About 10 years ago, the ABC model for the genetic control of flower develop
ment was proposed. This model was initially based on the analysis of mutant
flowers but has subsequently been confirmed by molecular analysis. This pa
per describes the 200-year history behind this model, from the late 18th ce
ntury when Goethe arrived at his idea oi plant metamorphosis, to the geneti
c studies on flower mutants carried out on Arabidopsis and Antirrhinum in t
he late 20th century. (C) 2001 Academie des sciences/Editions scientifiques
et medicales Elsevier SAS.