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

Bayer Code : gaete

Scientific name: Galeopsis tetrahit L.

Synonym(s) of Sc. name:

Classification: Labiatae, Dicotyledonous

Common name: common hemp-nettle

Synonym(s) of Common name:

Name per country: DE : Gemeiner Hohlzahn ; ES : ortiga real ; FR : ortie royale ; IT : canapetta comune ; PT : galeopse ; EN : common hemp-nettle ; NL : gewone hennepnetel ; DK : almindelig hanekro

Biological type: Annual

Seed snapshot Seed:

.

Seedling snapshot Seedling:

- Cotyledons auriculate.

- Leaves entire, elliptic-ovate, regularly toothed.

Adult plant snapshot Adult plant snapshot Adult plant:

- Height: 20-80 cm.

- Stem 4-angled, swollen just below the nodes, stiffly hairy, rough and downward hairs.

- Leaves opposite, pinnately veind. Long-haired petioles. Black-headed glandular hairy. Leaves ovate, lengthened, 30-80 x 15-50 mm, smooth-hairy on both sides, with irregular-toothed margin.

- Flowers crimson, yellow-blotched, small in many-flowered axillary pseudo-whorls. Calyx campanulate spiny-toothed. Corolla pink to blue-purple, white tube 14-20 mm long. Upper lip helmet-shaped, erect. Lower lip 3-lobed, median lobe entire.

- Fruit : 4-achene, ovoid, dull, as broad as long: 3 mm x 2 mm.

- Biological type: Annual.

Ecological profile (click on flags): BeneLux   Present     Germany  Present     Denmark  Present     Spain  Rare     France  Present     Great Britain  Present     Italy  Present    

Return INRA  Return INRA-Dijon  Return Weed Science & Agronomy Unit  Return HYPP-A

Copyright © 2000-2001 INRA, all rights reserved ; J.-P. Lonchamp, Nov. 2000
http://www.dijon.inra.fr/bga/hyppa/hyppa-a/gaete_ah.htm ,