The mitocytes, meiocytes and meiospores present in the anther respectively are
Sporogenous cells, pollen mother cells, pollen grains
Sporogenous tissue undergoes mitosis and forms pollen mother cells (PMC) or mitocytes. These mitocytes undergo meiosis and form haploid microspores (meiocytes) that ultimately mature and form pollen grains that are also termed meiospores.