Populus tremula
Aspen
Portulaca oleracea
Common Purslane
Potamogeton coloratus
Fen Pondweed
Potamogeton crispus
Curled Pondweed
Potamogeton lucens
Shining Pondweed
Potamogeton natans
Broad-leaved Pondweed
Potamogeton polygonifolius
Bog Pondweed
Potentilla anserina
Silverweed
Potentilla erecta
Tormentil
Potentilla indica
Yellow-flowered Strawberry
Potentilla reptans
Creeping Cinquefoil
Potentilla rupestris
Rock Cinquefoil
Potentilla sterilis
Barren Strawberry
Poterium sanguisorba
Salad Burnet
Premna serratifolia
Buas-Buas
Primula farinosa
Bird's-eye Primrose
Primula vulgaris
Primrose
Procris repens
Watermelon Begonia
Prosopis juliflora
Long-thorn Kiaw
Prunella vulgaris
Selfheal
Prunus avium
Wild Cherry
Prunus domestica
Bullace
Prunus padus
Bird Cherry
Pseuderanthemum maculatum
Ruspolia
Pseudofumaria alba
Pale Corydalis
Pseudorchis albida
Small-white Orchid
Pseudotsuga menziesii
Douglas Fir
Psidium guajava
Common Guava
Pteridium aquilinum
Bracken
Pterocarpus indicus
Amboyna Wood
Pterospermum diversifolium
Bayok Tree
Pulicaria dysenterica
Common Fleabane
Pulmonaria officinalis
Lungwort
Pyrola minor
Common Wintergreen
Pyrola rotundifolia
Round-leaved Wintergreen
Pyrus cordata
Plymouth Pear
Quercus cerris
Turkey Oak
Quercus petraea
Sessile Oak
Quercus robur
Pedunculate Oak
Quercus suber
Cork Oak
Quercus x rosacea
Radermachera yunnanensis
Ramonda myconi
Pyrenean-violet
Ranunculus acris
Meadow Buttercup
Ranunculus aquatilis
Common Water-crowfoot
Ranunculus auricomus
Goldilocks Buttercup
Ranunculus baudotii
Brackish Water-crowfoot
Ranunculus bulbosus
Bulbous Buttercup
Ranunculus flammula
Lesser Spearwort
Ranunculus fluitans
River Water-crowfoot
Ranunculus hederaceus
Ivy-leaved Crowfoot
Ranunculus lingua
Greater Spearwort
Ranunculus omiophyllus
Round-leaved Crowfoot
Ranunculus peltatus
Pond Water-crowfoot
Ranunculus sardous
Hairy Buttercup
Ranunculus sceleratus
Celery-leaved Buttercup
Ranunculus trichophyllus
Thread-leaved Water-crowfoot
Raphanus raphanistrum
Sea Radish
Raphanus sativus
Garden Radish
Reseda lutea
Wild Mignonette
Reseda luteola
Weld
Reynoutria japonica
Japanese Knotweed
Rhamnus cathartica
Buckthorn
Rhinanthus angustifolius
Greater Yellow-rattle
Rhinanthus minor
Yellow-rattle
Rhodiola rosea
Roseroot
Rhododendron lindleyi
Ribes rubrum
Red Currant
Ribes sanguineum
Flowering Currant
Ribes uva-crispa
Gooseberry