Where does “persicaria” come from?
persicaria (Latin) comes from Latin Persicus, from Ancient Greek περσικός, from Ancient Greek Πέρσης, from Old Persian 𐎱𐎠𐎼𐎿, from Proto-Iranian párcuš, from Proto-Indo-Iranian párćuš, from Proto-Indo-European pérḱus — chest; rib.
Ancestry of “persicaria”, step by step