The American Begonia Society is a horticultural society devoted to the promotion, cultivation, and study of begonias (plant family Begoniaceae). The organization was founded in 1932, and has a worldwide membership. It is the International Cultivar Registration Authority for begonias.
The organization publishes a bi-monthly magazine, The Begonian.
The stated aims and purposes of the ABS are:
References
American Begonia Society Wikipedia(Text) CC BY-SA