Fen ragwort  (Senecio paludosus)

Fen ragworts in flower

Facts

Kingdom Plantae
Phylum Anthophyta
Class Magnoliopsida
Order Asterales
Family Asteraceae
Genus Senecio (7)
Size Height: up to 200 cm (1)

Status

Listed as Critically Endangered on the UK Red List (3), and fully protected under Schedule 8 of the Wildlife and Countryside Act, 1981 (2).

Description

This fenland plant is one of England's rarest wild plants (5). It can grow up to 2 meters in height, produces many large yellow daisy-like blooms, and has large leaves with saw-toothed margins (4).

Range

This species was once known from Cambridgeshire, Norfolk, Suffolk and Lincolnshire. It was first recorded in England in 1660 (4), and by 1857 it was believed to have become extinct in the UK, until in 1972 (4) a single plant was re-discovered in Cambridgeshire (5). It has since been reintroduced to five sites in its former range, including Wicken Fen National Nature Reserve (1) and Flag Fen in Peterborough (5).

Habitat

Inhabits damp habitats such as fenland, marshes (1) and wet ditches (6).

Biology

Unlike other ragworts, fen ragwort is not an invasive species (1). It is a perennial plant (5) that can withstand flooding for up to six months (6).

Threats

The cause of the decline of this species is due to the widespread drainage of fenland habitats and their conversion to arable land (5).

Conservation

Fen ragwort was one of the first plants to be included in English Nature's Species Recovery Programme (5). This programme is funding the conservation of the species in collaboration with Anglian Water. Measures that have been taken to help the species escape extinction in the UK include reintroductions to former sites, and research into the ecological requirements of the plant, carried out by the Institute of Terrestrial Ecology (1). A nursery has been established for rearing plantlets, grown from the seeds of the last remaining plant (5), and populations are carefully monitored (6). The fen ragwort is fully protected under the Wildlife and Countryside Act of 1981 (2).

Further Information

For more information on English Nature's Species Recovery Programme see:
http://www.english-nature.org.uk

Authentication

Information authenticated by Plantlife, the wild plant conservation charity:
http://www.plantlife.org.uk

Perennial: plants that live for at least three seasons; after an initial period they produce flowers once a year.

References

  1. Wicken Fen (March 2002):
    www.demon.co.uk/ecoln/wicken_fen/sprecov.html#Senecio
  2. JNCC (March 2002):
    www.jncc.gov.uk/species/protect/plants.htm
  3. JNCC (March 2002):
    www.jncc.gov.uk/species/pstatus/p2_1.htm
  4. Mabey, R. (1996). Flora Britannica. Sinclair-Stevenson, London
  5. English Nature (March 2003):
    www.english-nature.org.uk/news/story.asp?ID=284
  6. English Nature (March 2003):
    www.english-nature.org.uk/science/srp/fen_ragwort.htm
  7. Hilton-Taylor, C. (compiler) 2000. 2000 IUCN Red List of Threatened Species. IUCN, Gland, Switzerland and Cambridge, UK. xviii + 61pp. Downloaded on 21 March 2002.
    http://www.redlist.org/search/details.php?species=33728
  8. Preston, C. D., Pearman, D. A., Dines, T. D. (2002) New Atlas of the Flora of Britain and Ireland. Oxford University Press, London.