W. WEST AND G. S. WEST r ALGA-FLORA Of VORK.SHIRE. 45 



N.E,---Strensall ! ; Gormire (W. B. Turner), Pilmoor, near 

 Thirsk. Terrington. Carlton Bank. Stokesley. 

 S.E.^Riccall Common, 



173. Penium interruptum Breb. 



N.W.— Mickle Fell, '(keat Shunnor Fell. 

 N.E. — Pilmoor, near Thirsk. 



174. Penium Libellula (Focke) Nordst., 1888. [Syn. 



Closteriuin Libellula Focke, \%^^ \ Peniiini closterioides 



Ralfs, 1848]. 

 S.W. — Cullingworth. 



Mid W.— Ilkley (W. H. Dikes). Whernsicle (iii. 1893). 

 N.W.— -Mickle and Cronkley Fells. Reeth. 

 N.E. — Seamer. 



175. Penium Navicula Breb. 



S.W.— Thornton Moor. Keighley Moor. 



Mm W. — Baildon Moor. Cocket Moss, near Giggleswick. 



Bog two miles south of Clapham, Old Cote Moor, and near 



Buckden. 



N.W.— Mickle Fell. 



N.E.— Pilmoor, near Thirsk (with zygospores, vii. 1898). 



Carlton Bank. Stokesley. 



S.E. — Riccall Common. 



176. Penium oblongum DeBary. 



S.W.— Greetland, near Halifax. Ogden Clough. Keighley 



Moor. 



Mid W.— Add (\V. B. 1 urner). Above Eldwick. Ilkley. 



Ingleborough. Cray Tarn, 2,000 ft. Cam Fell. Ribblehead. 

 Whernside. 



N.W.— Mickle Fell. Great Sleddale. Mossdale Moor, 



Widdale Fell. 



N.E. — Carlton Bank. 



177. Penium spinospermum Joshua. 



Mid W. — Cowgill Wold Moss, Widdale Fell (with zygospores). 

 Diam. zygosp. with processes 29-33 Z^* 





ii 



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