc. Can., ii., sect. iv., 224.

O. interrupta, Michx., Fl. Bor. - Am., ii., 273. Swartz, Syn. Fil., 160. Pursh, Fl. Am. Sept., ii., 657. Hook., Fl. Bor. - Am., ii., 265. Provancher, Fl. Can. 721.

A handsome fern found growing in tufts in low grounds, and common throughout Canada from Newfoundland and Nova Scotia to Lake Superior, probably finding its western limit in Manitoba. Not uncommon around Lake Nepigon and Thunder Bay, Ont. (Macoun.) Very abundant among boulders all around Lake Mistassini, N. E. Ter. (J. M. Macoun.) Collected by Bourgeau at Sturgeon Lake, some hundred miles north-west of Lake Superior, and, according to Milde, on Lake Winnipeg.

(3032.) O. cinnamomea, Linn., Sp. Pl., 1522. Swartz, Syn. Fil., 160. Michx., Fl. Bor. - Am., ii., 273. Pursh, Fl. Am. Sept., ii., 657. Hook., Fl. Bor. - Am., ii., 265. Hook. & Baker, Syn. Fil., 426. Provancher, Fl. Can., 721. Lawson, Can. Nat., i., 290.

Macoun & Burgess, Trans. Roy. Soc. Can., ii., sect, iv., 225.

A common species in low ground throughout Nova Scotia, New-Brunswick, Prince Edward Island, Quebec and Ontario, as far west as Georgian Bay, which is probably its limit, though Prof. Lawson records it as found at Two Heart River, Lake Superior, by Dr. E. Bell.

The form known as var. frondosa, Gr. is an occasional, accidental condition, in which the lower part of the frond is sterile, the apex fertile. Windsor, N.S. (How.) The Waterworks, Halifax Co., N.S. (Jack.) Molus River, Kent Co., N.B. (Fowler.) In swamps at Belleville, Hastings Co., and at Bismark, Elgin Co., Ont. (Macoun.)