60 FLOBA OF JEUSEY. 



Pi-esents the usual variations, some of which are obviously 

 mere states of the plant due to the influence of external 

 circumstances, while others seem to be true varieties. 

 P. LITTOKALB Link, occurs on the sands of the coast : it 

 seems next to impossible to disentangle the other names. 



3. P. Kaii Bab. 



Native. Sandy shores. Eare. August to October. 



Sands of the Greve d'Azette and St. Ouen's Bay. Bab. St. 

 Clement's Bay. F. Piquet, sp. 1871 ! Grouville Bay (fairly 

 plentiful in 1901). 



Recorded for Guernsey, Alderney, and Sark. Normandy 

 (rare). Brittany. 



Distinct, I think, though approached by robust forms of 

 P. LiTTOKALE Link. 



4. P. Hydropiper L. 



Native. Damp places. Local. July to October. 



Waterworks Valley. Samares. St. Saviour's Valley. 

 Guernsey (rare). Alderney. Sark. Prance. 



5. P. MINUS Huds. 



Native. Damp places. Extinct. July to September. 



St. Laurence Marsh. J. Piquet, sjj. 1852 ! 

 Prance. 



6. P. Persioaria L. 



Native. Fields and waste places. Frequent. July to 



October. 



Guernsey. Alderney. Sark. France. 



7. P. lapathifolium L. 



Native or colonist. Cultivated ground. Frequent. July 

 to August. 



St. Helier's. St. Ouen's Bay. Fliquet Bay. La Eocque. 

 Samares. St. Laurence Valley. 

 Guernsey. Alderney. Sark. Prance. 



8. P. AMPHIBIDM L. 



Native. Ponds, and fields on a clay soil. Frequent. July, 

 August. 



The floating form is abundant in the reservoirs in the 

 AVatervvorks Valley. The terrestrial form (var. tekrbstbe 

 Leers) is not uncommon on stiff soils, and a most troublesome 

 weed where it occurs. 

 Guernsey. Alderney. France. 



