12 yorkshire naturalists' union. 



Class FLORIDE/E. 

 Family BATHACHOSPERMEyE. 

 Genus BATRACHOSPER^UM Roth., 1797. 



1. Batrachospermum moniliforme Roth. 



Mid W. — Stream near Towton. Washburn Valley. Blubber- 

 houses (E. Howgate). Malham (H. F. Parsons). Penyghent. 

 Leeds district (W. B. Turner). Meanwood (J. Abbott). Baildon. 

 Sherburn Town Drain (F. A. Lees). Malham Tarn (C. B. 

 Crawshaw and C. P. Hobkirk). Markington ! (Rev. J. S. Tute). 



S.AV. — Battye-ford near Mirfield (H.F. Parsons). Upper Brad- 

 field (Rev. A. Gatty). Swinefleet Warping-Drain (H. F. Par- 

 sons). Skelmanthorpe. Allerton. 

 Van stagnale Ag. 



Mid W.— Malham Cove (C. B. Crawshaw and C. P. Hob- 

 kirk). 



2. Batrachospermum vagum (Roth.) Ag. 

 Mid W.— Kirkstall (W. B. Turner). Near Giggleswick. 

 S.W.— Bingley. 



N.E. — Strensall (var.; W. B. Turner). Castle Howard. Scar- 

 borough Mere. 



Var. keratophytum (Bory) Sir. 

 Mid W. — In stream, Horton-in-Ribblesdale. 



3. Batrachospermum atrum (DiUw.), Harv. 



Mid AV. — Barkston (H. F. Parsons). Meanwood ! (J. Stub- 

 bins). 



Genus CHANTRANSIA Fries, 1S25. 



4. Chantransia chalybea (Lyngb.) Fries. 



S.W. — Near Halifax. Hainworth (T. Hebden). Marley, near 

 Bingley. 



Mid W.— Baildon. 



5. Chantransia violacea Kiitz. 



S.W. — On dripping stones amongst Rhynchostegium rusci- 

 forme, Horton Park, Bradford. 

 Mid W. — Eldwick. Ingleborough. 



Trans. Y.N.U., 1896 (pub. Aug. igcx)). Bot. Scries, Vol. 5. 



