34 YORKSHIRE NATURALISTS' UNION. 



The zygospores are less elliptical than those figured by Palla. 

 Thickness, fil. 13 /*; zygospores 18-20 /ix 22-26/11. 

 Not previously recorded for the British Isles. 



Genus ZYGNEMA Ag., 1817 ; em. DeBary, 1858. 



118. Zygnema ordinarium Berk., 1832. [Syn. Zygo- 

 goniuin parvulum Kiitz., 1849 ; Zygnema parvulum 

 (Kiitz.) Cooke, 1882]. 



N.W.— Cronkley Fell. 

 N.E.— Strensall. 



119. Zygnema Ralfsii (Hass.) De Bary. 



[Syn. Zygogonium Ralfsii (Hass.) Kiitz.]. 

 Mid W. — Bramhope and Adel (J. Abbott). 

 N.E.— Strensall (W. B. Turner). 



120. Zygnema pectinatum (Vauch.) Ag. 



S.W.— Near Heckmondwike (C. B. Crawshaw and C. P. Hob- 

 kirk). 



N.W.— Great Shunnor Fell. Lund's Fell. 



121. Zygnema cruciatum (Vauch.) Ag. 

 S.W. — Wibsey. Cullingworth. 



Mid W. — Bramhope (J. Abbott). Baildon. Ingleborough. 

 N.W.— Cronkley Fell. Sedbergh. 



122. — Zygnema stellinum (Vauch.) Ag. 

 S.W. — Thornton Moor. 

 Mid W.— Eldwick. Cam Fell. 

 N.W. — Mickle and Cronkley Fells. Cotterdale. 

 N.E.— Strensall ! (W. B. Turner). 



123. Zygnema Vaucherii Ag. 

 N.E. — Pilmoor, near Thirsk. 



Var. stagnate (Hass.) Kirchn. 

 Mid W.— Baildon. 

 N.W.— Mickle Fell. 

 N.E.— Strensall (W. B. Turner). 



124. Zygnema anomalum (Hass.) Cooke. 



[Syn. Tyndaridea anomala Hass.J. 

 S.W.— Sharlston (H. F. Parsons). 



Trans. Y.N.U., 1896 (pub. Sept. 1900). Bot, Series, Vol, 5. 



