Fig. 9

Representative scheme of the A, B, C and E-class gene expression in petalous (Eschscholzia californica and Papaver somniferum) and apetalous (Bocconia frutescens) Papaveraceae members in comparison with the model Ranunculaceae (Aquilegia coerulea). Light yellow in Aquilegia for homologs of FUL-like genes indicates broad expression in floral organs but no known roles in floral organ identity [27]. The models are taken directly or constructed based on data from Drea et al. [28], Yellina et al. [54], Pabón-Mora et al. [26, 27], Sharma and Kramer [29], Lange et al. [55]. St.odia Staminodia