In succulent species the leaves are mostly small and short-lived.

Especially in certain succulent species, the leaves may also be thick and fleshy.

Euphorbia candelabrum is a succulent species of plant in the Euphorbiaceae family.

The main stem and mostly also the side arms of the succulent species are thick and fleshy, 15-91 cm (6-36 inches) tall.

Portulaca bicolor is a succulent species of the family Portulacaceae with cylindrical leaves and red stems.

Except for the succulent species, they are generally easy to grow in a greenhouse.

Plant families and genera in which succulent species occur are listed below.

The table below shows the number of succulent species found in some families:

Caralluma edulis is a succulent species in the plant family Apocynaceae.

Camels have been implicated in the reduction of plant species, particularly the more succulent species such as the quandong.