Photo: Peucedanum ostruthium 3.

Seedhead on a mass of leaves. Gothenburg bot.g., Sweden. Planted. 2007-07-12.
Peucedanum ostruthium (L.) Koch Engl.: masterwort. Deu.: Meisterwurz, Kaiserwurz. Suom.: rohtosuoputki. Sven.: mästerrot. Fran.: impératoire. Ital.: imperatoria. Dutch: meesterwortel. Pharm.: rhizoma imperatoriae. Bot. syn.: Imperatoria ostruthium L.
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Photo: Peucedanum ostruthium 3.