Weed Science & Agronomy
INRA-Dijon
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Unité de Malherbologie & Agronomie Weed Science & Agronomy INRA-Dijon |
Bayer Code : anois
Synonym(s) of Sc. name: Andropogon ischaemum L.
Classification: Gramineae, Monocotyledonous
Common name: Dichanthium ischaemum
Synonym(s) of Common name:
Name per country: DE : Bartgras ; FR : barbon ischème ; IT : barboncino digitato ;
Biological type: Perennial with rhizomes
- Plant propagates overall vegetatively (buds on rhizomatous stolons ); establishment from seedling is rare.
- Shoot rolled, leaf sheath terete.
- Leaf blade 20-50 times longer than broad, leaf more or less hairy.
- Ligule surrounded with a ring of hairs, auricles absent.
- Height: 30-80cm. Plant tufted.
- Stem erect. Culm with brownish nodes.
- Leaves glaucous linear, canaliculate, long-haired at the base, hairy above.
- Inflorescence crimson, of 5-12 digitate spikelets, fascicled, hairy and silky. Spikelets in pairs, one stalked and awnless, the other fertile and sessile.
- Fruit : caryopsis compound with the entire fertile spikelet bearing 2 rachillas (one of these is the peduncle of the raceme and the other is the sterile peduncle).
- This plant is used as hemostatic. Brushes of couchgrass and brooms are made of the roots. Rare in crops. This plant is protected in Auvergne (decree 30/03/90), Corsica (decree 24/06/86), and Poitou-Charentes (decree 19/04/88).
- Risk of confusion with Dichanthium saccharoides (Swartz) R.
- Biological type: Perennial with rhizomes.
Mistake with: Dichanthium saccharoides
Ecological profile (click on flags):
Rare
Rare
