Weed Science & Agronomy
INRA-Dijon
|
Unité de Malherbologie & Agronomie Weed Science & Agronomy INRA-Dijon |
Bayer Code : erica
Synonym(s) of Sc. name: Erigeron canadensis L.
Classification: Compositae, Dicotyledonous
Common name: canadian fleabane
Synonym(s) of Common name:
Name per country: DE : Kanadisches Berufskraut ; ES : erigeron del canada ; FR : vergerette du Canada ; IT : saeppola canadese ; PT : avoadinha ; EN : canadian fleabane ; NL : kanadese fijnstraal ;
Biological type: Annual
.
- Cotyledons elongate, spoonlike.
- Leaves entire, elliptical or ovate, entire-margined.
- Height: 40-80cm. Plant pubescent, hispid.
- Stem erect simple or branched.
- Basal leaves in rosette, ovate, stalked, the upper ones contracted in stalk, lanceolate, more dentate, short-haired, stiff and rare hairs on the margin of the blade and the stalk. Leaves sessile in the half-height and in the upper part.
- Flowers yellow in the centre, outer ones white gathered in very short heads, 3-5 mm broad, numerous (more than 100) gathered in a terminal compact and branched panicle.
- Fruits : seeds of 1 mm long, with a dirty-white pappus 3-times longer than the fruit.
- Triazine resistant populations in France, Switzerland, Germany, Great-Britain, Poland, Rumania, Hungary, Denmark and the former Yugoslavia and Czechoslovakia. Paraquat resistant populations in Hungary and Japan. Resistant populations to linuron in Hungary. The entire plant is used against diarrhoea, disentery and dropsy.
- Biological type: annual.
Mistake with: Conyza albida
Ecological profile (click on flags):
Present
Present
Present
Present
Present
Present
Present
