Weed Science & Agronomy
INRA-Dijon
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Unité de Malherbologie & Agronomie Weed Science & Agronomy INRA-Dijon |
Bayer Code : hersp
Synonym(s) of Sc. name:
Classification: Umbelliferae, Dicotyledonous
Common name: hogweed
Synonym(s) of Common name:cow parsnip, ceck
Name per country: DE : Wiesen-Bärenklau ; ES : branca ursina ; FR : grande berce ; IT : panace comune ; PT : canabraz ; EN : hogweed ;
Biological type: Biennial, Perennial
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- Cotyledons large (20 to 30 cm), slender, long stalked.
- Leaves orbicular to reniform, margin irregular and broadly crenate, coarse bristly hairs.
- Height: 50 to 200 cm.
- Stems hollow, ridged, hairs deflexed but not closely appressed.
- Leaves 15 to 60 cm, simply pinnate, very rarly 2-pinnate, hispid on both surfaces; segments variously lobed or pinnatifid, serrate, ovate to linear-lanceolate, the lower stalked.
- Inflorescence: Umbels up to 20 cm diameter, 7 to 20 rayed, terminal and axillary, stout. Bracts few or none, subulate. Bracteoles numerous, lanceolate-subulate. Flowers small (5 to 10 mm), white, greenish or pinkish.
- Fruits ovate to round, flattened with thickened wing.
Biological tye: biennial or perennial.
Ecological profile (click on flags):
Present
Rare
