Usage History of 'sporangia'

The following chart shows how frequently 'sporangia' appeared in printed materials over time. For example, the word 'sporangia' occurred 40 times in books in 1761 and 4,010 times in 2008. From 1761 to 2008, the word 'sporangia' was used a total of 414,872 times in books scanned by Google. See Reference: Google Ngram project.

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