Definition of "macrosporangia" []

• Plural form of macrosporangium. (noun)

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• "The macrosporangia (ovules) are borne on similar leaves, known as carpels, and, like the pollen sacs, borne in pairs, but on the upper side of the sporophyll instead of the lower."
• "The macrosporangia are also ordinarily known as "ovules," a name given before it was known that these were the same as the macrosporangia of the higher pteridophytes."
• "The spores are of two kinds, as in _Selaginella_, but the macrosporangia contain numerous macrospores."