Crocus, Early crocus, Crocus tommasinianus, Studio shot of purple flowers showing orange stamens.

Crocus, Early crocus, Crocus tommasinianus, Studio shot of purple flowers showing orange stamens.

Cactus, Christmas cactus, Schlumbergera buckleyi, Studio shot of pink flowers.

Cactus, Christmas cactus, Schlumbergera buckleyi, Studio shot of single pink flower.

Rhododendron, Studio shot of white flowers on a stem against a pure white background.

Rhododendron, Studio shot of white flowers on a stem against a pure white background.

Rhododendron, Studio shot of white flowers on a stem against a pure white background.

Hawthorn, Common hawthorn, Crataegus monogyna, Studio shot of branch with white flowers.

Aquilegia, Columbine, Single stem of plant with pale purple head set against a pure white background.

Aquilegia, Columbine, Single stem of plant with slightly dropped pale purple head set against a pure white background.

Aquilegia, Columbine, Single stem of plant with slightly dropped pale purple head set against a pure white background.