46 GEOLOGICAL AND NATURAL HISTORY SURVEY OF CANADA. 



(168.) L. homomallum, Hampe ; Lesq. & James, Mosses of N. 

 America, 107. 



Didymodon heteromallum, Drumm. Muse. Bor.-Am., No. 119. 



On earth by the torrent that enters Kicking Horse Lake by the 

 station at Hector, Eocky Mountains, 1890. (Macoun.) West side of 

 Eocky Mountains ; sparingly. (Drun^mond.) 



(169.) L. flexicaule, Hampe ; Lesq. & James, Mosses of N. Ame- 

 rica, 107 ; Canadian Musci, No. 66. 



Didymodon flexicaule, Drumm. Muse. Bor.-Am., Nos. 125-126. 



Alpine woods and banks ; about Lac de Bois, Eocky Mountains. 

 (Drummond.) Twelve-mile Pool, Jupiter Eiver, and Salt Lake, Anti- 

 costi ; in a ravine at Whycocogmah, Cape Breton ; on rocks at the 

 mouth of Peace Eiver Canon, lat. 56 ; abundant on wet rocks by the 

 torrent at Hector and at Banff, Eocky Mountains ; on rocks, Lake Mara, 

 atSicamous, B.C. ; abundant on rocks along the Columbia Eiver, above 

 Eevelstoke, also at Deer Park on Lower Arrow Lake, B.C. (Macoun.) 

 Jakobshavn, Greenland. (Fl. Gr.} 



*L. brevifolium, Kindb., n. subsp. 



Leaves very small, from the ovate-oblong base contracted to a 

 shorter point ; costa not excurrent. This form is perhaps a distinct 

 and proper species ; the tufts are quite barren. 



On rocks in the " Dry Canon " near the discharge of Devil's Lake, 

 National Park, Eocky Mountains, Aug. 10th, 1891. (Macoun.') 



Yar. densum, Schimp. ; Canadian Musci, No. 461. 



On rocks at Morley, Banff and Hector, Eocky Mountains ; on damp 

 earth along the Columbia Eiver at Donald and Eevelstoke, B.C. 

 (Jfacoww.) 



(170.) L. pallidum, Hampe; Lesq. & James, Mosses of N. Ame- 

 rica, 107 ; Canadian Musci, No. 67. 



On the ground in woods west of Belleville ; in woods near Bismarck, 

 and at Leamington, Out. (Macoun.} 



(171.) L. glaucescens, Hampe ; Lesq. & James, Mosses of N. 

 America, 108 ; Canadian Musci, No. 68. 



Didymodon glaucescens, Drumm. Muse. Bor.-Am., No. 117. 

 Upon the shores of Lake Superior, and near York Factory, Hudson 



