(2979.) C. triangularis, Kaulf., Enum. Fil., 73. Hook., Fl., Bor. - Ara. ii., 259. Hook. & Baker, Syn. Fil., 384.
Found only in British Columbia, and rare even there. Crevices of rocks on the grassy slopes of Cedar Hill and Gordon Head, a few miles from Victoria, and at Goldstream and Departure Bay, near Nanaimo. (Macoun.) Mount Finlayson, Vancouver Island. (Hill.) Common about Victoria on bare hills under the shady sides of rocks. (Anderson.)
(3029.) S. pusilla, Pursh, Fl. Am.'sept., ii., 657. Hook., Fl. Bor. - Am., ii., 265. Hook. & Baker, Syn. Fil., 428. Lawson, Can. Nat., i., 291.
Macoun & Burgess, Trans. Roy. Soc. Can.,ii., sect. iv., 222.
This peculiar, sedge-like, little species is one of the rarest of ferns. Only one station is known in Canada, but it is recorded by De la Pylaie as occurring in a peat bog near St. Pierre, Newfoundland. Found among the rhizomes of Osmunda regalis on the shore of Grand Lake, twenty-three miles from Halifax, N.S., in August, 1879, by Miss Elizabeth G. Knight (now Mrs. Britton), but not since detected.
(3052.) M. vestita, Hook. & Grev.
Abundant on desiccated ground at the north end of the Cypress Hills, Alberta; also on sandy soil, covered occasionally with water, on the Indian Reservation at Kamloops, B.C. (Macoun.)
(3053.) M. mucronata, A. Braun. MSS. Am. Journ. Sci. 2nd. Ser. Vol. III., 55.
In pools on the open prairie east of the Hand Hills, Alberta, Aug. 8th, 1879. (Macoun.)
(3054.) A. Caroliniana, Willd.; Hook. Fl. II., 268.
Floating on the still waters of Lake Ontario. (Pursh.) In water near Burlington Beach, Hamilton, Ont. (Logie, Buchan.) Very abundant in still water at Salmon Arm, Shuswap Lake; and in pools along the C. P. Ry. between the bridge at Sicamous and the first crossing of Eagle River, B.C. (Macoun.)
Additions and Corrections to Parts I-IV.