992. D. giganteum, R. S. Williams.
The author compares this species with large forms of D. flexicaule which approach it very closely. Sterile specimens, only, collected at Dawson, Yukon, 1899. (Williams.) Specimens of this species were collected by the "torrent" at Hector, Rocky Mountains, July 29th, 1885, and again on August 12th, 1890. These were referred to flexicaule in Part VI., Cat. Can. Musci., p. 46. (Macoun.)
166. D. tortile (Gmel.) Lindb.
On earth, Aroostook Falls, New Brunswick, Sept. 7th, 1899; on earth at South Indian, Carleton Place, Algonquin Park and Ottawa, Ont. (Macoun.)
Subsp. pusillum, Hedw.
Drummond's No. 118 and Prof. Fowler's specimen from New Brunswick referred to tortile in Cat. Can. Musci 45 belong here. Rather common by the roadside near the Mer Bleue, and at Rockcliffe, Ottawa, Ont. (Macoun.)
On earth by roadsides at Louisburg, Baddeck, Grand Narrows, and Margaree, Cape Breton Island, N.S., Aug. 1898. Rather common. (Macoun.)
168. D. homomallum, (Hedw.) Hampe.
On earth by the roadside at Louisburg, Cape Breton Island, N.S., Aug. 18th, 1898. (Macoun.)
993. D. elatum, Kindb. Bryol. N. Am. & Eur. 181.
Leptotrichum flexicaule, var. brevifolium, Kindb. Cat. Can. Musci., 46.
169. D. flexicaule, (Schleich.) Hampe.
On rocks in a ravine, Big Intervale, Margaree, Cape Breton Island, N.S., July, 1898. (Macoun.) Common about Dawson, Yukon, in swampy places. (Williams.)
Subsp. densum, (Schimp.) Kindb.
On rocks in the Crow's Nest Pass, Rocky Mountains, Aug., 1897. (Macoun.) Collected between the Big and Little Salmon rivers, Yukon, in good fruit, June 16th, 1899. (Williams.)
994. D. suboblongum, Kindb.
On rocks, Moose Mountain, Elbow River, Rocky Mountains, June 30th, 1897; summit of Tunnel Mountain, Banff, Rocky Mountains, Alta., July 6th, 1891. (Macoun.)
170. D. pallidum (Schrieber) Hampe.
In woods near Niagara Falls, Ont., June 27th, 1892, on earth in woods at Leamington, Essex Co., Ont.; also at Jordan Station, Lincoln Co., Ont., 1901. (Macoun.)
995. D. Schimperi, Lesq.
Leptotrichum Schimperi, Lesq.; Lesq. & James, Mosses of N. America, 108.
On earth along Shawnigan Lake and by ditches at Comox, Vancouver Island, 1893. (Macoun.)
171. D. glaucescens, (Hedw.) Hampe.
On granite rocks, shore of Stony Lake, Peterboro' Co., Aug.,
1892. (Thos. Walker.) On damp rocks, Algonquin Park, Ont., July 1900. (Macoun.)