NAIADACE^E. 105 



Racton, by Gounter's Pool. Aldsworth Ponds. Fish- 

 bourne. Pool by the Aldermere. Westbourne. Chidniere. 

 Chidham. Sidlesham. II. Chiltington. Amberley, E.S.M. 

 III. Henfield, Bor. IV. Nr. Lewes, Bor. V. Ditch by 

 Pevensey road, Langley, It. VI. Guestling. Winchelsea, 

 B. VII. Nr. Tunbridge Wells, E.J. 



L. MINOR, L. Lesser Duckweed. A. 6-7. Stagnant 

 waters ; com. 



L. GIBBA, L. Gibbous Duckweed. A. 7-8. Pools and 

 ditches; not com. I. Lavant, F.V.P. Pool nr. Chichester. 

 Sidlesham, E.S.M. II. Ditch nr. the Arun, Arundel, 

 1899, C.E.S. III. Henfield, Bor. IV. Nr. Lewes, Bor. 

 Berwick, E.E. V. Ditch by the side of Pevensey road, 

 Eastbourne, in flower, 1872, E. VI. Winchelsea. Cam- 

 ber, B. VII. About Tunbridge Wells, E.J. 



Note. Mr. Borrer is said to have been the first who 



noted the fructification of this species in England, at 



Lewes, June, 1804," Syme. 



L. POLYRHIZA, L. Greater Duckweed. A. (Flowers not 

 known in Britain.) Ponds and ditches; rather rare. I. 

 Midhurst, H.E.F. Graffham. Birdham, E.S.M. Bosham. 

 Chichester Canal, A. II, Greatham, E.S.M. III. Hen- 

 field, Bor. IV. Berwick, E.E. V. Littlington. Wartling. 

 Marsh nr. Pevensey, R. VI. Winchelsea. Pett. Guest- 

 ling, B. VII. Nr. Tunbridge Wells, E.J. 



WOLFFIA ARRHIZA, Wimm. Rootless Duckweed. A. 9. 

 Ditches ; rare. II. Ditch a little west of North Stoke 

 Church; an interesting addition to the Sussex list, 1901. 

 Discovered by Messrs. Marshall and Salmon. 



NAIADACE^B. 



POTAMOGETON NATANS, L. Floating Pondweed. P. 

 6-7. Rivers and ponds; com. 



P. POLYGONIFOLIUS, Pour. Oblong-leaved Pondweed. 

 P. 6-7. Ditches on heathy and boggy ground ; rather 

 com. I. Hunston, A. Mundham, Hb. C. Graffham. II. 

 Nutbourne Peat Marsh, Pulborough, Hb. C. Amberley 

 Wild Brooks, E.S.M. III. Henfield, Bab. IV. Chailey 

 1894, H.H. V. High Wood, Bexhill! E. VI. Dallington 

 Forest. Guestling. Pett, B. VII. Tilgate Forest. Ash- 

 down Forest, abund., E.J. 



P. PLANTAGINEUS, Du Croz. Plantain-leaved Pondweed. 

 P. 6-7. Ditches; very rare. V. Marsh below Tut Barn, 

 Eastbourne, sp., JR. 



P. RUFESCENS, Schrad. Reddish Pondweed. P 7 

 Ditches ; rare. I Harting, W. II. Pool nr. the Arun, 

 above North Stoke E.S.M. III. W. Grinstead. Hen- 

 field Hb. Bor. V. Marsh ditch by the road from Pevensey 

 to Wartling, E. Berwick, E.E. VI. Guestling. Pett. 

 Marsh nr. Icklesham, B. 



