Area protetta regionale Giardini Botanici Hanbury

Succulent plants are suitable to live in dry conditions thanks to the water they store in some of their organs, in specialized tissues. Sometimes the leaves have a plump aspect (Crassulaceae, Compositae), more often the trunks transform themselves into real reservoirs (Cactaceae, Euphorbiaceae). The leaves, also to limit transpiration as much as possible, tend to disappear or to transform into thorns. The photosynthesis is carried out by green trunks.
Some strategies give the opportunity to limit the loss of water: thick cuticles and wax-like coverings.

The flowers of Succulent Plants (Italian text)

Succulent plants and evolution convergence (Italian text)