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W. WEST AND G. S. WEST : ALGA-FLORA OF YORKSHIRE. 33 



112. Mougeotia depressa (Hass.) Wittr. 



[Syn. Mesocarpus depressus Hass.]. 

 N,\V, — Mickle and Cronkley Fells. River Ure. 

 N.E. — Scarborough Mere. 



113. Mougeotia gracillima (Hass.) Wittr. 



[Syn. Stmcrospenjiuni gracillinium (Hass.) DeBary]. 



Mm W. — Rombald's Moor. Blubberhouses (W. B. Turner). 

 Ingleborough. Penyghent. Ribblehead. Cowgill Wold Moss, 



Widdale Fell. 



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



N.E. — Strensall. Seamen 



T14. Mougeotia viridis (Kiitz.) Wittr. 



[Syn. Staiirospermum viride Klitz.]. 

 S.W. — Near Rotherham. Cullingworth ! (T. Hebden). 

 Mid W. — Bog, two miles south of Clapham. Austwick. 

 Horsforth (J. Abbott). 



S.E. — Loftsome Bridge, near Wressle. 



115. Mougeotia quadrangulata Hass. [Syn. M. quad- 



rata (Hass.) Wittr. ; Staurospermu?n quad7'atum 

 (Hass.) De Bary]. 

 N.E. — Strensall. Pilmoor, near Thirsk. 



116. Mougeotia capucina (Bory) Ag. 



N.E. — Pilmoor, near Thirsk, very fine (vi., 98). 



Sub-Family Zygneme^k. 



Genus DEBARYA Wittr. 



117. Debarya calospora (Paha) Nob. [Syn. Mougeo- 



tiopsis calospora Palla in Ber. der Deutsch. Botan. 

 Gesellsch., Jahrg. 12, 1894, heft 8, pp. 228-236, 

 t. xviii.]. 

 N.E.— Pilmoor, near Thirsk. 



We showed this interesting plant to be a true species of 

 Debarya in Ann. of Bot, March, 1898, vol. 12, p. 49; it cer- 

 tainly possesses pyrenoids, which, as in D, Icevis (Kiitz.) West 

 and G. S. West, are somewhat variable in size and disposition, 



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