The sporocarps are functionally and developmentally modified leaves, although they have much shorter stalks than the vegetative leaves. Inside the sporocarp, the modified leaflets bear several sori, each of which consists of several sporangia covered by a thin hood of tissue (the indusium).
The structures that produce spores in fungi are modified leaves with reduced stalks compared to regular leaves. Within these modified leaves, there are areas called sori that contain multiple sporangia, each protected by a thin layer of tissue.