POTAMOGETONACE^E. 209 



805. P. polygonifolius, Powr. 



Native; in ditches and slow stream?, frequent. 

 G. Durslej. Berkeley. Yate Common. 

 S. In the canal at Radford. South Brent. Pools on 

 Mendip near the Mhieries and towards Wells. VII. 



806. P. rufescens, Schmd. 



Native ; in slow streams and ditches, rare. 



G. Near St. Philip's Marsh ; Dr. H. 0. Stephens. 



S. Marsh ditches near Axbridge. VII. 



807. P. lucens, L. 



Native ; in rivers and deepish water, frequent. 



S. Frequent in the Avon between Bath and Bristol. In 

 the river Brue. In the canal near Radford. Nailsea 

 Moor. VI. 



808. P. perfoliatus, L. 



Native ; in deep water, rare. 



S. Plentiful in the canal near Batb. In the river Avon 

 at Brislington. VII. 



809. P. crispus, L. 



Native ; in ditches and ponds, common. VI. 



810. P. pusillus, L. 



Native ; in ditches and ponds, frequent. 



G. River Frome near Stapleton ; Mr. G. H. K. T/uvaitof. 



S. River Avon near the Cotton Mills, and towards 



Keynsham. In the canal by Bath; Add. FL Bathon. 



Yatton. VI. 



811. P. pectinatus, L. 



Native ; in marsh ditches, frequent. 



G. Ditches in Shirehampton Marshes. St. Philip's 



Marsh. 

 S. Ditches near Pill ; Mr. W. E. Green. Kingston 



Seymour ; Mr. D. Fry. VI. VII. 



Q 



