208 FLORA OF THE LAKE DISTRICT. 



W. In Angle Tarn, Place Fell, 1550 feet. — (Borrer.) 

 Windermere, abundant about the Ferry and elsewhere ; first 

 recorded by Borrer. Very abundant in Rydal Water. — (J. C. 

 Melvill.) At the north end of Grasmere.— (F. C. Roper.) 



L. At the north end of Coniston Lake near Waterhead. 

 -(B.) 



1 129. Pota?nogeton heterophyllus, Schreb. Native. British 

 type. Range 1. Plentiful in Ullswater, Rydal Water, and 

 Windermere, and in the reservoir of Workington water-works. 



Var. Zizii has been gathered by C. Bailey at the north end 

 of Derwentwater and of Coniston Water. P. lanceolatus is 

 reported by Mr. Cooke from Bassenthwaite, but the naming 

 will need verifying. 



1 131. Potamogeton rufescens, Schrad. Native. British 

 type. Range 1. 



C. Calder Ghylls, Ponsonby. — (J. Robson.) Derwent- 

 water. — (C. Bailey.) Dubstangs, and in the dam at Dubmill, 

 Allonby. — (W. Hodgson.) 



1 132. Potamogeton natans, L. Native. British type. 

 Range 1-2. Ponds in the low country, up to the lower tarn 

 at Watendlath, 250 yards. At double this altitude, towards 

 the source of Airey Beck, over Dowthwaite Head. — (W. 

 Hodgson.) 



1 132*. Potamogeton polygonifolius, Pourr. Native. British 

 type. Range 1-2. Common in tarns and swamps ; ascend- 

 ing to 600 yards on Haystacks, and 500 yards at Hayes Tarn 

 and Angle Tarn. 



Var. pseudo-fluitans (Syme) has been gathered by the Rev. 

 F. J. A. Hort and Professor Oliver at Buttermere, and in 

 Stony Tarn near Wastwater by the Rev. A. Ley. 



