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

Bayer Code : epiad

Scientific name: Epilobium tetragonum L.

Synonym(s) of Sc. name:

Classification: Onagraceae, Dicotyledonous

Common name: square-stalked willowherb

Synonym(s) of Common name:

Name per country: DE : Vierkantiges Weidenröschen ; ES : epibolio de 4 lados ; FR : épilobe à 4 angles ; IT : garofanino quadrelletto ; PT : erva-bonita ; EN : square-stalked willowherb ; NL : bleke basterdwederik ;

Biological type: Perennial

Seed snapshot Seed:


Seedling snapshotSeedling snapshot Seedling:

- Cotyledons spoon-like.

- Leaves entire, elliptic or ovate, entire-margined.

Adult plant snapshotAdult plant snapshot Adult plant:

- Height: 30-90 cm.

- Stem tall usually many-branched, red-tinged, 4 angled, glabrous.

- Leaves lower obovate in rosette ; upper leaves lanceolate, opposite, denticulate, shining light-green, 20-80 x 5-20 mm, sessile, tapered into a long point, margin with very closed teeth.

- Flower pink, very small (4-6 mm), with long reddish ovary and globose stigma. Flowers erect in lengthened panicle, slightly exceeding the calyx.

- Fruits hairy. Seeds 1-1.5 mm, obovate, long-haired.

- Plant ornamental used for clumps and rock gardens, very melliferous; used as counter-irritant, resolutive and astringent. Populations exist which are resistant to triazines in France and Germany.

- Biological type: Perennial.

Ecological profile (click on flags): BeneLux   Present     Germany  Rare     Spain  Rare     France  Present     Great Britain  Rare     Italy  Present     Portugal  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/epiad_ah.htm ,