FIEST KECORDS OF BRITISH FLOWERING PLANTS. 85 



P. Lonchites Tuckerm. in Am. Journ. Sc. Ser. 2, vi. 226 

 (1848). 1869. " In the river Boyne below Navan. Mr. D. Moore." 

 — Syme, E. B. ix. 33 ; but I am informed by Mr. Arthur Bennett 

 that the Irish plant is a form of ^^ [iramineus L.," i.e., graminifolius 

 Fries. 



P. lanceolatus Sm. E. B. 1985 (1809). 1809. " Communi- 

 cated by the Rev. H. Davies [Aug. 1808] from the lakes of North 

 Wales."— E. B. l.v. 



P. heterophyllus Hchrob. Spicil. Fl. Lips. 21 (1771). 1798. 

 "Ditches near Beverley" (Yorkshire). — Mr, Teesdale in Linn. 

 Trans, v. 48 ("P. palustre"). 



P. nitens Web. Fl. Holsat. Suppl. n. 11 (1787). 1864. Dis- 

 covered by D. Moore "in a large lake at Castle Gregory, near 

 Brandon Mountain, Co. Kerry" (1864).— Journ. Bot. 1864, 326. 



P. lucens L. Sp. PI. 126 (1753). 1633. " Potamogeiton 

 lougis acutis foliis." — Ger. em. 822, 4. "In Thames between 

 Fulham & Hampton Court." — Petiver in Gibson's Camden (1695). 



P. decipiens Nolte ex Koch, Syn. Fl. Germ. ed. 2, 779 (1844). 

 1867. Found in the canal at Bath by Mrs. Hopkins.— Bot. Exch. 

 Club Report, 1866, 13 ; and Journ. Bot. 1867, 71. 



P. Zizii Koch ex Eoth, Enum. PI. Germ. i. 531 (1827). 1879. 

 Found in Cauldshields Loch, near Melrose, N.B., by Mr. A. 

 Brotherston.— Bot. Exch. Club Report, lS78, 19 (1879); and 

 Journ. Bot. 1879, 252. 



P. coriaceus Fryer in Journ. Bot. 1889, 8. P. lucens coriaceus 

 Nolte in Roehl. Deutschl. Fl. i. 850 (1823). 1886. " Last year 

 Mr. A. Fryer sent specimens from Cambridgeshire." — Arthur 

 Bennett in Journ. Bot. 1886, 223. 



P. salicifolius Wolfg. in Schult. Mant. iii. 355 (1827). 1877. 

 Found by Rev. Augustin Ley, in 1866, in the Wye, Sellack, Here- 

 fordshire.— See Bot. Exch. Club Report, 1877, p. 10. The P. 

 salicifolius of Bab. Man. ed. 7, 372, is not this species. 



P. GrifRthii Ar. Benn. in Journ. Bot. 1883, 65. 1883. 

 Discovered by Mr. J. E. Griffith in Aber Lake, Carnarvonshire, 

 June, 1882. — Journ. Bot. I. c. 



P. prselongus Wulf. in Roem. Arch. iii. 331 (1805). 1835. 

 "Lakes and pools, Berwickshire, Dr. Robt. Thomson. Moss of 

 Litie, Nairnshire, Mr. J. B. Brechan [Brichan] ." — Hook. Fl. Brit, 

 ed. 3, 77. Mr. Brichan found it in 1832 : see Phyt. i. 237. 



P. perfoliatum L. Sp. PI. 126 (1753). 1633. "P. tertium 

 Dodoniei."— Ger. em. 822, 3; and Johns. Merc. Bot. 61 (1634). 



P. crispum L. Sp. PI. 126 (1753). 1632. " Pusillum fonti- 

 lapathum, Lob." — Johns. Kent (1632), 30. 



P. densum L. Sp. PL 126 (1753). 1633. "In the river by 

 Droxford in Hampshire." — Goodyer in Ger. em. 824, 3, 



P. zostersefolius Schum. Enum. PI. Saell. i. 50 (1801). 1794. 

 "In a rivulet at Hovingham " (Yorkshire). — R. Teesdale in Linn. 

 Trans, ii. 106 (P. compression). 



P. acutifolius Link in Roem. et Sch. Syst. iii. 513 (1818). 

 1829. "Found ... by Mr. Borrer ... at Ambeiiey, Henheld, 

 and Lewes, Sussex, in June, 1826." — E. B, S. 2609. 



