1123. A Subrigidulus, Kindb., Bryol. N. Am. & Eur., 11

Differs from A. tectorum in the leaves being more distinctly recurved to the short acumen; middle cells round-oval; costa generally reaching to the acumen. Stem irregularly divided, not creeping. Capsule and lid as in A. tectorum; peristome not seen.

On rock's on the coast of Labrador. (Waghorne.)

108. Platygyrium, Bruch & Schimp. 651. P. Repens, Bruch & Schimp

On old logs, Golden Lake, Ont., Sept. 27th, 1900. (Macoun.)

110. Homalothecium, Bruch & Schimp

662. H. sericeoides, C. M. & Kindb.

On rocks, Moose Mountain, Elbow River, Alta., July 1st, 1897. (Macoun.)

663. H. sericeum, Linn.

On earth by the sea near the Indian Village, Comox, Vancouver Island, June 20th, 1893. (Macoun.)

112. Climacium, Web. & Mohr

672. C. dendroides, Web. & Mohr.

Very abundant on old logs in a swamp at Golden Lake, Renfrew Co., Ont. In very fine fruit Sept. 27th, 1900. (Macoun.) Canon City, Dyea Creek, Alaska; Marsh Lake and Klondike River bottom near its mouth. Not fruiting. (Williams.)

Var. Oregonense, Ren. & Card. Shore of Lake Marsh, Yukon, on gravel; sterile. (Williams.)

673. C. Americanum, Brid.

Roundhouse woods, near Niagara Falls, Ont., May 20th, 1901. (Macoun.)

674. C. Ruthenicum, (Weinm.) Lindb.

Port Etches, Alaska, Lat. 60° 30', June 18th, 1892. (J. M. Macoun.)

113. Orthothecium, Bruch & Schimp

678. O. chryseum, Bruch & Schimp.

On earth along Bragg's Creek, Elbow River, Rocky Mountains, July 9th, 1897. (Macoun.) Skagway and Lake Bennett. (Williams.)

125. Thamnium, Schimp

794. T. neckeroides, Bruch & Schimp.

Porotrichum neckeroides, (Schwaegr.) Willisms.

Canon City, Dyea Creek, Alaska. (Williams.)

Subgenus IV. - Rhytidium, Sulliv

866. H. rugosum, Linn.

Fort Chimo, Ungava Bay, Labrador, Aug., 1896. (A. P. Low) On Pike's Portage, Great Slave Lake, May, 1900. (J. W. Tyrrell.) Lake Marsh, and Mile's Canon, sterile specimens abundant, Dawson; fruit not rare. (Williams)

Subgenus V. - Ctenium, Sulliv

867. H. crista-castrensis, Linn.

Lake Lindeman and Klondike River bottom. Not found in fruit. (Williams.)

Subgenus VI. - Ctenidium, Hedw

1180. H. molluscoides, Kindb., Revue Bryol. 1895.

Leaves nearly entire, distinctly decurrent; alar cells somewhat large, well-defined. Capsule small, cylindric, arcuate. Otherwise like H. mollusacm, Hedw.

On logs, Bay Bull Arm, Newfoundland. (Waghorne.) On old logs, Baddeck, Cape Breton Island,N.S., July 9th, 1898. (Macoun.)

1181. H. Alaskae, Kindb., Bryol. N. Am. & Eur. 142.

Leaves entire, sub-decurrent, gradually acuminate; alar cells large, hyaline well-defined. Capsule subovate or arcuate; pedicel short. Tufts green or pale yellow. Stem creeping subpinnate or plumiform.

On old logs, Newfoundland. (Waghorne.) On trees, Canaan Forks, Queen's Co., N.B., Oct., 1894. (J. Moser.)