On old logs and rocks Cāche Lake, Algonquin Park, Ont., 1900; on earth at Carleton Place, Ont., May, 1900. (Macoun.) Chilli-wack Valley, B.C., 1901. (J.M. Macoun.)

715. B. digastrum, C. M. & Kindb.

On rocks by the Gatineau River, at the Cascades, Que., June 23rd, 1900; on stones in woods, Big Intervale, Margaree, Cape Breton, Island, N.S., July 15th, 1898. (Macoun.)

1141. B. subglaciale, (Kindb.) N. Sp.

On rocks at Fort Cbimo,Ungava, Sept. 9th, 1896. (A. P. Low.)

1142. B. cyrtophyllum, Kindb., Ott. Nat., Vol. XIV. 63. B. acuminatum var. cyrtophyllum, Cat. Can. Pt. VI., 191.

On elm trunks in woods at Carleton Place, Ont., May 12th, 1900. (Macoun.)

718. B. salebrosum, Bruch & Schimp.

On trees and boulders in woods at Baddeck and Margaree, Cape Breton Island, N.S., July, 1898; on earth Cāche Lake, Algonquin Park, Ont., 1900; on stones in woo ls, Foster's Flats and Queenston Heights, Ont., May, 1901. (Macoun.) Lake Linde-man and Dawson, Yukon. (Williams.)

Var. densum, Bruch & Schimp.

North of Little Salmon River, Yukon. I refer specimens here, with rather narrower leaves more closely placed on stems and branches than the preceding. (Williams.)

Var. Waghornei, Ren. & Card., Bot. Gaz., Vol. XIX, p. 238.

A pecular form, distinguishable from the type by the tufts being very dense, the stems erect, turgid, not radiculose, the leaves more crowded, imbricate, and the lid mamillate. Differs from the allied B. mamilligerum, Kindb., in the leaves imbricate, not patulous when dry, and the stems not radiculose. Much smaller than B. turgidum, Hartm. Monoecious.

Battle Harbour, Labrador. 1891. (Waghorne.)

719. B. glareosum, Bruch.

Dr. A. J. Grout believes the specimens collected at Revelstoke and mentioned in Part VI., p. 192, to be B. flexicaule, Ren. & Card.

721 B.laevisetum, Kindb.

Dr. A. J. Grout believes the type specimen of this species to B. salebrosum (Hoffm.) Batsch.

On stones in a ravine at Woodstock, New Brunswick, July, 1899; on the bases of trees, Blueberry Point, Aylmer, Que., April 17th, 1900. (Macoun.)

723. B. albicans, Bruch & Schimp.

On earth in woods, Leamy's Lake, Hull, Que., Nov. 9th, 1896. (Macoun.) On rock at Skagway, Alaska; sterile. (Williams.)

724. B. harpidioides, C. M. & Kindb.

On earth in woods, Beechwood Cemetery, Ottawa, Ont., May 16th, 1900. (Macotin.)