Euphorbia, Spurge, Mediterranean spurge, Euphorbia characias wulfenii, Close up of green coloured plant growing outdoor.

Euphorbia polyacantha, Mass of spiky plants growing outdoor.-

Candelabra tree, Euphorbia candelabrum, Side view showing pattern against a blue sky.-

Euphorbia echinus, Detail showing the pattern of spiky needles.-

Euphorbia echinus, Mass of green spiky plants growing outdoor.-

Spurge, Mediterranean spurge, Euphorbia characias wulfenii, growing outdoor.-

Pincushion Euphorbia, Euphorbia enopla, Close up showing spiky texture.

Pincushion Euphorbia, Euphorbia enopla, Close up showing spiky texture.

Mediterranean spurge, Euphorbia characias wulfenii, Top close view of 2 unfurling flowerheads over whorls of grey green leaves,

Mediterranean spurge, Euphorbia characias wulfenii, Top close view of unfurling flowerhead over a whorl of grey green leaves.

Candelabra tree, Euphorbia candelabrum, Side view of several ridged spikey columns in sunlight against a blue sky.

Spurge, Wood spurge, Euphorbia amygdaloides 'Frosted flame', Several pink tinged variegated foliage tips.

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.

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

Monkshood, Aconitum 'Ivorine' flowers, close up.

Monkshood, Aconitum 'Ivorine' flowers, close up.

Petunia.

Rose, Rosa.

Datura, Angels' trumpets, Brugmansia.

Clover, white clover, Trifolium repens.

Mayweed, Scentless mayweed, Matricaria maritima.

Stitchwort, Stellaria holostea.

Abstract.