34 



YORKSHIRE NATURATJSTS' UNION. 



The zygospores are less elliptical than those figured by Palla. 

 Thickness, fil. 13 p,; zygospores i8--2o/xx 22-26 /x. 

 Not previously recorded for the British Isles. 



Genus ZYGNEMA Ag., 1S17; em. DeBary, 1858. 



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



gonium parvulum Kiitz., 1849 ; Zygnema parindiati 



(Kiitz.) Cooke, 1882]. 

 N.VV.—Cronkley Fell 



N.E.— Strensall. 



119- Zygnema Ralfsii (Hass.) De Bary. 



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

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

 N.E.— Strensall (VV. 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. 



I2T. Zygnema cruciatum (Vauch.) Ag. 



S.W. — Wibsey. Cullingworth. 



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



N.W.— Cronkley Fell. Sedbergh. 



122.— Zygnema stellinum (Vauch.) Y\g. 



S.W.— Thornton Moor. 



Mid W.— Eldwick. Cam Fell. 



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

 N.E.—Strensall ! (W. B. Turner). 



123. Zygnema Vaucherii Ag. 



N.E.— Pilmoor, near Thirsk. 



Var. stagnale (Hass.) Kirchn. 

 Mid W.— Baildon. 



N.W.— Mickle Fell. 



N.E,— Strensall (W. B. Turner). 



124. Zygnema anomalum (Hass.) Cooke. 



[Syn. Tyndaridea anouiala Hass.]. 

 S.W,—Sharlston (H. F. Parsons). 







1 



i 



i 



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



f 



