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Persian Hogweed Heracleum persicum in flower showing habit and growth form

Milkweed Asclepias syriaca habit drawing showing two plants in flower

Lupin Lupinus polyphyllus habit drawing showing palmate leaves and flower spikes

Japanese knotweed Fallopia japonica habit drawing showing thicket of the plant

Japanese Hop Humulus japonica habit drawing showing how the plant climbs and spreads

Himalayan balsam Impatiens glandulifera habit drawing showing entire plant

Canadian Goldenrod Solidago canadensis habit drawing showing entire plant

Japanese rose Rosa rugosa habit showing mature bush in flower

Yellow horned-poppy Galucium flavum with seed pod

Thrift Armeria maritima with individual flower detail

Spring squill Scilla verna botanical illustration by Lizzie Harper showing large bulb

Sheeps bit Jasione montana showing plant and individual flower

Sea wormwood Artemesia maritima with outline showing shape of one lower leaf and flowering spike

Sea Sandwort Honckenya peploides showing distinctive stacked leaves and individual flower

Sea rocket Cakile maritima with detail of cross section through seed pod

Sea radish Raphanus raphanistrum maritimus with detail of one leaflet and constricted seed pod

Sea plantain Plantago maritima

Sea pea Lathyrus japonicus with detail of pea pod, seed, and square stem

Sea Milkwort Glaux maritima with individual flower in leaf axis

Sea mayweed Tripleurospermum maritimum with disc floret and achene with elongated oil gland

Sea holly Eryngium maritimum with single bract and seed

Sea Kale Crambe maritima

Sea campion Silene maritima showing inflated calyx, purplish stem tint and large white flowers

Sea carrot Daucus carota gummifer showing individual purple and white flowers and seed