Paris quadrifolia
Herb-paris
Parnassia palustris
Grass-of-Parnassus
Passiflora caerulea
Blue Passionflower
Passiflora capsularis
Passion#Flower#(capsularis)
Pastinaca sativa
Wild Parsnip
Paulownia tomentosa
Foxglove-tree
Pedicularis foliosa
Leafy Lousewort
Pedicularis palustris
Marsh Lousewort
Pedicularis sylvatica
Lousewort
Pellia endiviifolia
Pellia spp.
Penstemon sp.
Penstemon
Pentaglottis sempervirens
Green Alkanet
Persicaria amphibia
Amphibious Bistort
Persicaria bistorta
Common Bistort
Persicaria hydropiper
Water-pepper
Persicaria maculosa
Redshank
Persicaria minor
Small Water-pepper
Persicaria vivipara
Alpine Bistort
Persicaria wallichii
Himalayan Knotweed
Petasites fragrans
Winter Heliotrope
Petasites hybridus
Butterbur
Petasites japonicus
Giant Butterbur
Petasites spurius
