Pictorial guide to the flora of the British Isles

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Imperatoria ostruthium L.

masterwort (Apiaceae / Umbelliferae)

 SpreadBias within British IslesDirection of bias
RestrictedStrong tendencyN
Plant Atlas 2020
BSBI Distribution Map

Synonym | Peucedanum ostruthium (L.) W. D. J. Koch

Imperatoria ostruthium is a persistent relic of cultivation in northern Britain and Northern Ireland.

Isère (38), France; 2017-07-09

 masterwort / Imperatoria ostruthium: _Imperatoria ostruthium_ is a persistent relic of cultivation in northern Britain and Northern Ireland.

All images copyright © Christopher J. Dixon unless otherwise indicated.

L-R: Bidens tripartita, Melilotus officinalis, Mimulus guttatus, Thalictrum flavum, Ranunculus peltatus, Anchusa arvensis, Malva alcea, Lolium perenne