Asclepiads or Asclepiadoideae
are a subfamily in the Apocynaceae
, with about 2900 species. There are lots of leafless stem succulents
but also perennial herbs, shrubs, lianas or rarely trees. They produce remarkable flowers, for the complex mechanisms they have developed for pollination. Many species produce an unusual fragrance
, often called "carrion", and attracts flies for pollination.