HYPP-A Unité de Malherbologie & Agronomie
Weed Science & Agronomy
INRA-Dijon

Bayer Code : sonas

Scientific name: Sonchus asper (L.) Hill

Synonym(s) of Sc. name:

Classification: Compositae, Dicotyledonous

Common name: prickly sow-thistle

Synonym(s) of Common name:

Name per country: DE : Dornige Gänsedistel ; ES : cerraja ; FR : laiteron rude ; IT : grespino spinoso ; PT : serralha-áspera ; EN : prickly sow-thistle ; NL : gekroesde melkdistel ; DK : ru svinemælk

Biological type: Annual

Seed snapshot Seed:

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Seedling snapshotSeedling snapshot Seedling:

- Cotyledons lengthened, spoon-shaped.

- Leaves entire, ovate or deltoid, irregularly dentate.

Adult plant snapshot Adult plant:

- Height: 20-80 cm.

- Stem hollow, few-branched.

- Basal leaves in rosette, light-green; later alternate, oblong, sinuate -dentate, pinnatifid or often entire and lanceolate, strongly spiny, amplexicaul with 2 broad, rounded and twisted auricles.

- Flowers yellow; involucre smooth or with few glandular hairs, present on peduncles.

- Fruits : achenes not warty, smooth or with some very short hairs on the border.

- Populations exist which are resistant to triazines in France.

- Biological type: annual.

Ecological profile (click on flags): BeneLux   Present     Germany  Present     Denmark  Present     Spain  Present     France  Present     Great Britain  Present     Italy  Present     Portugal Present    

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