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

Bayer Code : anois

Scientific name: Dichanthium ischaemum (L.) Roberty


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


Seedling:

- 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.


Adult plant snapshot Adult plant:

- 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): France   Rare     Italy  Rare      

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