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Silver Birch Betula pendula tree shape without leaves, close up of bark, and sprig with leaves and catkins

Slender St Johns Wort Hypericum pulchrum

Slender St Johns Wort Hypericum pulchrum showing red basal leaves and details of the calyx

Small scabious Scabiosa columbaria with flower detail and showing vegetative growth along a stolon

Snakeshead fritillary Fritillaria meleagris flowers

Sneezewort Achillea ptarmica plant

Snowball tree Viburnum opulus sterile with detail of individual flowers

Snowdrop Galanthus nivalis with one flower

Somerset redstreak apple Malus domestica with apple blossom, leaves, and two ripe apples

Sorghum Sorghum bicolor plant

sheeps fescue festuca ovina with spikelet, lemma and ligule detail

Sheeps sorrel Rumex acetosella whole plant with flowers

Shining cranesbill Geranium lucidum with scarlet leaves, flowers, and seedheds

Silver birch Betula pendula bark study with a small layer of bark curling off the tree

Rosebay Willowherb Chamaenerion angustifolium

Rosemary Rosmarinus officinalis sprig

Rowan Sorbus aucuparia sprig of leaves, clutch of orange berries and white flowers

Rye grass Lolium perenne and individual spikelet

Rye Secale cereale whole plant and seedhead

Sage Salvia officinalis in flower

Salad burnett Sanguisorba minor with detail of individual male and female flowers

Sanicle Sanicula europea with flower detail and seeds shown on the plant as well as flowers

Scots pine Pinus sylvestris tuft with mature cone and green cones

Seaside centuary Centaurium littorale growing on a dune