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

Agave, Giant agave, Agave salmiana, Close view of grafitti scratched into the fleshy leaf.

Agave, Giant agave, Agave salmiana, Close view of grafitti scratched into the fleshy leaf.

Cactus, A spikey blue leaf showing groups of spines.

Prickly pear cactus, Opuntia humifusa, Close view of spikey leaves and fruit starting to colour deep red with a snail sat on one leaf.

Cactus, Mexican fence post cactus, Pachycereus Marginatus viewed from below against a blue sky with wispy clouds.

Mallow, Lavatera trimestris, Single pink veined with white flower against a grey dappled background.

Cow's horn, Euphorbia grandicornis, Close up showing the spines and small yellow flowers.

Agave, Agave attenuata, Close up showing texture.

Agave, Agave attenuata, Close up showing texture.

Great desert spoon, Dasyliron achrotrichum, Dramatic spikey mass of silvery narrow leaves standing out against a dark background.

African Milk Tree, Euphorbia trigona f. 'Rubra', Several angled spikey stems of the showing the red edges.

Yucca, Yucca aloifolia 'Vittorio Emanuele II', Close up of the white flowers.