Euphorbiaceae, Apocynaceae, Agavaceae, Asphodelaceae (Aloeaceae), Chenopodiaceae, and Portulacaceae (Oldfield, 1997). Succulents are native to many regions from northern Europe to the Far East, although most are concentrated in southern and eastern Africa. Exploration and trading over the last 4 centuries and natural distribution enabled cacti and succulents to establish themselves in new habitats across the world (Hewitt, 1993). Cactaceae is the largest family of succulent plants, nearly endemic to North and South America, followed by Aizoaceae in South Africa. Euphorbiaceae is considered the fourth largest family among flowering plants, with over than 1000 species and worldwide distribution.Succulents vary in shape and size from more than a few millimeters high to massive trees such as the African baobab (Adansonia digitata L.). Hewitt (1993) recognized 3 different habitats for succulents: 1) desert plains, including harsh dry habitats; (2) mountainous terrain, including high plateau, screes, and rocky slopes, where the soil is often very thin, does not retain much water, and has a high mineral content that can be toxic to nonsucculent plants; and 3) forests, where species inhabit subtropical and tropical rainforests such as those in Central and South America, Africa, Sri Lanka, and the West Indies, where the climate is constantly hot and humid and sunlight is filtered through a thick tree canopy. Economically, they can be used for medicinal (Aloe ferox Mill.) or mystical (Haworthia limifolia Marloth) purposes or as food [Fockea edulis (Thunberg) K.Schumann] and cordage (Sansevieria aethiopia Thunb.).Studies on succulent vegetation, distribution, phytosociology, and biodiversity are universally known