| Heracleum sphondylium |
| Authority | : | Linnaeus, 1753 |
| Subspecies | : | pyrenaicum (Lam.) Bonnier & Layens, 1894 |
| Nederlands | : | Gewone berenklauw |
| English | : | Hogweed |
| Deutsch | : | Wiesen-Bärenklau |
| Norsk | : | Bjønnkjeks |
| Svenska | : | Björnloka |
| Français | : | Berce des prés |
| Italiano | : | erba orsina, panace comune, sedano sei prati, spondiglio |
| Español | : | belleraca, branca ursina, cornases, hierba de Hércules, tanecas, trébol de oso, ursina, ursina falsa, zebuda |
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| Amstelveen, the Netherlands; 20 July 2011. Unusual color form. |
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| Amstelveen, the Netherlands; 23 November 2014. | ||
Heracleum sphondylium pyrenaicum |
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| Platanos (Ioannina), Greece; 17 July 2020. | |
Mutation in flower-determining genes |
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| Tigrad (Smoljan), Bulgaria.; 29 June 2021. | ||
| This plant has a mutation in one of the genes involved in flower development, turning some flower organs into normal leaves. |