Hellebore, Open black hellebore flower head on a stem, with a second flower in backview, against a pure white background.

Hellebore, Open black hellebore flower head on a stem, with a second flower in back view, against a pure white background.

Hellebore, Open flower head on a stem, with a bud and second flower in side view.

Poppy, Californian poppy, Eschsclolzia califonica, Open yellow flower head showing stigma, filaments and stamen.

Cyclamen, Cyclamen 'Alpine Violet', Open pink flower heads with leaves, shown against a pure white background.

Cyclamen, Cyclamen 'Alpine Violet', Close up of open pink flower heads shown against a pure white background.

Cyclamen, Cyclamen 'Alpine Violet', Open pink flower heads with leaves, shown against a pure white background.

Clematis, Clematis Montana Wilsonii, A single open flower head ona stem that has set and going to seed.

Clematis, Clematis Montana Wilsonii, A single open white flower with pink tinging.

Clematis, Clematis Montana Wilsonii, A open white flower with pink tinging showing filaments and stamen.

Bluebell, English bluebell, Hyacinthoides non-scripta, Single stem and pale blue flower head shown against a pure white background.

Bluebell, English bluebell, Hyacinthoides non-scripta, Stems and pale blue flower heads shown against a pure white background.