44 GEOLOGICAL AND NATURAL HISTORY SURVEY OP CANADA. 



35. DIDYMODON, Hedw. 



e 



(160.) D. rubellus, Bruch & Schimp. ; Lesq. & James, Mosses of 

 N. America, 104 ; Canadian Miisci, No. 63. 



Weissia curvirostra, Drumm. Muse. Bor.-Am., No. 71. 



Yery common in the country extending from Canada to the Rocky 

 Mountains. (Drummond.) On the ground, Truro, N.S. (Fowler's Cat.) 

 On rocks and earth, Tobique Eiver, N.B. (Say.) On rocks, Canaan 

 Forks, Queen's Co., N.B. (J. Moser.) On rocks. South West 

 Point, Anticosti ; rocks at Campbellton, N.B. ; on rocks, Truro, 

 N.S. ; on damp rocks, Gasp^ Co., Que. ; on rocks, McKay's woods, 

 Ottawa, at Belleville, Owen Sound, Port Dover and Niagara Falls, 

 Ont. ; on rocks at Kakabeka Falls, Kaministiquia Eiver, Lake 

 Superior ; on earth. Lake Winnipegoosis, Man. ; on rocks. Cypress 

 Hills, Alberta ; rocks at Morley, Banff and Hector, Eocky Mountains; 

 at Eevelstoke, Deer Park and Sproat, Columbia Eiver; at Spence's 

 Bridge and Lytton, B.C. ; and frequent on Vancouver Island. (Macaun.) 

 Jakobshavn, Greenland. (R. Brown.) Near London, Ont. (J. JDear- 

 ness.) 



(161.) D. Canadensis, Eindb. (n. sp.) 



Differs from D. rubellus principally in the perichetial leaves being 

 thinner, from the ovate base, abruptly attenuate to a short subulate 

 acumen ; boixiers not reflexed ; basal cells very long ; costa thinner. 

 Dioecious. 



On perpendicular rocks, head of Lake Louise, Eocky Mountains, 

 Aug. 18th, 1891. (Macaun.) 



(162.) D. luridus, Hornsch. ; Lesq. & James, Mosses of N. Ame- 

 rica, 104 ; Canadian Musci, No. 64. 



D. trifarium, Drumm. Muse. Bor.-Am., No. 120. 



About the Falls of Niagara. (Drummond.) Abundant on limestone 

 ledges and great boulders at Jones Falls, near Owen Sound ; on 

 limestone boulders below the Clifton House, Niagara Falls ; on rocks 

 at Hector, Eocky Mountains. (Macoun.) 



(163.) D. rufus, Lorentz ; Greenland Flora, 384. 

 Greenland. (Fl. Gr.) 



