PROTECTION STATUS: Threatened
YEAR LISTED: 1998
CRITICAL HABITAT: 2,947 acres in Los Angeles, San Bernardino, Riverside, Orange and San Diego countiesdesignated in 2011
RECOVERY PLAN: None
RANGE: California’s Los Angeles, San Bernardino, San Diego, Orange, and Riverside counties
THREATS: Habitat destruction from urban and agricultural sprawl, wetland alteration, trampling, and competition from nonnative species
POPULATION TREND: The thread-leaved brodiaea remains below ground for most of the year, and only a portion of any population flowers during any given year, making actual population numbers difficult to determine. Current figures range from 25 populations (according to the California Department of Fish and Game) to 84 populations (according to the Carlsbad Fish and Wildlife Office). All sources agree, however, that the plant’s populations are in significant decline.