A floral organ formation stage (PO:0025585) which begins with the development of the floral organ meristem (PO:0000229) from a portion of meristem tissue (PO:0009013) and ends with the beginning of the floral organ primordium development stage (PO:0007602). [source: PMID:2152125, POC:curators, POC:Laurel_Cooper]
Comment
During this stage, the process of floral meristem growth (GO:0010451) occurs. This process is defined as the increase in size or mass of a floral meristem, a population of undifferentiated cells in a plant that gives rise to a flower.