An extremely rare or obsolete botanical term possibly describing a modified achene or related fruit structure.
Possibly from 'achene' with Latin botanical suffixes combined, though this term appears to be either very specialized, archaic, or possibly erroneous in current botanical usage.
Terms like 'achenodium' remind us that scientific language is constantly evolving—older botanists named things that seemed important at the time, but as understanding deepened, clearer terms replaced confusing ones.
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