Sambucus ebulus
Dwarf Elder
Samolus valerandi
Brookweed
Schoenoplectus tabernaemontani
Grey Club-rush
Scilla forbesii
Glory-of-the-snow
Senecio sarracenicus
Broad-leaved Ragwort
Silene rupestris
Rock Campion
Simethis mattiazzii
Kerry Lily
Soldanella alpina
Alpine Snowbell
Sorbus aria
Common Whitebeam
Sorbus stenophylla
Llanthony Whitebeam
Spiraea x rosalba
Intermediate Bridewort
Spirodela polyrhiza
Greater Duckweed
Stellaria aquatica
Water Chickweed
Stuckenia pectinata
Fennel Pondweed
Symphyotrichum lanceolatum
Narrow-leaved Michaelmas-daisy
Symphytum x hidcotense
Hidcote Comfrey
Taraxacum agg.
Taraxacum britannicum
Thymus drucei
Wild Thyme
Thymus pulegioides
Large Garden
Tolypella glomerata
Clustered Stonewort
Tripolium pannonicum
Sea Aster
Trocdaris verticillata
Whorled Caraway
Typha latifolia
Bulrush