200 GEOLOGICAL SURVEY OF CANADA. 



common on decayed logs about Dawson, Yukon, 1899. {Wil- 

 liams.) 



110. D. longifoliuin, Hedw. 



On dry granite boulders in the Parry Sound District, Ont., May, 

 1893. (J^^- W^iiie.) On logs and rocks. Big Intervale, Mar- 

 garee, on earth, sand and rocks, very common, at Half Way 

 Brook, Cape Breton Island, N.S., July, 1898 ; also on boulders 

 at Meech's Lake, near Chelsea, Que., 1893. 



Var. subalpinum, Milde. 



On rocks, Blackvvater River, Lake Nipigon, Ont., July, 1884 ; 

 on rocks at Sudbury Junction, Ont., 1884 ; on rocks 5 miles 

 below Hector, Rocky Mountains, B.C., Aug., 1890. {Macoun.) 



112. D. BoDJeani, De Not. 



On earth in woods, Quecnston Heights Ont., May nth, 1901 ; 

 on damp earth, Pelee Point, P^ssex Co., Ont., May 29th, 1901 ; in 

 wet woods, Camlachie, Lambton Co., Ont., June i8th, 1901. The 

 latter specimens in fine fruit. {Macoim.) On rather dry ground 

 at Lake Lindeman, Yukon, 1899. {VVillia?ns.) 



980. D. Roellii, Kindb. in Hedwigia, 1896, p 60. 



Differs from D. Bonjeani, in the leaves neither spreading nor 

 undulate, and their costa sometimes bilamellate. More nearly 

 allied to D. scoparitim, but differs from it in the leaves being faintly 

 crenulate at the acumen, their upper cells suboblong, less porose ; 

 costa shorter, and nearly smooth at the back. 



Collected on Vancouver Island by J. Roell. On rocks, Cadboro 

 Bay, near Victoria, Vancouver Island, May 31st, 1893. {Macoun.) 



981. D.angUStunijLiNDB.; Card. & Then Bot. Gaz , Vol. XXX., 

 p. 15. 



A polar moss, known only from some localities of North Finland 

 and Siberia. It is easily distinguished from D. Bonjeani, De Not., 

 by the leaves being straight, not undulate, convolute, and entire, 

 and by the'thinner costa, the less porose cells, and the perichaetial 

 leaves long-piliferous. 



A few stems found amongst Aulacomnium turgidum, northwest 

 shore of Hudson Bay Lat. 63'^ 55', 1893-1894. {G. Comes.) Sterile 



