WATSONIA 



JOURNAL OF THE 

 BOTANICAL SOCIETY OF THE BRITISH ISLES 



Editor: E. F. WARBURG, MA.. Ph.D. 



Vol. 3 DECEMBER 1953 Pt. 1 



CONTENTS PAGE 

 MoNTiA FONTANA L. By S. M. Walters 1-6 



NUPHAR INTERMEDIA LeDEB., A PRESUMED RELICT HYBRID, IN BRITAIN. 



By Yolande Heslop-Harrison . . . . . . . . . . . . 7-25 



Regional variation of Alnus glutinosa (L.) Gaertn. in Britain. 



By D. N. McVean 26-32 



Epipogium aphyllum Sw. in Buckinghamshire. By R. A. Graham . . 33 



Arctic plants not yet found in Britain. By Nicholas Polunin . . 34-35 



A 17th Century contribution to the Scottish flora. 



By F. H. Perring 36-40 



Proliferation of spikelets in British grasses. By P. R. Wycherley 41-56 



The distribution of Dryopteris borreri Newm. in the British 



Isles. By P. J. Pugh 57-65 



Notes on Carex flava and its allies : I — A sedge new to the British 



Isles, By Elizabeth W. Davies 66-69 



Notes on Carex flava and its allies : II — Carex lepidocarpa in the 



British Isles. By EHzabeth W. Davies 70-73 



Notes on Carex flava and its allies : III — The taxonomy and 

 morphology of the British representatives. 



By Elizabeth W. Davies 74-79 



Notes on Carex flava and its allies : IV — Geographic distribution. 



By Elizabeth W. Davies 80-84 



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