Jagged Chickweed
EN

Jagged Chickweed

Holosteum umbellatum

Unknown

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

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

The Umbellate Jagged Chickweed faces severe population decline primarily due to agricultural intensification and habitat conversion across its European range. Traditional extensive farming practices that once maintained suitable open grassland habitats have been replaced by intensive agriculture, eliminating the disturbed soil conditions this annual species requires for germination. Urban development and infrastructure expansion have further fragmented remaining populations, while changes in grazing patterns have altered the competitive dynamics of its grassland ecosystems.

Threat summary

Habitat

This annual herb inhabits open, disturbed grasslands, field margins, and sandy soils across temperate European regions. It thrives in areas with periodic soil disturbance and reduced vegetation competition, particularly in traditional extensive agricultural landscapes and coastal dune systems.

TERRESTRIAL· majorTERRESTRIAL· major

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Frequently asked questions

Why is Jagged Chickweed classified as Endangered?
Jagged Chickweed is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. The Umbellate Jagged Chickweed faces severe population decline primarily due to agricultural intensification and habitat conversion across its European range. Traditional extensive farming practices that once maintained suitable open grassland habitats have been replaced by intensive agriculture, eliminating the disturbed soil conditions this annual species requires for germination. Urban development and infrastructure expansion have further fragmented remaining populations, while changes in grazing patterns have altered the competitive dynamics of its grassland ecosystems.
Where does Jagged Chickweed live?
Jagged Chickweed 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 Jagged Chickweed?
The main threats to Jagged Chickweed 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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