W. WEST AND G. S. WEST: ALGA-FLORA OF YORKSHIRE. 133 



645. Glaeocystis frustulosa (Carm.). 



[Syn. Chlorococcum frustulosum (fZixx\\\.) Rabenh. ?]. 

 N.W.— Cautley Spout. 



646. Glaeocystis vesiculosa Nag. 

 S.W.— Rawcliffe. Near Keighley. 



Mid W. — Baildon. Wigton Moor. Malham. Boston Spa. 

 Ilkley. Cocket Moss, near Gigglesvvick. Bowland Knotts. 



N.E. — Gormire (W. B.Turner). Strensall. On moist ground, 

 Whitenab, Scarborough. Pilmoor, near Thirsk. Malton. 



S.E. — Riccall Common. Newsholme. Routh. 



647. Glaeocystis rupestris (Lyngb., 1819) Rabenh. 1863. 



\^yn. Fa/>nella rupestris Lyngb., 1819]. 



S.W. — Horton. Bradford, on damp walls, etc. Bingley. 

 Keighley. 



Mid W. — Meanwood (W.B.Turner). Wigton Moor. Baildon. 

 Bolton Woods. Cowside Beck, Arncliffe. 



N.W. — Frequent on rocks in glens, Cautley Spout. 



N.E.- Strensall ! (W. B. Turner). 



648. Glaeocystis botryoides (Kiitz.) Nag. 

 S.W. — Near Keighley. 



N.W.— Mickle Fell. 



649. Glaeocystis infusionum (Schrank) West & G. S. 

 West. [Syn. ChIorococcu?n ififiisionu/n (Schrank) 

 Menegh.]. 



S.W.— Frizinghall. 

 Mid W. — Boston Spa. 

 N.E. — Pilmoor, near Thirsk. 



Genus KIRCHNERIELLA Schmidle. 



650. Kirchneriella obesa (West) Schmidle. 



[Syn. SelenasUum obesinn West]. 

 N.E. — Pilmoor, near Thirsk. 



Var. pygmaea West & G. S. West. 

 Smaller than the type. Cells narrower and less curved 

 Thickness of cell 2 /x. 



Bot. 3-1 



