Stellaria palustris
Marsh Stitchwort
Stereum gausapatum
Bleeding Oak Crust
Stereum hirsutum
Hairy Curtain Crust
Stropharia semiglobata
Dung Roundhead
Stuckenia pectinata
Fennel Pondweed
Suaeda maritima
Annual Sea-blite
Succisa pratensis
Devil's-bit Scabious
Symphoricarpos albus
Snowberry
Symphyotrichum lanceolatum
Narrow-leaved Michaelmas-daisy
Symphytum asperum
Rough Comfrey
Symphytum officinale
Common Comfrey
Symphytum orientale
White Comfrey
Symphytum x hidcotense
Hidcote Comfrey
Symphytum x uplandicum
Russian Comfrey
Syntrichia ruralis
Sand-hill Screw-moss
Tamarix gallica
Tamarisk
Tamus communis
Black Bryony
Tanacetum parthenium
Feverfew
Tanacetum vulgare
Tansy
Taraxacum agg.
Taraxacum britannicum
Taraxacum falcatum
Dandelion
Taraxacum palustre
Taraxacum richardsianum