24 YORKSHIRE NATURALISTS UNION. 



Mid W.— Add Bog ! (J. Abbott). Wetherby (H. F. Parsons). 

 Leathlej'. Near Norwood Hall, above Lindley Reservoir. 

 N.E.— Strensall (W. B. Turner). 

 S.E. — Beverley. 



Var. pulchella (Kiitz.) Rabenh. 

 Mid 'W. — In stream, Penj'ghent. 



Genus STIGEOCLOXIUM Kiitz., 1843. 



75. Stigeodonium protensum (Dillw.) Kiitz. 

 S.W.— Liversedge : (Rev. W. Fowler). Well, Darton (C. B. 



Crawshaw and C. P. Hobkirk). Wibsey. Keighley. 



Mid ^^'.— Farnley (W. B. Turner). Burley ! (W. Nuttall). 

 Ilkley. 



N.E. — Pilmoor, near Thirsk. 



76. Stigeoclonium nanum (Dillw.) Kiitz. 



S.W.— Near Dewsbury (C. B. Crawshaw and C. P. Hobkirk). 

 Ogden Ciough. Coley, near Shelf. Bradford. Heaton. 



77. Stigeoclonium fastigiatum Kiitz. 



S.W.— Soothill, Dewsbury (C. B. Crawshaw and C. P. Hob- 

 kirk). Near Wakefield. On stones, in stream, Halifax. 

 Mid W. — Still waters of a spring, Moughton Fell. 



78. Stigeoclonium tenue (Ag.) Rabenh. 

 S.W. — Liversedge ! (Rev. W. Fowler). 



Mid A\'. — Horton-in-Ribblesdale. Ribblehead. 

 X.W. — Near •Moorcock Inn.' 

 N.E. — Scarborough Mere. 



79. Stigeoclonium uniforme (Ag.) Rabenh. 

 S.W. — On the surface of a pond, Frizinghall (iv., 95). 

 Stratum yellow-green, filaments of uniform diameter (7-5 u) 



forming intricate, contorted bundles ; at places somewhat 

 geniculate. Branches scarce, mostly unilateral, short, much 

 attenuated and with piliferous apices. Cells of main filaments 

 equal to, or twice longer than, the diameter; those of the 

 branches as long as broad. Zoogonidia formed by the division 

 of the cell-contents into four. 



Previously unrecorded for the British Isles. 



Trans. Y.N.U., 1836 (pub. Sept. .gog). Bot. Series, Vol. 5. 



