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Succulents is the collective name for plants which are able to collect moisture during rainy periods and conserve it for dry periods. Succulents are characterised by the presence of water-storing tissues in the stems, leaves and/or roots. In addition, the plants often display xerophytic properties such as reduction of their surface area, reduction and absence of leaves, a thick wax layer, hairs or thorns and stomas below the surface. The Succulents can be divided into the following categories: Leaf succulents Stem succulents Caudiciform plants Root succulents Succulents can be found in 6 families of the monocotyls and 45 families of the dicotyls. There are about 10,000 species in total. Succulents are not found in the Conifer family. In 5 families, practically all species are more or less succulent: Aizoaceae, Cactaceae, Crassulaceae, Didiereaceae and Portulacaceae.
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