These 3 genera, in the Crassulaceae family, include plants from many parts of the world.
The Bromeliads, like Cacti and Agavaceae are a New World family.
There are around 200 species in the genus, most from Mexico, some from the southern United States and into South America.
Both genera are from South Africa and are closely related.
Aloe, is a genus containing about four hundred species of flowering succulent plants. The most common and well known of these is Aloe vera, or "true aloe".
Succulents entered as miniatures include representatives from almost every family, and a list would be far too long to print.
From northern Africa and islands close by. They produce succulent rosettes of waxy leaves, generally at the end of naked stems.
A genus of at least 28 species of small clumping leaf succulents from South Africa.