CATALOGUE OF CANADIAN PLANTS. 207 



84. POTTIA, Ehrh. 

 154. P. truncatula, Linn. 



Pottia truncata, Fuern. Cat. Can. Musci. 42. 



On ground in open places at Edmonton, Ont., Nov. 5th, 1892. 

 {Jas. White.) 



157. P. Heimii, Fuern. 



On earth, Farewell Creek, Cypress Hills, Assa, June 27th, 1895. 

 {Macoun.) 



158. P. latifolia, var. pilifera, (Brid.) Muell. 



On bare earth of the river bluff just below Dawson, Yukon, 

 1899. {Williams.) 



35. DIDYMODON, Hedw. 



160. D. rubellus, (Hoffm.) Bruch & Schimp. 



On earth and rocks, Half Way Brook, Cape Breton Island 

 N.S., Aug., 1898 ; on rocks. Moose Mountain, Rocky Mountains 

 Alta., June, 1897 ! '" a ravine at Woodstock, N.B., July, 1899. 

 {Macoun.) Canon City, Dyea Creek, Alaska ; also common at 

 Dawson, Yukon, 1899. {Williams.) 



161. D. Canadensis, Kindb. 



Newfoundland. {Waghorne.) 



989. D. subruber, Kindb. Revue Bryol. 1896. 



Leaves as in D. rubellus, but often dentate. Perichetial leaves 

 long-subulate, not recurved. Capsule curved ; lid rostrate. Dioe- 

 cious. 



On rocks at iVIorley, Banff and " Dry Canon," Devil's Lake, 

 Rocky Mountains, Alta., Aug. nth, 1891. {Macoun.) 



162. D. luridus, Hornsch. 



On damp limestone rocks, Credit Forks, Ont., Sept., 1892. 

 {Jas. White) 



990. D. trachyneuron, Kindb. Bryol. N. Am. & Eur. 275. 



Leaves short-attenuate, subacute, brittle ; costa pale, papillose 

 at the back, sometimes excurrent. Tufts low, green. Capsules 

 unknown. 



