botany

Bittersweet Solanum dulcamara with distinctive purple and yellow flowers and one bright red berry

Black eyed Susan Rudbeckia hirta with three blooms, one in flower, one in bud, and one going over

Black horehound Ballota nigra with detail on individual purple flower

Black Nightshade Solanum nigrum sprig with setails of seed, flower, stamen, and berry included

Black grass Alopecurus myosuroides

Black poplar Populus nigra leaf flower and catkins

Blackberry Rubus fruticosa showing flowers, ripe and unripe fruit, and a leaflet

Blackthorn Prunus spinosa with a sprig showing spine, leaf and fruit and the other sprig showing blossom

Abscission diagram showing ho w the abscission layer lets the leaf fall off without exposing the plant to pathogens

Bugle Ajuga reptans plant with stolon

Alder buckthorn Rhamnus frangula sprig with close up of berry and flower, berries red and purple

Pollarded Alder Alnusglutinosa tree in leaf

Alpine ladies mantle alchemilla alpina with pale underside of leaves ahown and fibrous root area

Amethyst deceiver Laccaria amethystina clump growing on moss and dead woos and in different stages of growth

Arrowhead Sagittaria sagittifolia pencil image showing plant above and below wtaer and the different leaves in both habitats, in flwoer

Ash dieback symptoms Fraxinus excelsior Chalaria showing damaged inside of wood, damage on bark, little white fungal bodies, withered leaves on the branch, and individuall diseased leaf, the tree with exposed branches due to die back and a branch with siwtheres fronds of leaves on it

Ash Fraxinus excelsior pen and ink stippled drawing of the tree without leaves

Ash Fraxinus excelsior twig in bud and leaf spray

Autumn crocus Colchicum autumnale two flowers and leaf

Autumn leaf study of an Acer showing bright vivid red and yellow colours, leaf has damage and minor holes

Auxin diagram showing how applying auxin to the top of a plant encourages vertical rather than lateral growth

Avalanche rose Rosa two in bloom with dark leaves and white petals

Barberry Burberis vulgaris with red berries, yellow flowers and spiny twigs

Barley Hordeum vulgare with green and mature ripe seed head