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 sceleratus
Celery-leaved Buttercup
Ranunculus trichophyllus
Thread-leaved Water-crowfoot
Raphanus raphanistrum
Radish
Rhamnus cathartica
Buckthorn
Rhinanthus minor
Yellow-rattle
Rhodiola rosea
Roseroot
Rhynchospora alba
White Beak-sedge
Rhynchospora fusca
Brown Beak-sedge
Romulea columnae
Sand Crocus
Rorippa islandica
Northern Yellow-cress
Rorippa palustris
Marsh Yellow-cress
Rorippa sylvestris
Creeping Yellow-cress
Rosa arvensis
Field-rose
Rosa canina
Dog-rose
Rosa canina agg
Dog-rose
Rosa rubiginosa
Sweet-briar
Rosa sherardii
Sherard's Downy-rose
Rosa spinosissima
Burnet Rose
Rosa stylosa
Short-styled Field-rose
Rubia peregrina
Wild Madder
Rubus ariconiensis
Rubus caesius
Dewberry
Rubus dasyphyllus
Rubus fruticosus agg.
Blackberry
Rubus fuscicortex
Rubus idaeus
Raspberry
Rubus incurvatus
Rubus iscanus
Rubus nemoralis
Rubus nessensis
Rubus ordovicum
Rubus pedemontanus
Rubus saxatilis
Stone Bramble
Rubus scissus
Rubus tuberculatus
Rubus ulmifolius
Elmleaf Blackberry
Rubus vestitus
Rumex acetosa
Common Sorrel
Rumex acetosella
Sheep's Sorrel
Rumex crispus
Curled Dock
Rumex hydrolapathum
Water Dock
Rumex maritimus
Golden Dock
Rumex obtusifolius
Broad-leaved Dock
Rumex palustris
Marsh Dock
Rumex pulcher
Fiddle Dock
Rumex rupestris
Shore Dock
Rumex sanguineus
Wood Dock
Ruppia maritima
Beaked Tasselweed
Ruscus aculeatus
Butcher's-broom
Sabulina verna
Spring Sandwort
Sagina apetala
Annual Pearlwort
Sagina filicaulis
Slender Pearlwort
Sagina nodosa
Knotted Pearlwort
Sagina procumbens
Procumbent Pearlwort
Sagittaria sagittifolia
Arrowhead
Salicornia dolichostachya
Long-spiked Glasswort
Salicornia emerici
Shiny Glasswort
Salicornia europaea
Common Glasswort
Salicornia fragilis
Yellow Glasswort
Salicornia ramosissima
Purple Glasswort