Orchis simia
Monkey Orchid
Oreopteris limbosperma
Lemon-scented Fern
Ornithogalum nutans
Drooping Star-of-Bethlehem
Ornithogalum pyrenaicum
Spiked Star-of-Bethlehem
Ornithogalum umbellatum
Star-of-Bethlehem
Ornithopus perpusillus
Bird's-foot
Orobanche caryophyllacea
Bedstraw Broomrape
Orobanche hederae
Ivy Broomrape
Orobanche minor
Common Broomrape
Orobanche rapum-genistae
Greater Broomrape
Osmunda regalis
Royal Fern
Oxalis acetosella
Wood-sorrel
Oxalis incarnata
Pale Pink-sorrel
Oxybasis rubra
Red Goosefoot
Palhinhaea cernua
Staghorn Clubmoss
Panaeolus papilionaceus
Petticoat Mottlegill
Pancratium maritimum
Sea Daffodil
Panicum trichanthum
Thicket Panic Grass
Papaver cambricum
Welsh Poppy
Papaver lecoqii
Yellow-juiced Poppy
Papaver rhoeas
Common Poppy
Pararge aegeria
Speckled Wood
Parentucellia viscosa
Yellow Bartsia
Parietaria judaica
Pellitory-of-the-wall
Paris quadrifolia
Herb-paris
Parnassia palustris
Grass-of-Parnassus
Passiflora capsularis
Passion#Flower#(capsularis)
Passiflora foetida
Stinking Passionflower
Pastinaca sativa
Wild Parsnip
Paulownia tomentosa
Foxglove-tree
Pedicularis palustris
Marsh Lousewort
Pedicularis sylvatica
Lousewort
Pentaglottis sempervirens
Green Alkanet
Persicaria amphibia
Amphibious Bistort
Persicaria chinensis
Creeping Smartweed
Persicaria lapathifolia
Pale Persicaria
Persicaria maculosa
Redshank
Persicaria minor
Small Water-pepper
Persicaria mitis
Tasteless Water-pepper
Petasites hybridus
Butterbur
Petasites japonicus
Giant Butterbur
Petasites pyrenaicus
Winter Heliotrope
Petrosedum forsterianum
Rock Stonecrop
Petrosedum rupestre
Reflexed Stonecrop
Petroselinum crispum
Garden Parsley
Peziza spp.
Phalaenopsis amabilis
Moon Orchid
Phalaris arundinacea
Reed Canary-grass
Phalaris canariensis
Canary-grass
Phalera bucephala
Buff-tip Moth
Phanera kockiana
Orange Bauhinia
Phegopteris connectilis
Beech Fern
Phleum pratense
Timothy
Phragmites australis
Common Reed
Phuopsis stylosa
Caucasian Crosswort
Phymatosorus scolopendria
Monarch Fern
Physcia aipolia
Picris hieracioides
Hawkweed Oxtongue
Pilosella aurantiaca
Fox-and-cubs
Pilosella officinarum
Mouse-ear-hawkweed
Pilularia globulifera
Pillwort
Pimpinella saxifraga
Burnet-saxifrage
Pinguicula grandiflora
Large-flowered Butterwort
Pinguicula lusitanica
Pale Butterwort
Pinguicula vulgaris
Common Butterwort
Pinus sylvestris
Scots Pine
Piptoporus betulinus
Birch Polypore
Plantago coronopus
Buck's-horn Plantain
Plantago lanceolata
Ribwort Plantain
Plantago maritima
Sea Plantain