On the mountains above Chilliwack Lake, B.C., 1901. (J.M. Macoun.)
586. P. gracile, Menzies.
Wet rocks, Tobique River, N.B., July, 1884. (G. U. Ha:) Referred in Part VI., p. 151, to P. alpinum. Swampy places at Edmonton, Ont., July, 1893. (Jas. White.) Fort Chimo, Labrador, Aug. 1896. (A. P. Low.) Table Top Mountain, Gaspé Que., Aug. 1882, referred in Part VI., p. 151 to P. alpinum; very abundant in woods throughout the Algonquin Park, Ont., July, 1900. (Macoun.) Yukon River, just below White Horse Rapids, Yukon. (Williams.)
588. P. Ohioense, Ren. & Card.
On earth at Baddeck, Half-way Brook, Margaree and Louis-burg, Cape Breton Island, N.S., 1898; on earth in beech woods, Leamington, Essex Co., Ont., May, 1901. (Macoun) Moist woods, Edmonton. Ont., 1893. (Jas. White.)
590. P. piliferum, Schreb.
Lake Lindeman, Yukon. (Williams.) Chilliwack Valley, B C, 1901. (J. M. M coun)
1101. P. microdontium, Kindb., in Biblioth. Botan. 42 (1897). Pog naium alpinum, var. microdontium, Kindb.; Cat. Can.
Musci, p. 152.
On St George and Atka islands, Behring Sea, 1892; also at the mouth of Skeena River, B.C., May, 1892. (J. M. Macoun)
1102. P. Vanhoeffeni, Kindb. in Biblioth. Botan. 42 (1897). Rather rare in Greenland. (Vanhoeffen )
591. P. hyperboreum, R. Brown.
On earth near Fort Chimo, Ungava Bay, Labrador, Aug., 1896. (A. P. Low) Lake Lindeman, Yukon. This plant has a white hair-point like piliferum but grows up to 8 cm. or more, with abundant branches. (Williams)
592. p. boreale, Kindb.
On rocks, Mosquito Bay, Labrador, Lat. 61° 25', Aug. 13th, 1898. (A. P. Low)
1103. P. Behringianum, Kindb., Revue Bryol. 1894.
On boggy ground, St. Paul Island, Behring Sea, July, 1892. (/. M. Macoun.) On the summit of Sulphur Mountain, Banff, Rocky Mountains, July, 1891. (Macoun.) The last specimen is very doubtful.
593. p. juniperinum, Willd.
Quite common in all parts of the country about stumps in pastures, and meadows and woods. (Macoun.) Lake Lindeman, Yukon. (Williams.)
594. p. strictum, Banks.
Sheep Camp and Dyea Creek, Alaska, and Lake Lindeman, Yukon. (Williams.)
595. p. commune, Linn.
The var. minus is common in a damp thicket at Leamington, Essex Co., Ont. (Macoun.) Lake Lindeman and Dawson, Yukon. At the latter place in fine fruit, July 30th, 1899. (Williams.)
1104. p. inconstans, Hagen.
Stems slender, up to 8 cm. high, rather uniformly leaved above with a felt of dark red radicles below. Leaves somewhat distant, irregularly spreading, up to 6 mm. long, lanceolate with costa scarcely or short-excurrent and margins minutely serrulate. Lamellae up to about 24, the median from 5 to 9 cells high, terminating in 1 or sometimes 2 cells, transversely oblong in section about twice wider than high and not or scarcely depressed. Blade of leaf-bearing lamellae on either side of costa of only two layers of cells thick with cell walls on back of leaf not thickened. Leaf-cells in blade between base of lamellae and margin of leaf mostly from .012 by .016 mm. to .016 by .020 mm.
Collected at Lake Lindeman in swampy places, May 26th, 1898. (Williams.)