Coast Microseris (Microseris bigelovii) COSEWIC assessment and status report: chapter 10
Existing Protection or Other Status Designations
Microseris bigelovii is not covered under the Convention on International Trade in Endangered Species (CITES), the Endangered Species Act (USA) or the IUCN Red Data Book. NatureServe globally ranks it as G4: apparently secure.
The Washington State Natural Heritage Program ranks it as SX (extirpated) in their state. The Oregon Natural Heritage Information Centre ranks the species as S2 (imperiled). It appears to be secure in California.
In British Columbia, it is currently ranked as S1 (critically imperiled). It does not occur elsewhere in Canada. The British Columbia Conservation Data Centre also places it on the provincial red list of species that are provincially threatened or endangered. British Columbia does not provide any legal protection for M. bigelovii.
There is negligible possibility of immigration from extra-territorial populations because the closest locations are several hundred kilometres away in Oregon and the species lacks effective adaptations for substantial rates of long-term dispersal.