In flowering plants archesporium gives rise to

In flowering plants, archesporium gives rise to Wall and tapetum.
The cell or group of cells from which spore mother cells develop (as those from which the microspores develop in the pollen sac or the megaspore in the ovule).
A two-lobed anther develops four pollen sacs that situate at four corners of the anther. Development of pollen sacs begins with the differentiation of archesporial cells in the hypodermal region below the epidermis at four corners of the young anther.
The archesporial cells divide by periclinal division to give a subepidermal primary parietal layer and a primary sporogenous layer.