Flower Mandala, manipulated image created by multiplying section of plant into a complete geometric shape.

Flower Mandala, manipulated image created by multiplying section of plant into a complete geometric shape.

Chinese meadow rue, Thalictrum delavayi showing delicate flower panicles.

Chinese meadow rue, Thalictrum delavayi showing delicate flower panicles.

Hibiscus, Rose mallow 'Blue Bird', Hibiscus syriacus 'Oiseau Bleu' close up showing stamen.

St John's wort, Hypericum perforatum, close up showing clusters of the yellow flowers with protruding stamens against dark green background.

St John's wort, Hypericum perforatum, close up showing clusters of the yellow flowers with protruding stamens against dark green background.

St John's wort, Hypericum perforatum, showing clusters of the yellow flowers with protruding stamens against dark green background.

St John's wort, Hypericum perforatum, showing clusters of the yellow flowers with protruding stamens.

Poppy, Iceland poppy, Papaver nudicaule 'Garden gnome' buds. 2 hairy buds closely entwined.

Rose root, Rhodiola rosea, used in herbal medicine. Close up of single flower head, selective focus.

Rose root, Rhodiola rosea, used in herbal medicine. Close up of single flower head, selective focus.