Prunus spinosa
Blackthorn
Pseudofumaria alba
Pale Corydalis
Pseudorchis albida
Small-white Orchid
Pyrola minor
Common Wintergreen
Pyrola rotundifolia
Round-leaved Wintergreen
Pyrus cordata
Plymouth Pear
Ranunculus aquatilis
Common Water-crowfoot
Ranunculus baudotii
Brackish Water-crowfoot
Ranunculus hederaceus
Ivy-leaved Crowfoot
Ranunculus omiophyllus
Round-leaved Crowfoot
Ranunculus peltatus
Pond Water-crowfoot
Ranunculus trichophyllus
Thread-leaved Water-crowfoot
Raphanus raphanistrum
Radish
Raphanus sativus
Garden Radish
Reseda lutea
Wild Mignonette
Reynoutria japonica
Japanese Knotweed
Rhododendron lindleyi
Rhynchospora alba
White Beak-sedge
Rosa arvensis
Field-rose
Rosa multiflora
Many-flowered Rose
Rosa rugosa
Japanese Rose
Rubus ariconiensis
Rubus biloensis
Rubus caesius
Dewberry