West: Scapania aspera. 



translation of the French description in the ' Revue Bryologique' : 

 ' Dioicous, laxly tufted or sparsely intermixed with other mosses, 

 somewhat robust, almost of equal size with, and somewhat 

 similar to Scapania ceqiiiloha, 2 to 3 cm. hig^h, rigid, shining, 

 younger green to yellowish green, older brownish black, often 

 paler coloured and shining at the apex. Stem simple or sparsely 

 dichotomous, obscurely coloured, brownish-black ; at the back, 

 here and there, except on the highest part of the stem, bearing 

 hyaline, long, smooth, and tufted radicles. Leaves somewhat 

 dense, distichous, of equal size and equidistant, hardly papillose ; 

 antical lobe along the whole length of the suture acute-angular, and 

 in the upper part reflexed, connate with the postical lobe, smaller 

 b}'^ half, convex-rhomboidal, a little distant from the postical lobe, 

 often apiculate, not passing across the stem, with entire margin, 

 or sparsely dentate ; postical lobe very often concave (rarely 

 reflexed) obliquely ovate, round at the apex or very shortly 

 acuminate, very rarely showing a minute apiculus, usually with 

 entire margin, more rarely furnished with sparse teeth ; cells 

 roundish quadrate, in diameter about 0-02 mm., lower ones 

 a little larger, in diameter 0*027 mm., with yellowish membrane, 

 a little incrassate ; trigones angular, distinct, containing 3 to 5 

 large granules ; cttticle slightly papillose ; antheridia two in 

 axils of upper leaves ; male bracts not different from other 

 leaves, not saccate ; gonidia arising on apical leaves, globular- 

 oval, in diameter o"027-o-o33 mm., unibicellular, yellowish- 

 green, membrane delicate ; female inflorescence and fruit wanting. 



Habitats. — Sweden, prov. Uppland, in island Rumaro, on 

 calcareous rocks with other limestone mosses as Myurella 

 julacea, Ditrichnm flexicaiile, Trichostomum tortuosnm, Encalypta 

 contorta, Pleuropus sericeus, etc., by Arnell and Persson in 1903. 



Yorkshire, in Jackdaw Crag Quarry, Tadcaster, mixed w^ith 

 Ditrichum flexicaule, and Trichostomum tortiiosum, 24th Sep- 

 tember 1897, by W. Ingham. 



tiEPATlCS. 



Scapania aspera Miill & Bern.— This hepatic is frequent on 

 shady limestone rocks and walls in the upper parts of the valleys 

 of the Lune, Wharfe, and Aire, as at.Malham, Cowside Beck 

 Dale, Arncliffe, Kettlewell, Grassington, Ingleton, Clapham, etc. 

 The specimens I gathered from some of these places above 

 twenty years ago were passed as S. acquiloba by my then 

 constant correspondent, the late H. Boswell. Mr. Macvicar 

 states them to be true S. aspera. — W. West, Bradford. 



Naturalist, 



