296 The Floval List. 
PHYLLITIS SCOLOPENDRIUM, Newm. 1856, Bogg. —2, 5, 6, 7, 9, 14, 16, 
17, 18. 
PILULARIA GLOBULIFERA, L. tr910, Reobuck. +2. 
PIMPINELLA MAJOR, Huds. 1780, Sibthorp. —4, 9, 17, 18. 
PIMPINELLA SAXIFRAGA, L. 1851, Watson. —12, 17, 18. 
PLANTAGO ARENARIA, W.& K. 1897, Sneath. +4, 6, 13. 
PLANTAGO MARITIMA, L, 1780, Sibthorp. +2, 4, 9, 11, 12, 17, 18. 
POA SUBCERULEA, Sm. 1896, L.N.U. +5,9. 
POLEMONIUM C/ERULEUM, L. 1780, Sibthorp. +2, 8,9, 11, 15. 
POLYGALA CALCARIA, F. Schultz. 1908, Mason. +2. 
POLYGONATUM MULTIFLORUM, All. 1856, Bogg. +7, 14. 
POLYGONUM AVICULARE, L. v. RURIVAGUM, Jord. 1895, Stow. +2, 3, 
10, II, 13, 14, 15. 
POLYGONUM HYDROPIPER, L. 1851, Watson. —4, 9, 12, 16, 17, 18. 
POLYGONUM LAPATHIFOLIUM, L. 1851, Watson. —1, 6, 18. 
POLYGONUM MINUS, Huds. tg11, Druce. +18. 
POLYGONUM MITE, Schrank. 1911, Druce. +418. 
POLYSTICHUM ACULEATUM, Roth. v. LOBATUM, Presl. +1, 4, 8, 11. 
POPULUS ALBA, L. 1841, Stark. —1, 4, 8,9, 12, 14, 17, 18. 
POPULUS DELTOIDES, Marsh. v. SEROTINA, Hartig. 1911, Druce. +18. 
POPULUS MARILANDICA, Moench. 1911, Druce. +16. 
POPULUS TREMULA, L. 1851, Watson. —1, 4, 6, 9, 14, 15, 17. 
POTAMOGETON ALPINUS, Balb. 1804, Brit. Mus. Herb. +4, 7, 8, 9, 13, 
14. 
POTAMOGETON COLORATUS, Hornem. 1804, Banks. +2, 3, 12, 16. 
POTAMOGETON CRISPUS, L. v. SERRATUS, Huds. 1780, Sibthorp. 
+15.? 
POTAMOGETON FRIESII, Rupr. 1780, Sibthorp. +4, 8, 9, 12, 14, 18. 
POTAMOGETON HETEROPHYLLUS, 1780, Sibthorp. +1, 3, 12, 13, 14, 16. 
POTAMOGETON NATANS, L. 1780, Sibthorp. -—6, to, 17. 
POTAMOGETON OBTUSIFOLIUS, Mert. & Koch. 1849, Carrington. +4, 5, 
9, 13, 18. 
POTAMOGETON PUSILLUS, L. 1780, Sibthorp. —2, 5, 6, 13, 17, 18. 
POTENTILLA STERILIS, Garcke. 1855, Bogg. —3, 6,9, 12, 17, 18. 
PRIMULA ACAULIS, L. =P. VULGARIS, Huds. 
([PRIMULA ELATIOR, Jacq. 1906. A mistake.] 
