W. WEST AND G. S. WEST : ALGA-FLORA OF YORKSHIRE. 55 



223. Closterium striolatum Ehrenb. 



S.W. — Greetland, near Halifax. Frizinghall. CuUingworth. 

 Keighley Moor. 



Mid AV. — Adel Bog. Baildon. Rombald's Moor. Eldwick. 

 Ilkley ! (W. H. Dikes). Wigton Moor. Cocket Moss, near 

 Giggleswick. Cam Fell. 



N.W. — Mickle and Cronkley Fells. Great Shunnor Fell. 

 Bog near Widdale Beck. 



N.E. — Pilmoor, near Thirsk. Terrington. Carlton Bank. 

 Searaer. 



S.E. — Riccall and Skipwith Commons. 

 Var. orthonotum Roy. 



Mid W.— Above Eldwick. Black Hill, near Settle. Malham 

 Tarn Bog. Whernside. 



224. Closterium intermedium Ralfs. 



S.W.— CuUingworth. 



Mid W.— Baildon. Ilkley (W. H. Dikes). Cocket Moss, near 

 Giggleswick. Whernside. 

 N.W.— Great Shunnor Fell. 

 N.E.— Strensall. 

 S. E. —Skipwith Common ! (Rev. W. Fowler). 



Var. sculptum Racib. forma eboracense Turner. 

 N.E. —Strensall (W. B. Turner). 



Var. hibernicum West. 

 N. E.^Terrington. 



225. Closterium ulna Focke, 1847. 



[Syn. Closterium directum Arch. 1862]. 

 Mid W. — Cocket Mos';, near Giggleswick, and Giggleswick 

 Common. Bog two miles south of Clapham. 



226. Closterium attenuatum Ehrenb. 



N.E. — Strensall! (W. B. Turner). Pilmoor, near Thirsk. 



227. Closterium lineatum Ehrenb. 

 S.W.— Frizinghall. 



Mid W.— Adel Bog. Baildon, Wigton Moor. 



