Quercus rubra
Red Oak
Quercus suber
Cork Oak
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 parviflorus
Small-flowered Buttercup
Ranunculus peltatus
Pond Water-crowfoot
Ranunculus repens
Creeping Buttercup
Ranunculus sardous
Hairy Buttercup
Ranunculus sceleratus
Celery-leaved Buttercup
Ranunculus trichophyllus
Thread-leaved Water-crowfoot
Raphanus raphanistrum
Radish
Reseda lutea
Wild Mignonette
Reseda luteola
Weld
Reynoutria japonica
Japanese Knotweed
Rhamnus cathartica
Buckthorn