Male flowers have a reproductive part called the stamen. The stamen is made up of a stem, called the filament, and the anther.
Parts of the flower (Illinois Extension)
Electron microscope image of anther with pollen grains
Anthers are usually found in pairs called anther lobes. Each anther lobe contains two spongey pockets, called microsporangia. Within the microsporangia, microscopic pollen spores (microgametophytes) develop.
Anthers come in many shapes and sizes.
You can hand-pollinate many garden plants by removing the anther and touching it to several flowers. You can also accomplish this by taking a small natural bristle paintbrush first to the anther, and then to female reproductive organs within flowers, called pistils.
Lily stamens with brilliant red anthers (Liam Higginson)