Marsh Fleawort
CR

Marsh Fleawort

Tephroseris palustris

Unknown

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Tephroseris_palustris

Overview

Tephroseris palustris, also known by its common names swamp ragwort, northern swamp groundsel, marsh fleabane, marsh fleawort, clustered marsh ragwort and mastodon flower, a herbaceous species of the family Asteraceae. It can be seen most easily when its bright yellow umbel flowers appear from May to early July standing 3 to 4 feet along marshes, stream banks and slough areas where it likes to grow.

Marsh Fleawort faces severe decline primarily due to habitat loss and degradation of its specialized wetland environments. Agricultural intensification, drainage of marshlands, and changes in water management have eliminated much of its suitable habitat across its limited range. The species' highly specific ecological requirements make it particularly vulnerable to environmental changes and human disturbance.

Threat summary

Habitat

Tephroseris palustris grows in areas that have freezing winters and in moist to wet soils, such as damp meadows, swamps, sandy pond edges at altitudes of 0 to :America ::North America: Alaska, Iowa, Michigan, Minnesota, North Dakota, South Dakota, Wisconsin, British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, Quebec, New Brunswick, Nova Scotia, Prince Edward Island, Newfoundland and...

TERRESTRIAL· majorTERRESTRIAL· major

Frequently asked questions

Why is Marsh Fleawort classified as Critically Endangered?
Marsh Fleawort is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Marsh Fleawort faces severe decline primarily due to habitat loss and degradation of its specialized wetland environments. Agricultural intensification, drainage of marshlands, and changes in water management have eliminated much of its suitable habitat across its limited range. The species' highly specific ecological requirements make it particularly vulnerable to environmental changes and human disturbance.
Where does Marsh Fleawort live?
Marsh Fleawort occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Marsh Fleawort?
The main threats to Marsh Fleawort are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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