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

Bayer Code : bidsu

Scientific name: Bidens subalternans A. P. de Candolle

Synonym(s) of Sc. name:

Classification: Compositae, Dicotyledonous

Common name: Bidens subalternans

Synonym(s) of Common name:

Name per country: DE : Subalterans-Zweizahn ; FR : bident à feuilles semi-alternes ; IT : forbicina subalterna ;

Biological type: Annual

Seed:

.

Seedling:

- Cotyledons linear ( 10 times longer than broad).

- Leaves entire deeply serrate.

Adult plant:

- Height:10-100 cm.

- Stem erect.

- Leaves pinnate with pinnatifid segments, more or less pubescent on the upper side and between the veins on the lower side.

- Flowers ligulate, yellow, in heads 5-10 mm diameter.

- Fruits : outer achenes (6-8 mm), inner achenes (8-14 mm) erect when mature.

- Native to South America. Rare in crops.

- Biological type: annual.

Ecological profile (click on flags):   Rare    

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