Microsporophyll of Selaginella is the forerunner of which structure of angiosperm

Selaginella is also known by the names of spike moss or small club moss. It is heterosporous with male and female spores. Microsporophyll of Selaginella is the forerunner of the stamen. The mass of sporogenous cells develops into the sporogenous cell which undergoes meiosis to form haploid spores. The sporangia are arranged in form of cone-like structure known as strobilus which is the forerunner of the stamen.