Armoracia rusticana
English: Horseradish; Pepperrot: Mountain radish; Red cole; Great raifort.
Synonym: Armoracia lapathiofolia; Cochlearia armoracia.
Dutch: Mierikswortel.
Use: condiment for sauce or relish; young, tender leaves as a potherb and salad green; 1 of the 5 bitter herbs (horseradish, coriander, horehound, lettuce, nettle) of the Jewish holiday of Passover; traditional medicine.