Antheridophore is the modified region of the thallus.
It has a flat surface, wherein antheridial opening is located to facilitate sperm dispersal.
Each chamber present on the upper surface of the antheridiophore, has  one antheridium.
Rhizoids and scales are located on the ventral surface.
In bryophytes, antheridium is generated on an antheridiophore (stalk-like structure which carries antheridium at its top portion)
In gymnosperms and angiosperms, male gametophytes is reduced to pollen grains wherein their antheridia is reduced to a single generative cell in the pollen grain.