An alternative or variant spelling of herbaria or herbariums; likely a misspelling or rare variant form of herbarium plural.
This appears to be a variant or corrupted spelling, possibly from mixed Latin-English pluralization attempts or historical transcription errors. It may represent 'herbaria' with duplicate vowels.
Words like this show up in old catalogues and scientific texts where spelling wasn't standardized—scientists of the 1700s-1800s would sometimes invent plural forms on the spot, creating linguistic fossils we still find in archives.
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