Front - Index - First - Previous - Next - Last
Example of morphological convergence in the succulent plants; from left to right: Senecio stapeliaeformis (fam. Compositae), Cereus peruvianus (fam. Cactaceae) and Euphorbia candelabrum (fam. Euphorbiaceae)

The apparent uniformity that can be observed in plants belonging to systematically distant families is the result of a converging adaptation to extremely arid environments and can be seen in the acquisition of particular features, such as water-storage tissues, whose mucilages can hold notable amounts of water, the many-layered and cutinised epidermis, the transformation of leaves into thorns, the presence of photosynthetizing stems, the assuming of spherical forms with the aim of reducing transpiration surface and so on.