A flower development stage (PO:0007615) that begins when pollen (PO:0025281) is released by anther dehiscence (GO:0009901) and/or the stigma (PO:0009073) is receptive and ends with the process of pollination (GO:0009856) and/or floral organ senescence (GO:0080187). [source: PMID:2152125, POC:curators, POC:Laurel_Cooper]
In most species, flowering stage (anthesis) is when the flower is open and ends with pollination. During this stage, the process of anther dehiscence (GO:0009901) usually occurs, defined as the dehiscence of an anther to release the pollen grains contained within it. This term applies to an individual flower (PO:000904).