Weed Science & Agronomy
INRA-Dijon
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Unité de Malherbologie & Agronomie Weed Science & Agronomy INRA-Dijon |
Bayer Code : seniq
Synonym(s) of Sc. name:
Classification: Compositae, Dicotyledonous
Common name: narrow-leaved ragwort
Synonym(s) of Common name:
Name per country: DE : Schmalblättriges Geiskraut ; FR : séneçon du Cap ; IT : senecione sudafricano ; PT : ; EN : narrow-leaved ragwort ;
Biological type: Perennial
Seedling:
- Cotyledons lengthened, spoon-like, truncate apex.
- Leaves entire, lanceolate, more or less denate.
- Height: 50-100 cm. Plant tufted.
- Stem woody, branched in its upper 1/3.
- Leaves glabrous, persistent, lanceolate, linear (3-10 cm), margins crenulate, with thick woolly hairs. Prominent midvein.
- Flowers yellow in head 18-25 mm, the outer developed. Flowering branches ascending, in irregular corymbs. 80-100-flowered head.
- Fruit : feathery achene.
- Plant introduced in the south of France with the woollen industry (circa.1930). Native of South Africa. Rare in crops, but frequency increasing.
- Biological type: perennial.
Ecological profile (click on flags):
Rare
Present
