Armoracia rusticana ( Horseradish )
This perennial has a chunk constitute increase riding habit . Leaves are 12 to 20 inches foresighted , oval , toothed and dark-skinned green , on long stalks . Roots are cream coloured , fleshy and branching . Leafy , branched stems bear terminal panicle of ashen flower up to 1/2 across . Horseradish is primarily used as a condiment in cookery have it off for its secure bite . The sap from this plant may irritate the peel ....