Petrosedum forsterianum
Rock Stonecrop
Phalaris arundinacea
Reed Canary-grass
Phegopteris connectilis
Beech Fern
Phleum arenarium
Sand Cat's-tail
Phleum bertolonii
Smaller Cat's-tail
Phragmites australis
Common Reed
Picea sitchensis
Sitka Spruce
Picea smithiana
Morinda Spruce
Picris hieracioides
Hawkweed Oxtongue
Pilosella officinarum
Mouse-ear-hawkweed
Pilularia globulifera
Pillwort
Pimpinella saxifraga
Burnet-saxifrage
Pinguicula lusitanica
Pale Butterwort
Pinguicula vulgaris
Common Butterwort
Pinus sylvestris
Scots Pine
Plantago coronopus
Buck's-horn Plantain
Plantago lanceolata
Ribwort Plantain
Plantago major
Greater Plantain (subspecies intermedia)
Plantago maritima
Sea Plantain
Platanthera chlorantha
Greater Butterfly-orchid
Platanthera chlorantha and bifolia
Platanus orientalis
Oriental Plane
Platanus x hispanica
London Plane
Polemonium pauciflorum