Salpichroa origanifolia
Cock's-eggs
Salsola kali
Prickly Saltwort
Salvia pratensis
Meadow Clary
Sambucus ebulus
Dwarf Elder
Sanicula europaea
Sanicle
Saponaria officinalis
Soapwort
Saxifraga granulata
Meadow Saxifrage
Saxifraga hypnoides
Mossy Saxifrage
Saxifraga oppositifolia
Purple Saxifrage
Saxifraga rosacea
Irish Saxifrage
Saxifraga spathularis
St Patrick's-cabbage
Scabiosa columbaria
Small Scabious
Scilla verna
Spring Squill
Scleranthus annuus
Annual Knawel
Scleranthus perennis
Perennial Knawel
Scrophularia auriculata
Water Figwort
Scrophularia nodosa
Common Figwort
Sedum anglicum
English Stonecrop
Serratula tinctoria
Saw-wort
Sibthorpia europaea
Cornish Moneywort
Sicyos edulis
Chayote
Silaum silaus
Pepper-saxifrage
Silene conica
Sand Catchfly
Silene dioica
Red Campion
Silene flos-cuculi
Ragged-Robin
Silene noctiflora
Night-flowering Catchfly
Silene nutans
Nottingham Catchfly
Silene viscaria
Sticky Catchfly
Sinapis arvensis
Charlock
Sisymbrium officinale
Hedge Mustard
Smyrnium perfoliatum
Perfoliate Alexanders
Solandra grandiflora
Showy Chalicevine
Solanum dulcamara
Bittersweet
Solanum melongena
Eggplant
Sorbus aucuparia
Rowan
Spartina anglica
Common Cord-grass
Spergula arvensis
Corn Spurrey
Stachys germanica
Downy Woundwort
Staphylea pinnata
Bladdernut
Stellaria alsine
Bog Stitchwort
Stellaria aquatica
Water Chickweed
Stellaria graminea
Lesser Stitchwort
Stellaria holostea
Greater Stitchwort
Stellaria neglecta
Greater Chickweed
Succisa pratensis
Devil's-bit Scabious
Tamus communis
Black Bryony
Teesdalia nudicaulis
Shepherd's Cress
Tellima grandiflora
Fringecups
Teucrium scorodonia
Wood Sage
Thalictrum flavum
Common Meadow-rue
Thunbergia mysorensis
Mysore Trumpetvine
Trichophorum germanicum
Deergrass
Trocdaris verticillata
Whorled Caraway
Trollius europaeus
Globeflower
Tuberaria guttata
Spotted Rock-rose
Tulipa turkestanica
Ulmus glabra
Wych Elm
Umbilicus rupestris
Navelwort
Vaccinium myrtillus
Bilberry
Vaccinium oxycoccos
Cranberry
Valeriana dioica
Marsh Valerian
Valeriana officinalis
Common Valerian
Verbascum nigrum
Dark Mullein
Verbascum thapsus
Great Mullein
Veronica beccabunga
Brooklime
Veronica filiformis
Slender Speedwell
Veronica scutellata
Marsh Speedwell
Veronica spicata
Spiked Speedwell
Viola odorata
Sweet Violet
Viscum album
Mistletoe