Parnassia palustris
Grass-of-Parnassus
Pastinaca sativa
Wild Parsnip
Paulownia tomentosa
Foxglove-tree
Pentaglottis sempervirens
Green Alkanet
Persicaria amphibia
Amphibious Bistort
Persicaria lapathifolia
Pale Persicaria
Persicaria maculosa
Redshank
Persicaria minor
Small Water-pepper
Persicaria mitis
Tasteless Water-pepper
Petasites pyrenaicus
Winter Heliotrope
Petrosedum forsterianum
Rock Stonecrop
Phacelia tanacetifolia
Phacelia
Phalaris arundinacea
Reed Canary-grass
Phegopteris connectilis
Beech Fern
Philadelphus coronarius
Mock-orange
Phuopsis stylosa
Caucasian Crosswort
Physalis peruviana
Cape-gooseberry
Picris hieracioides
Hawkweed Oxtongue
Pilosella aurantiaca
Fox-and-cubs
Pilosella officinarum
Mouse-ear-hawkweed
Pilularia globulifera
Pillwort
Pimpinella saxifraga
Burnet-saxifrage
Plantago lanceolata
Ribwort Plantain
Platanus x hispanica
London Plane
Polygala serpyllifolia
Heath Milkwort
Polygala vulgaris
Common Milkwort
Polygonatum verticillatum
Whorled Solomon's-seal
Polygonum arenastrum
Equal-leaved Knotgrass
Polygonum aviculare
Knotgrass
Polygonum oxyspermum
Ray's Knotgrass
Portulaca oleracea
Common Purslane
Potamogeton lucens
Shining Pondweed
Potamogeton polygonifolius
Bog Pondweed
Potentilla reptans
Creeping Cinquefoil
Potentilla rupestris
Rock Cinquefoil
Potentilla sterilis
Barren Strawberry
Primula elatior
Oxlip
Primula farinosa
Bird's-eye Primrose
Primula x polyantha
False Oxlip
Prunella vulgaris
Selfheal
Prunus domestica
Wild Plum
Prunus padus
Bird Cherry
Prunus spinosa
Blackthorn
Pseudorchis albida
Small-white Orchid
Pseudotsuga menziesii
Douglas Fir
Pulicaria dysenterica
Common Fleabane
Pyrola minor
Common Wintergreen
Pyrola rotundifolia
Round-leaved Wintergreen
Quercus suber
Cork Oak
Ramonda myconi
Pyrenean-violet
Ranunculus acris
Meadow Buttercup
Ranunculus aquatilis
Common Water-crowfoot
Ranunculus auricomus
Goldilocks Buttercup
Ranunculus bulbosus
Bulbous Buttercup
Ranunculus flammula
Lesser Spearwort
Ranunculus fluitans
River Water-crowfoot
Ranunculus lingua
Greater Spearwort
Ranunculus parviflorus
Small-flowered Buttercup
Ranunculus sceleratus
Celery-leaved Buttercup
Raphanus raphanistrum
Radish
Raphanus sativus
Garden Radish
Reseda lutea
Wild Mignonette
Reseda luteola
Weld
Reynoutria japonica
Japanese Knotweed
Rhinanthus minor
Yellow-rattle
Rhipsalis salicornioides
Spice Cactus
Rhodiola rosea
Roseroot
Ribes rubrum
Red Currant
Ribes uva-crispa
Gooseberry
Rorippa sylvestris
Creeping Yellow-cress