Weed Science & Agronomy
INRA-Dijon
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Unité de Malherbologie & Agronomie Weed Science & Agronomy INRA-Dijon |
Bayer Code : bidau
Synonym(s) of Sc. name: Bidens heterophylla Ortega
Classification: Compositae, Dicotyledonous
Common name: beggarticks or bur-marigold
Synonym(s) of Common name:
Name per country : DE : Goldener Zweizahn ; ES : té moruno ; FR : bident doré ; IT : forbicina lineare ; PT : chá-de-Marrocos ; EN : beggarticks or bur-marigold ;
Biological type: Annual, Perennial
- Plant propagates generally vegetatively (rhizomes ). Establishment from seedling is rare. Shoots with opposite leaves.
- Height: 50-80 cm.
- Stem erect.
- Leaves glabrous, linear, lanceolate or deeply divided in linear lobes, roughly and irregularly dentate.
- Flowers ligulate, yellow (5-6) purple striated, 10-30 cm long, gathered in heads. Involucral bracts of the same length. The external non foliaceous. Calyx scales as long as achenes.
- Fruits : achenes 4-7 mm long, finely tuberculate with 2 (scarcely 3 or 4 ) awns 1.5 to 2.7 mm long.
- Plant native to Central America, introduced in France in South West and Var. Ornamental plant, with decorative flowers. Rare in crops.
- Biological type: annual to perennial.
Ecological profile (click on flags):
Rare
Rare
Rare
