Two-rowed Stickseed
EN

Two-rowed Stickseed

Lappula squarrosa

Unknown

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

Overview

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

Two-rowed Stickseed faces severe population declines primarily due to agricultural intensification and habitat conversion across its native range in western North America. The species' specialized requirements for disturbed alkaline soils make it particularly vulnerable to changes in land management practices. Competition from invasive plant species and altered fire regimes have further reduced suitable habitat availability.

Threat summary

Habitat

Two-rowed Stickseed inhabits dry, disturbed alkaline soils in sagebrush steppe, grasslands, and open woodlands of western North America. The species typically occurs in areas with sparse vegetation cover and requires specific soil chemistry conditions for successful establishment and reproduction.

TERRESTRIAL· majorTERRESTRIAL· majorTERRESTRIAL· major

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Frequently asked questions

Why is Two-rowed Stickseed classified as Endangered?
Two-rowed Stickseed 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. Two-rowed Stickseed faces severe population declines primarily due to agricultural intensification and habitat conversion across its native range in western North America. The species' specialized requirements for disturbed alkaline soils make it particularly vulnerable to changes in land management practices. Competition from invasive plant species and altered fire regimes have further reduced suitable habitat availability.
Where does Two-rowed Stickseed live?
Two-rowed Stickseed 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 Two-rowed Stickseed?
The main threats to Two-rowed Stickseed 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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