sepals

Potato Solanum tuberosum vs Sweet potato pomoea batatas tuber diagram

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 pencil drawing

Snowdrop Galanthus nivalis with one flower

Soft rush Juncus effusus pecil drawing

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

Southern Marsh Orchid Dactylorhiza praetermissa

Silver birch Betula pendula pen and ink tree shape without leaves

Soybean Glycine max with pods and one flower

Silver birch Betula pendula trees vignette

Spiked Water Milfoil Myriophyllum spicatum pencil drawing showing the plant below and above the water

Silver Birch Betula pendula twig with buds and catkins and leaf

St Johns Wort Hypericum with very pale leaves, rooting nodes, and buds as well as flowers

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

Skunk Cabbage Lysichiton americanus pencil drawing

Slender St Johns Wort Hypericum pulchrum

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

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 trees in pen and ink from young dapling to mature adult tree