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
Petrorhagia prolifera
Proliferous Pink
Phacelia tanacetifolia
Phacelia
Phalaris arundinacea
Reed Canary-grass
Phalaris canariensis
Canary-grass
Phegopteris connectilis
Beech Fern
Phellinus ferreus
Cinnamon Porecrust
Phellinus igniarius
Philadelphus
Double Mock-orange
Philadelphus coronarius
Mock-orange
Phleum arenarium
Sand Cat's-tail
Phleum pratense
Timothy
Pholiota squarrosa
Shaggy Scalycap
Phragmidium sp.
Phragmites australis
Common Reed