NOETHUMBEELAKD AND DURHAM. 233 



3. P. farinosa, L. Native. Intermediate type. Ai-ea C, N, 

 D. Eange 1, 2. 



Rare iii Tyneland. In the "Wansbeck district near Nether- 

 witton (Sir W. C. Trevelyan). Bog near Chollerford Bridge, 

 and near a mineral well at Spital near Ovingham (F. E !). 

 Frequent about the springs that issue from the Magnesian Lime- 

 stone, as at Easington, Pensher, Hylton, Perryhill, East Murton, 

 Dalton-le-Dale, and Castle Eden. On the sea-banks between 

 Ryhope and Seaham. In the Derwent district at Eollingsby, 

 and between Muggleswick Priory and the river, and by the 

 Hyslop Burn near Camefield House. In the south-east tract 

 at Stainton and IN'orton. Frequent in "VVeardale and Teesdale, 

 ascending to the Widdy Bank plateau, 550 yards. 



2. TRIENTALIS, L. 



1. T. ewopcea, L. iN'ative. Scottish type. Area C, 'N, J). 

 Range 1, 2. 



Widely scattered in the hilly tracts. Amongst the Cheviots 

 on Hedgehope, between Broadstruther and Goldscleugh, and near 

 the Middleton Hall shepherd's house. Frequent on the sandstone 

 range from Chillingham and Twizell southward to Alnwick, de- 

 scending to the Brislee Hill in Alnwick Park, 150 yards, and 

 near Rugley to 200 feet (T.). Amongst the Coquet moors above 

 Rothbury and Harbottle, in the Wansbeck tract at Catcherside, 

 Green Leighton, and by Rothley Lake, and in Tynedale along 

 the Roman Wall. In woods at the Sneep above Shotley Bridge 

 (G. S. Brady). In Durham in Shull Woods (Professor Oliver), 

 and near Butsfield, Spring Houses, and Waskerley (J. Thorn- 

 hill). Ascends to 500 yards. 



3. HOTTONIA, L. 



1. H. palustr is, Jj. jSTative. English type. AreaD. Range 1. 



Plentiful in Morden Carr, and occurring in ponds in several 

 places about Stockton, Darlington, and Durham, and recorded 

 from a pond at East Boldon near Sunderland, these two last 

 apparently its most northern stations. 



