58 THE FLORA OF STAFFORDSHIRP:. 



Potamogeton natans L. Common ! Gam. 349. (1) Bid- 

 dulpli Common, 900 ft., Painter. (3) Knypersley Park, Painter ; 

 Cliillingtou, Fraser ; Gnosall ; Hopton Pool ; Hayhead, &c. (4) 

 Foucher's Pool ; Perton Reservoir, &c. 



P. polygonifolius Pourr. (2) Small pool near Oakamore. 



(3) Cannock Chase ! Brown, 284 ; Codsall ! Stafford ! Hopton 

 Pool ; Canwell. 



P. alpinus Balb. (1) Pond, Biddulph Valley, Painter. (3) 

 Canal-feeder below Knypersley Mill, Painter. (4) Trysull, Fraser. 



P. heterophyllus Schreb. (4) Forton Pool, Gam. 350. 



P. lucens L. Common ! Gam. 349. (3) Near Stafford, 

 Dour/las ; common in the Trent ! Brown, 289 ; canal, Fradley ; 

 Trent, near Armitage. (4) Pool Hill Pool, Fraser ; Perton Reservoir. 



P. prselongus Wulf. (3) Near Burton, Brown, 290 ; near 

 Stafford, Douglas sp. Top. Bot. 418. 



P. perfoliatus L. Common ! Gam. 349. Common, canals 

 and River Trent. 



P. crispus L. (3) Canals at Stoke ; Trentham Pool ! Gam. 

 350 ; near Stafford, Douglas ; canals, Fradley ; Cohvich, lugestre ; 

 frequent in Trent ; Gailey, &c. (4) Near Swindon ; Foucher's 

 Pool, &c. 



b. serratus Huds. (3) Near Croxall ; near Alrewas. 



P. densus L. Common ? Gam. 349. (2) Near Mayfield (the 

 only locality in which I have seen it). 



P. zosteraefolius Schum. P. compressum L. (3) Canals at 

 Stoke, Gam. 349 ; Trent at Barton, Brown, 290 ; near Stafford, 

 Douglas ; canal, Fradley ; reservoir, Gailey ; streams near Barton 

 Railway- station. (4) Blymhill Lawn, in the second pool, Shaw, 

 ii. 11. 



P. obtusifoliusMert.&Koch. (3) Knypersley Pools, Pamffe-/-, 95. 



P. Friesii Rupr. (3) Canal, Fradley. 



P. pusillus L. (2) Rolleston Ponds, Brown, 290. (3) Kny- 

 persley Pool, Miss Thompson ; near Wolverhampton ; Rough Hill, 

 Fraser ; canal, Gnosall ; canal, Fradley. 



P. trichoides Cham. (3) Pendeford ? Fraser. 



P. pectinatus L. (2) Rudyard Reservoir, Painter. (3) In 

 canals, Stoke, Gam. 349; linyi:)evsley Fool, Miss Thompson; canals, 

 Weston ; Milford, Colwich ; Fradley ; Great Barr, &c. (4) Forton 

 Moors, Shaw, 111. 



P. interruptus Kit. (3) Stafford, Fraser ; Trent at Burton, 

 Brown, 290 ; canals, Great Hey wood ; Weston-on-Stour; Hayhead. 



(4) Near Stewponey I Fraser. 



P. filiformis Nolte. (3) Copmere Pool, N. S. S. Rep. 94. 



Zannichellia palustris L. (3) On the stream at Stretton, 

 and in the river at Tamworth, Gam. 405; near Stafford! Douglas; 

 near Burton, Brown. (4) Staffordshire canals near the Stone 

 bridge at Ketley ; near Kingswinford, F. A. Lees. 



