The part of the stamen that contains pollen.

Parts of a flower.
A perfect flower has functional male parts (stamens) and female parts (pistils).
Pistil: The female part of a flower, consisting of a stigma, a style and an ovary.
Stigma: The top of the style, where pollen enters the pistil.
Style: The part of the pistil between the ovary and the stigma.
Ovary: The enlarged lower part of a pistil, enclosing the ovules or young seeds.
Stamen: The male reproductive organ of a flower.
Anther: The part of the stamen that contains pollen.
Filament: The stalk of a stamen.
Pollen: Male spores produced in the anthers of a flower.