Probable transcription factor that promotes early floral meristem identity in synergy with APETALA1, FRUITFULL and LEAFY. Is required subsequently for the transition of an inflorescence meristem into a floral meristem. Seems to be partially redundant to the function of APETALA1. Homodimer capable of binding to CArG-box sequences. Expressed in some of the meristems of arrest-stage cauliflower heads. This is a truncated version of CAULIFLOWER that may contribute to the 'cauliflower'-shaped floral meristem (curd). This trait has likely been selected by early farmers during the domestication of modified inflorescence structures.