Plants Belonging To Apocynaceae

Many species are tall trees found in the tropical rainforest, and most are from the tropics and subtropics, but some come from tropical dry, xeric environments. There are also some perennial herbs from temperate zones. Many of these plants have milky sap; and many species are poisonous if ingested. Some genera of Apocynaceae, such as Adenium however, have either clear and milky, latex sap, and others, such as Pachypodium, always have clear sap.