36 



YORKSHIRK NATURALISTS' UNION. 



N.W.— Cronkley Fell. 

 N.E.— Pilmoor, near Thirsk. 



130. Spirogyra Weberi Kiitz. 



S.W. — Hainworth (T. Hebden). Cullingwortb. Keighley. 

 Mid W. — Boston Spa. 

 N.W.— River Ure. 



131. Spirogyra Grevilleana (Hasy.) Kiitz. 



S.W.— Dewsbury (C. B. Crawshaw). Keighley. 



132. Spirogyra Hassallii (Jenner) Petit. 

 S.E. — Newsholme, near Howden. 



^33- Spirogyra insignis (Hass.) Kiitz. 



S.W. — Near Mirfield. Near Bradford. Wilsden. 

 N.W. — Near Sedbergh. 



134. Spirogyra gracilis (Hass.) Kiitz. [Syn. S.Jlar-esa/is 



(Hass.) Kiitz., forma gracilis (Hass.) Cooke, and 



fornix. J)arva (Hass.) Cooke; Zyg// e;n a graa'fe Ila.5S.; 



Z. parva Hass.]. 



S.W. — In dam at Kexborough (C. B. Crawsliaw and C. P. 



Hobkirk). 



Mid W.— Ilkley. 

 N.W.— Lund's Fell. 



Var. flavescens (Hass.) Rabenh. [Syn. S, flavescens 



(Hass.) Kiitz.; Zygnema flavescens Hass.]. 

 S.W. — Soothill, Dewsbury (C.B. Crawshaw). Holmfirlh (C. P. 

 Hobkirk). Cullingwortb. 



Mid W.~Roundhay (W. B. Turner). Baildon. Rombald's 

 Moor. Austwick. Grassington. 

 N.W. — Cronkley Fell. 

 N.E. — Strensall. Scarborough Mere. 



135. Spirogyra communis (Hass.) Kutz. [Syn.Z>'^//^;;/(r 



commune Hass, ; Spirogyra iongata (Vauch.) Wittr., 



1872]. 

 S.W.— Fixby. Bradford. 

 Mid W.— Adel Bog (W. B. Turner). Malham. 



Trans- Y-N.U., 1896 (pub. Sept 1900), Bot. Series, Vo!, 5 



i. 



