Oenanthe silaifolia
Narrow-leaved Water-dropwort
Olearia macrodonta
New Zealand Holly
Ornithogalum umbellatum
Star-of-Bethlehem
Ornithopus perpusillus
Bird's-foot
Oxalis acetosella
Wood-sorrel
Oxalis incarnata
Pale Pink-sorrel
Parnassia palustris
Grass-of-Parnassus
Passiflora caerulea
Blue Passionflower
Pedicularis sylvatica
Lousewort
Persicaria amphibia
Amphibious Bistort
Persicaria hydropiper
Water-pepper
Petasites pyrenaicus
Winter Heliotrope
Philadelphus
Double Mock-orange
Pieris japonica
Pimpinella saxifraga
Burnet-saxifrage
Pinguicula lusitanica
Pale Butterwort
Plantago media
Hoary Plantain
Platanthera bifolia
Lesser Butterfly-orchid
Platanthera chlorantha
Greater Butterfly-orchid
Plumeria obtusa
Frangipani
Polygala vulgaris
Common Milkwort
Polygonatum odoratum
Angular Solomon's-seal
Polygonatum verticillatum
Whorled Solomon's-seal
Polygonatum x hybridum
Garden Solomon's-seal