Euphrosyne acerosa

Copperwort, Copperwort

Family: Asteraceae · Type: annual · Native

Conservation status: CNPS 4.2

Copperwort is a California native annual found in northern Mojave Desert regions on wet or seasonally wet, alkaline soils at elevations below 700 meters. Flowering from June to October, this plant produces delicate white or pale yellow flowers in small, tight clusters with heads approximately 4 to 5 millimeters wide. Growing with slender, +- green stems that reach 10 to 30 centimeters tall, it develops distinctive pinnately lobed leaves with 3 to 7 linear to thread-like segments. Its leaves are generally 1 to 1.5 millimeters wide, silky-hairy, and have a somewhat thick texture that gives the plant a distinctive silvery-green appearance. The fruit is plump and smooth, measuring 1.5 to 2.5 millimeters long.

Habitat: Wet or seasonally wet, alkaline soils

Bloom period: Jun-Oct

Elevation: < 700 m

Bioregions: n DMoj (exc DMtns)

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Jepson eFlora, Cal-IPC, and more.