168 A NEW FLOKA OF 



below Otterburn, 150 yards (Professor Oliver and Brown.) In 

 the Blyth below Bedlington (W. H. Brown). Prestwick Carr 

 (F. R !). Hell Kettles near Croft (B.). In the Skerne at Dar- 

 lington (W. Backhouse). In the stalls about JS'orton (J. Hogg). 



2. MYKIOPHYLLUM, L. 



1. M. verticillatum, L. Native. English type. Area N, D. 



Range 1. ^ 



In a pond at Walker near Newcastle (E. B. Bowman. A.). 

 In a pond at Polam near Darlington (W. Backhouse. F.). 



2. M. spicatum, L. Native. British type. Area C, N, D. 



Ptange 1. 



Frequent in ditches and slow streams, ascending Coquetdale to 

 Rothbury, 150 yards. 



3. M. alterniflorum, D. C. Native. British type. Area C, 



N. Range 1. 



Heathy ponds. Shipley near Alnwick (John Storey !). Prest- 

 wick Carr and Crag Lake, 250 yards (R!). In the Chirdon 

 Burn near Bellingham (W. H. Brown!) Easily passed over as 

 the preceding. 



3. CERATOPHYLLUM, L. 



• 1. C. demersum, Jj. Native. English type. AreaD. Range 1. 

 Ditches on Durham Moor (Rev. J. Symons. F.). 



4. CALLITRICHE, L. 



1. C. verna, L. Native. British type. Area C, N, D. 



Range 1, 2. 

 Everywhere common in ditches and ponds, ascending to 500 

 yards in Allendale. 



2. C. platycarpa, Kutz. Native. British type. Area C, N, 



D. Range 1, 2. 



Frequent in swamps and on the edges of ponds, ascending to 

 1700 feet in West Allendale. 



