Cirsium davisianum
Overview
A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.
Cirsium davisianum faces severe threats from habitat destruction due to urban development and agricultural expansion in its limited range. The species is particularly vulnerable to invasive plant species that outcompete it for resources and alter soil conditions. Climate change poses an additional threat through altered precipitation patterns and increased drought frequency in its specialized habitat.
Habitat
This critically endangered thistle species occupies specialized serpentine soils in chaparral and oak woodland habitats of California. It requires specific soil chemistry and moisture conditions found only in limited areas of its native range.
