What is "peucedanum ostruthium"

Madnep \Mad"nep\, n.

1. (Bot.) The masterwort ( Peucedanum Ostruthium), a tall and coarse European umbelliferous plant.

2. (Bot.) A biennial weed in Europe and America having large pinnate leaves and yellow flowers and a bitter and somewhat poisonous root; the ancestor of cultivated parsnip; called also wild parsnip.

Masterwort \Mas"ter*wort`\, n. (Bot.)

1. A tall and coarse European umbelliferous plant ( Peucedanum Ostruthium, formerly Imperatoria).

2. The Astrantia major, a European umbelliferous plant with a showy colored involucre.

3. Improperly, the cow parsnip ( Heracleum lanatum).

Peucedanum ostruthium or Imperatoria ostruthium, Masterwort, is a species of flowering plant in the family Apiaceae. It is native to the mountains of Central and Southern Europe, but has been widely introduced outside its native range.