NORTHUMBERLAND AND DURHAM. 167 



7. E. obscurum, Sehreb. JS'ative. Britisli type. Area C, ]^, 



D. Range 1, 2. 



Frequent in ditches and swamps, ascending on Cheviot to 

 550 yards, and nearly as high on the moors at the head of East 

 Allendale. We have not seen the true ^. tetragonum within the 

 province. 



8. E. anagallidifolium, Lam. ^Native. Highland type. Area 



C, D. 



On Cheviot near the top of Henhole and Groldscleugh (Dr. F. 

 Douglas. T.). In Teesdale on the moor near the Caldron Snout 

 (Sir W. C. Trevelyan. F !). Probable altitude 500-600 yards. 



9. E. alsinifolium, Vill. Native. Highland type. Area C, D. 



Abundant in all the high Cheviot sykes. In the Wear district 

 in the streams that issue from the Main Limestone in "Welhope, 

 and in the Tees district sparingly on Highfield above Grasshill. 

 Range of altitude 500-850 yards. 



2. cmc^A, L. 



1. C. lutetiana^ L. Illative. British type. Area C, iN", D. 

 Range 1. 



Frequent in woods, ascending in [N'orth Tynedale to Tecket 

 and Hareshaw Denes, 200 yards. We have not seen the true 

 C. alfina from the province. Winch's specimen thus named is 

 C. lutetiana only, but C. intermeMa^ Ehrh., was gathered by Mr. 

 Storey near Ryton. 



Oedee 6. HALORAGACE^. 



1. HIPPURIS, L. 



1. II. vulgaris^ L. Native. British type. Area C, N, D. 

 Range 1. 



Ponds and slow streams, not unfrequent. Near Lucker and 

 in Learmouth Bog (T.). Newham Bog (R. Embleton). Ditch 

 above Fleatham Bridge (W. Richardson). In the Reed Water 



