Oxybasis glauca
Oak-leaved Goosefoot
Pachira glabra
French Peanut
Palhinhaea cernua
Staghorn Clubmoss
Pandanus tectorius
Thatch Screwpine
Panicum trichanthum
Thicket Panic Grass
Papaver cambricum
Welsh Poppy
Paris quadrifolia
Herb-paris
Passiflora foetida
Stinking Passionflower
Pedicularis palustris
Marsh Lousewort
Pedicularis sylvatica
Lousewort
Pelargonium zonale
Zonal Geranium
Pentas lanceolata
Egyptian Starcluster
Peperomia pellucida
Pepper Elder
Peperomia polybotrya
Raindrop Peperomia
Pereskia aculeata
Barbados Gooseberry
Persicaria amphibia
Amphibious Bistort
Persicaria chinensis
Creeping Smartweed
Persicaria lapathifolia
Pale Persicaria
Petasites hybridus
Butterbur
Petasites pyrenaicus
Winter Heliotrope
Petasites spurius
Petrorhagia prolifera
Proliferous Pink
Petrosedum forsterianum
Rock Stonecrop
Petrosedum rupestre
Reflexed Stonecrop