mold]] cut open to reveal sporangia]] A sporangium (pl., sporangia) is a plant or fungal structure producing and containing spores. Sporangia occur on angiosperms, gymnosperms, ferns, fern allies, bryophytes, alga, and fungi. Their spores are sometimes called sporangiospores. Microsporangia are the structures on the stamens of flowers called anthers, and the pollen-producing structures on the microsporophylls of male conifer cone or cycad cones. Megasporangia are the comparable "female" structures on these plants, associated with the flower carpel and the megasporangial cone. On ferns, the mature plant is a sporophyte that develops sporangia, tiny, stalked sacs which contain meiospores, on all or just certain leaves (called sporophylls if sporangia are present). The spores are on the unde

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