Unité de Malherbologie & Agronomie
Weed Science & Agronomy
Bayer Code : equar
Synonym(s) of Sc. name:
Classification: Equisetaceae, Pteridophyte
Common name: field horsetail, marestails
Synonym(s) of Common name:
Name per country: DE : Acker-Schachtelhalm ; ES : cola de caballo ; FR : prêle des champs ; IT : coda cavallina ; PT : cavalinha-dos-campos ; EN : field horsetail, EN : marestails ; NL : heermoes ; DK : ager-padderok
Biological type: Perennial with rhizomes
- Plant propagates vegetativly by rhizomes [and small ovoid tubers ]; sporelings are rare.
- Height: 10 to 80 cm according to the nature of stems (fertile or sterile). Extensive underground rhizome systems giving two sorts of stems.
- Sterile stems from 20 to 80 cm, pale green, deeply grooved, whorls of slender branches at acute angles. Green leaf sheath with black teeth.
- Fertile stems from 10 to 30 cm, unbranched, smooth, reddish brown sheaths with up to 12 teeth, appearing before the sterile ones.
- Fruiting: spikes from 1 to 4 cm, oblong, brownish containing the sporangia.
- The plant is toxic, astringent, hemostatic, diuretic and rich in minerals. In the past used for polishing, because rich in silica.
- Biological type: Perennial with rhizomes.
Ecological profile (click on flags): Present Present Present Rare Present Present Present Present