This e-book treats forty-nine genera of the plant family Apiaceae, which is also called Umbelliferae because of the umbrella-like shape of the inflorescence. The authors who thought up the generic names are identified. and an interesting fact is given for each author. Also given is the native home of the plants of each genus. Information is also given concerning the number of accepted species in each genus. Finally, there is a brief description of the plants.