Armoracia rusticana P.Gaertn., B.Mey. & Scherb.  
Family: Brassicaceae
horseradish
[Armoracia armoracia (L.) Cockerell ex Daniels, Armoracia lapathifolia Gilib., Cochlearia armoracia L., Nasturtium armoracia (L.) Fr., Radicula armoracia (L.) B.L.Rob., Rorippa armoracia (L.) Hitchc.]
Armoracia rusticana image
Janice Stiefel  
Etymology: Armoracia: Celtic name referring to "saline," favorite habitat of this plant
Plants: erect, perennial, 2'-3' tall forb, hairless; roots thick
Leaves: large, lower leaves on long stalks, oblong with heart-shaped bases; upper leaves smaller, with short or no stalks
Flowers: white, 4-parted, 1/4"-1/2" wide, petals rounded at the top; inflorescence of several clusters (racemes) of stalked flowers; blooms May-July
Fruits: inflated, oval pod with 2 seed chambers fruit drawing; seeds rarely maturing
Habitat: moist; gardens, disturbed areas
Hazardous: Careful, this plant is hazardous!
Conservation Status: Introduced - escaped
Armoracia rusticana image
Janice Stiefel  
Armoracia rusticana image
Emmet J. Judziewicz  
Armoracia rusticana image
Botanical Illustration  
Armoracia rusticana image
Botanical Illustration  
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