Rubia peregrina
Wild Madder
Ruscus aculeatus
Butcher's-broom
Sambucus ebulus
Dwarf Elder
Sanicula europaea
Sanicle
Saxifraga granulata
Meadow Saxifrage
Saxifraga paniculata
Livelong Saxifrage
Sicyos edulis
Chayote
Silaum silaus
Pepper-saxifrage
Silene gallica
Small-flowered Catchfly
Silene nutans
Nottingham Catchfly
Solandra grandiflora
Showy Chalicevine
Sorbus aucuparia
Rowan
Spartina anglica
Common Cord-grass
Spiranthes romanzoffiana
Irish Lady's-tresses
Spiranthes spiralis
Autumn Lady's-tresses
Symphytum orientale
White Comfrey
Synedrella nodiflora
Nodeweed
Teucrium scorodonia
Wood Sage
Thalictrum minus
Lesser Meadow-rue
Torilis nodosa
Knotted Hedge-parsley
Trifolium ochroleucon
Sulphur Clover
Trinia glauca
Honewort
Umbilicus rupestris
Navelwort
Vaccinium vitis-idaea
Cowberry