Armoracia Gilib.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1964, Flora Europaea - Volume 1. Lycopodiaceae to Platanaceae, Cambridge University Press : 284

39. Armoracia Gilib. 1

Perennial herbs; glabrous. Leaves simple to pinnatifid. Sepals not saccate; petals white, shortly clawed. Fruit a subglobose to ellipsoidal silicula; valves weakly reticulate-veined; style short; stigma capitate to slightly 2-lobed. Seeds in 2 rows in each loculus. Silicula 4-6 mm; seeds usually 4-6 in each loculus 1. rusticana Silicula 10-15 mm; seeds c. 10 in each loculus 2. macrocarpa