fruit

Tubular water dropwort Oenanthe fistulosa in amongst grasses with flowering head and seed head, and showing the stem swelling as well as leaves

Sundew Drosera rotundifolia with basal rosette of leaves and emerging flowering spikes

Sunflower Helianthus annuus close up of one flwoer

Sweet flag Acorus calamus fruit growing from leaf, pencil

Potato Solanum tuberosum vs Sweet potato pomoea batatas tuber diagram

Sweet woodruff Asperula odorata with cross section of stem and seeds and flowers on the plant

Sycamore Acer pseudoplatanus leaves with winged fruit amd flowers

Teasing Georgia Rose, cream flower with buds and fully flowering bloom

Tobacco Nicotiana tabacum plant in flower showing limited caterpillar damage and Hornworm Manduca sexta on leaf, cut to white, and egg, pupa, and adult Carolina sphinx moth

Toothwort Lathrea squamaria flower with lack of chlorophyll explaining its parasitic life style

Tormentil Potentilla erecta plant showing both shapes of leaves

Diagram of schematic tree, very simplified colour wash over pen and ink showing how the root system is as large as the tree above ground

Red clover Trifolium pratensis plant

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