118 THE FLORA OF DERBYSHIRE. 



III. Drakelowe, Harris ; canal, Spondon! Swarkestone, 

 Bloxam ! Melbourne Pool, Purchas, J. B. 



1124. Potamogeton crispus, L. Native. British type. 

 Eange 1-2. 



I. Reservoirs, Oomford ; Dove Dale, B. and N., J. B.\ 

 above Dove Dale ! Thorpe, Linton. 



III. About Burton -on -Trent, Harris\ Locko Park! 

 Kepton, Hagger; Hulland, Smith MSS.; near Shirley Mill, 

 Linton; Calke, Purchas, J. B. 



1125. Potamogeton perfoliatus, L. Native. British 

 type. Eange 1-2. 



I. Canal at Whatstandwell, B. and N., J. B. 



II. About Chesterfield, Waterfall. 



III. Canal at Spondon ! About Burton-on-Trent, Harris. 



1326. Potamogeton lucens, L. Native. English type. 

 Eange 1. 



III. " This is one of the segregates." Near Calke Abbey, 

 Bloxam ! ' ' The specimen is too imperfect to allow of certainty. 

 I did not myself meet with it," Purchas, J. B. 



1131. Potamogeton rufescens, Schrad. Native. British 

 type. Eange 1. 



III. Found by Mr. Bloxam ! in one of the Calke ponds, 

 Archer's Pool, Purchas, J. B. 



1132. Potamogeton natans, L. Native. British type. 

 Eange 1-2-3. 



I. Whatstandwell, B. and N., J. B.; ponds up to 400 

 yards, Baker, J. B.; in a pond near the Ashbourne and 

 Buxton Eoad, four miles from Ashbourne, Purchas, J. B. 



II. About Chesterfield, Waterfall. 



III. Common about Derby ! Archer's Pond, Purchas, 

 J. B.; Bradley, Linton. 



1132.* Potamogeton polygonifolius, Pourr. Native. 

 British type. Eange 1-2. 



I. Eills on Tansley Common, B. and N., J. B. 



III. A specimen of Mr. Bloxam's named "natans" is 

 clearly this species. The bog at Eepton Eocks would seem 

 to be the most likely locality, Purchas, J. B. 



Potamogeton heterophyllus, Schreb. 

 E. Trent, Nat. Hist. Tutbury, 



Potamogeton lanceolatus, Sm. in pt. 

 Derby, " Gem of the Peak." 



Potamogeton fili/oi mis, Nolte . 



Eecorded in J. B., 1881, p. 296, as "rare, near Ashbourne," 

 Smith, is an error ; it is P. pectinatus, L., Ibid., p. 374. 



