In a manner relating to or characterized by endospore formation; with respect to endosporous reproduction or properties.
Adverbial form of endosporous, using the -ly suffix to convert the adjective into a manner description. Rare in modern usage, found primarily in specialized mycological and botanical literature.
While rarely used, 'endosporous' as an adverb might describe how certain bacteria 'behave' endosporous-ly when facing stress—forming protective spores as a survival strategy.
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