Apocynoideae (Burnett, 1835) Etymology: Subfamily of plants related to Apocynum.Place of Origin: Tropical and subtropical Africa, as well as tropical and subtropical regions of Asia, Madagascar, and the Americas.
Asclepiadoideae (Burnett 1835) Not all plants in this subfamily are succulents. It is characterized by complex flowers with coronas and a specialized pollination system using pollinia, similar to that of orchids. It exhibits great morphological diversity and, in many genera, a marked adaptation to arid climates through water storage, primarily in stems or roots. Several species demonstrate ease of propagation from plant fragments, particularly those with succulent growth. Etymology: From the Asclepias subfamily.Place of Origin: Virtually all tropical and subtropical regions of the world.