CATALOGUE OF CANADIAN PLANTS. 217 



fully discussed. In the article before me she reduces the three 

 species to one and retains S. aquatica var. nigrescens, the original 

 of S. Nevii, as regards my specimens. I fully agree with Mrs. 

 Britton in her decision as I could see no reason for separating 

 the plants when fresh except by their color. 



No specimens of this species have been collected since the 

 publication of Part VI. 



232. S. aquatica, HOOK. 



Fine fruiting specimens collected near Canon City. Dyea Creek, 

 Alaska. As usual, in clear mountain streams, the plants are 

 blackish and robust ; also collected sterile specimens in Miles's 

 Canon and in fruit on the Yukon at Dawson, 1899. (Williams.} 

 On rocks in Chilliwack River, B.C. (/. M. Macoun.) 



44. GRIMMIA, Ehrh. 



235. G. conferta, FUNCK. 



On boulders on Moose Mountan, Rocky Mountains, Alta., 

 June, 1897 ' on rocks by the Petewawa River, Algonquin Park, 

 July 24th, 1900. (Macoun.) Marsh Lake, Yukon, 1899. (Wil- 

 liams.) 



236. G. velutina, KINDB. Revue Bryol. 1896. 



G. mannice, Cat. Can. Musci, 62. 



Leaves broad-ovate, subobtuse, recurved all around and not 

 carinate ; cells subquadrate pellucid; hair-point rarely present. 

 Tufts brown and velvet-like when dry, low as in G. mannice, but 

 more compact. Capsules unknown. 



On dry sun-baked rocks on the right bank of the Fraser 

 River, beyond the bridge at Lytton, B.C., April 1 7th, 1889. 

 (Macoun.) 



237. G. apocarpa, HEDW. 



On dry rocks, Big Intervale, Margaree, Cape Breton Island, 

 N.S., July, 1898. (Macoun^ On rocks at Credit Forks, Ont, 

 1892. (jas. White.) Growing in blackish tufts on perpendicular 

 rock walls at Lake Lindeman, Yukon. (Williams.) 



238. G. gracilis, SLEICHER. 



On granite rocks, Credit Forks, Ont., 1892. (Jas. White.) On 

 rocks in ravines at P/Iargaree, Cape Breton Island, N.S., 1898 ; on 



