Photo: Dracocephalum ruyschiana.

Flowering plants. Helsinki, Finland. Planted. 2002-06-29.
Dracocephalum ruyschiana L. Engl.: northern dragonhead. Deu.: Drachenkopf. Suom.: isoampiaisyrtti. Sven.: drakblomma, svensk drakblomma. Bot. syn.: Ruyschiana spicata Mill., Zornia linearifolia Moench
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Photo: Dracocephalum ruyschiana.