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. CAULIFLOWER may contribute to the shape of the floral meristem. This trait has likely been selected by early farmers during the domestication of modified inflorescence structures.