32 GEOLOGICAL AND NATURAL HISTORY SURVEY OF CANADA. 



Sajierior ; on rocks, Eoger's Pass, Selkirk Mountains, B.C. {Macoun.) 

 Crevices of rocks, Elk Eiver, Eocky Mountains. (Dawson.) About 

 Lake Superior (93), and at Great Bear Lake (94). {Drummond.) 



(111.) D. albicans, Bruch & Schimp. ; Lesq. & James, Mosses of 

 N. America, 71 ; Canadian Musci, No. 404. 



Crevices of rocks at the summit of the Gold Eange, north of Griffin 

 Lake, B.C., 1889, alt. 7,000 feet ; on rocks along the Asulcan Glacier, 

 Selkirk Mountains, and on rocks by the railway three miles below 

 Hector, and at Lake Agnes, Eocky Mountains, 1891. (Macoun.) 

 Greenland. {Fl. Gr.) 



(112.) D. Bonjeani, De Not. ; Braithw. Brit. Moss-Flora, 149. 



D. paiwtre, Lesq. & James Mosses of N. America, 74 ; Canadian Musci 

 No. 409. 



In Dow's Swamp, near Ottawa ; " Big Swamp," Murray, and five 

 miles north of Colborne, Northumberland Co., Ont. ; swamps. Porcupine 

 Mountains, Man. ; wet rocks, North Arm, Burrard Inlet, B.C. ; and in 

 wet woods at Victoria, Vancouver Island. (Macoun.) Peat bog at 

 base of McKay's Mountain, Port Arthur. (Mrs. E. G. Britton.) 

 Nulato and Sitka. (Roth. Alask.) Jakobshavn, Greenland. (R. Brown.} 



*D. Columbiae, Kindb., Bull. Torr. Bot. Club, Vol. XVII., 86. 



Cajspitose, tomentose and yellowish green. Leaves open-erect, 

 undulate above, ovate-lanceolate, obtuse or short-acute, serrate at the 

 back and on the borders above ; the uppermost cells oblong, the others 

 linear, except the quadrate ones at the angles ; costa narrower, dis- 

 appearing below the apex. Capsule solitary, narrow-cylindric, curved, 

 striate, pale brown, not strumose, beak as long as the capsule ; 

 pedicel yellow. Dioecious. 



Differs from the true D. Bonjeani, De Not. (D. palustre, Schimp.) 

 principally in the leaves being blunt, serrate below the middle, the 

 costa serrate also below the middle and the capsule without a neck. 



Damp woods, by the borders of ponds. Cedar Hill, near Victoria, 

 1887 ; and on Campbell Hill, Cache Creek, B.C., alt. 2,500 feet. May 

 25th, 1875. (Macoun.) 



(113.) D. undulifolium, C. M. & Kindb. (n. sp.) 



Dioecious. Plants robust ; branches thick. Stem sparingly, and 

 only the base radiculose, (furnished with rhizoids) 3-4 cm. high. Leaves 

 green or golden glossy, faintly undulate, loosely appressed, broad 



