This genus has been revised by Dr. G. N. Best, Rosemount, New Jersey, and the changes ma e below are copied from his work.

637. L. polyccrpa, Ehrh., var. paludosa, (Hedw.) Sch.

On trees, Niagara Falls, Ont., June 15th, 1884; on trees subject to inundation, Kamloops, B.C., June 29th, 1889. The above were referred o L. p lycarpa, in Part VI., p. 168.

All specimens referred to L. subobtusifolia, Kindb., Part VI., p. 169 are also placed here. (Macoun.)

638. L. subobtusifolia, C. M. & Kindb.

On the bases of trees in inundated woods at Golden Lake,Ont., Sept. 27th, 1900. (Macoun.)

640. L. nervosa, Myrin. var. bulbifera, (Brid.) Best.

On rocks at the mouth of Michaud River, Rimouski Co., Que., Aug. 8th, 1881. (Allen.) On rocks, Buffalo Lake, Atha., Aug. 8th, 1888. (J. M. Macoun.) Both referred in Part VI., p. 169 to L. nervosa.

642. L. pulvinata, Wahl.

Roots of trees, Lac Bean, St. Francis River, July 10th, 1882; also on roots of trees, Tobique River, N.B., July, 1884. (G. U. Hay.) Both of the above were referred to L.polycarpa in Part VI., p. 168.

643. L. Wollei, Aust.

On rocks, Jumping Pound Creek, Rocky Mountains, Alta., June 14th, 1897. (Macoun.)

1116. L. obscura, Hedw.; Lesq. & James, Mosses of N. Am. 301.

On trees two miles above the railway bridge above Trenton, Ont., on the west side, Aug. 25th, 1866, referred to L. polycarpa in Part VI., p. 168; on bark of trees at Woodstock, N.B., July, 1899. (Macoun.)

1117. L. intermedia, Best.

On trees near the Great Trenton boulder above Trenton, Ont., Aug. 25th, 1866. (Macoun.)