Article · Wikipedia archive · Last revised Jun 24, 2026

Jacobaea aquatica

Jacobaea aquatica or Senecio aquaticus, the water ragwort or marsh ragwort, is a plant of the family Asteraceae. It is a perennial or biennial plant: young plants form a rosette near the ground, eventually producing a taller flowering shoot with many bright yellow flower heads, each with prominent ray florets. It grows in damp, grazed grassland, especially where there has been some disturbance.

Last revised
Jun 24, 2026
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≈ 1 min
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Jacobaea aquatica
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Embryophytes
Clade: Tracheophytes
Clade: Spermatophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Jacobaea
Species:
J. aquatica
Binomial name
Jacobaea aquatica
(Hill) G.Gaertn., B.Mey. & Scherb.
Synonyms
  • Senecio aquaticus Hill
  • Senecio jacobaea subsp. barbareifolius Krock.
  • Senecio pratensis Richt.

Jacobaea aquatica or Senecio aquaticus, the water ragwort1 or marsh ragwort,2 is a plant of the family Asteraceae. It is a perennial or biennial plant: young plants form a rosette near the ground, eventually producing a taller flowering shoot with many bright yellow flower heads, each with prominent ray florets. It grows in damp, grazed grassland, especially where there has been some disturbance.

Biogeography

Jacobaea aquatica is endemic to Europe. It may be found throughout the continent, except Finland and Eastern Europe. There are small populations in the European part of Turkey and on Svalbard.

References

References

  1. NRCS. "Senecio aquaticus". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 9 November 2015.
  2. BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.