264 A IfEW FLOKA OF 



2. T. palustre, L. Native. Britisli type. Area C, N, D. 

 Range 1-3. 



Frequent in damp grassy places, ascending to 500 yards in 

 Teesdale, 600 yards in "West Allendale, 650 yards in Harwood 

 Dale. 



Order 10. FLUVIALES. 

 1. POTAMOGETON, L. 



1. P. densus, L. Native. English type. Area N, D. 



Eange 1. 



Pond at "Walker (F.) and near Howdon Pans (Jno. Storey!). 

 Ponds at ICebbnrn and in a spring at Manhaven near Marsden 

 (F. E.). In the Wear below Whitworth (Miss Wharton). In 

 the Skerne at Darlington (F.). 



2. P. peetinatiis, L. Native. British type. Area C, N, D. 



Eange 1. 



In the Tweed and "Wear, the Serpentine at Hardwick, Holy 

 Island Lough, Meggy's Burn near Blyth, and salt water ditches 

 at Hylton and the Tees mouth, and ascending to Crag Lough, 

 200 yards. 



3. P. pusillus, L. Native. British type. Area C, N, D. 



Eange 1. 



Frequent in ditches and slow streams, ascending to Kemmer 

 Lough near Eglingham, 200 yards (T.). A very slender-leaved 

 variety gathered by Professor Oliver near Dunstanbro'. 



4. P. gramineus, L. (P. compressum, Flora.) Native. Eng- 



lish type. Area C, N, D. Eange 1. 



Learmouth Bog near Cornhill (E. Embleton). Crag Lake, 

 200 yards, Prestwick Carr, and ponds at "Widehaugh near Dilston 

 (F. E !). Salt water ditches at Seaton Carew, and in a pond near 

 Darlington ("W. Backhouse. F!). 



