W. WEST AND G. S. WEST ; ALGA-FLORA OF YORKSHiRE. log 



493— Staurastrum inflexum Br(5b, 

 Mid W. — Malham Tarn. Bog two miles south of Clapham. 

 N.W.— Mickle Fell. 



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

 Stokesley. 



494. Staurastrum polymorphum Bre'b. 

 S.W. — Rawcliffe Common. Denholme. 



Mid W. — Rombald's Moor. Wigton Moor. Malham Tarn. 

 Bog two miles south of Clapham. Ingleborough. Penyghent. 

 South of Cray Moss. Cam Fell. 



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

 Birkdale Tarn Moss. Great Sleddale. Keld. Near Moorcock 

 Inn. Mossdale Moor, Widdale Fell. Bog near Widdale Beck. 



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



S.E. — Riccall Common. 



495. Staurastrum crenulatum (Nag.) Delp. 

 Mid W. — Roundliay Park, T.eeds. 



N.W.— Cautley Spout. 



N.E. — Pilmoor, near Thirsk (with 5-rayed forms). Stokesley. 



496. Staurastrum eboracense Turn. 

 N.E. — Strensall Common (W. B. Turner). 



497. Staurastrum Heimerlianum Liitkem. 



[Syn. ^S! cruciatum Heimerl.]. 

 Mid W.— Cam Fell (viii. 1896). 



498.— Staurastrum gracile Ralfs. 

 S.W.— Rawcliffe (H. F. Parsons). Wakefield (W. H. Dikes). 

 Mid W. — Malham Tarn. Bramhope (J. Abbott). Cocket 

 Moss, near Giggleswick. Ingleborough. 



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

 Thirsk. 



S.E. — Riccall Common. 



Var. nanum Wille. 

 N.E. — Pilmoor, near Thirsk. 

 S.E. — Skipwith Common. 



