Found 2 items, similar to macrosporangium.
English → English (WordNet) Definition: macrosporangium macrosporangium n : a plant structure that produces megaspores [syn: megasporangium] [also: macrosporangia (pl)]
English → English (gcide) Definition: Macrosporangium Macrosporangium \Mac`ro*spo*ran"gi*um\, n. [NL. See Macro-, and Sporangium.] (Bot.) A sporangium or conceptacle containing only large spores; -- opposed to microsporangium. Both are found in the genera Selaginella, Isoctes, and Marsilia, plants remotely allied to ferns. [1913 Webster]