Fertile leaves produce sporangia that contain haploid spores. Asexual reproduction involves the formation of chlamydospores and sporangia, producing motile zoospores. Both types of spores develop into gametophytes inside sporangia. The spores are round or oval globules individually attached to stalks sprouting from sporangia. The sporangia open by lateral dehiscence to release the spores. The sporophyte has two kinds of spore-forming organs (sporangia). Their spores are produced on or in aerial sporangia and are spread by wind. Some form male organs (stamens), the male sporangia (microsporangia) producing microspores. The defining feature of the clade is that the sporophyte branches and bears multiple sporangia. Others form female organs (carpels), the female sporangia (megasporangia) producing a single large megaspore. The fruiting bodies or sporangia are what are commonly seen. The endospores are ellipsoidal, located in central/paracentral, unswollen sporangia. This occurred by spore germination within sporangia rather than spore release, as in non-seed plants. They can be distinguishable from "Rhizopus stolonifer" as they have smaller sporangia and spores. Explosive dehiscence of sporangia is a characteristic of "Sphagnum".