- sporangium, spore case, spore sac - organ containing or producing spores
--1 is a kind of reproductive structure
--1 has particulars:megasporangium, macrosporangium; microsporangium; eusporangium; leptosporangium; tetrasporangium - sporocarp, spore case - specialized leaf branch in certain aquatic ferns that encloses the sori or clusters of sporangia
--2 is a kind of reproductive structure