Ranunculus orthorhynchus var. platyphyllus

Bloomer's buttercup

Family: Ranunculaceae · Type: perennial · Native

Bloomer's buttercup is a California native perennial found in northwestern California, central coast, San Francisco Bay Area, Cascade Range, and Central Valley in meadows and marshy areas at elevations up to 2,100 meters. Flowering from March to July, this plant produces bright yellow flowers with rounded petals 7 to 11 millimeters wide. Growing with delicate stems and a compact growth habit, it develops distinctive basal leaves divided into 3 to 5 leaflets with narrow, toothed segments. Its leaves are uniquely shaped, ranging from ovate to semicircular, with leaflet segments that are narrowly elliptic to linear, creating an intricate botanical pattern. The fruit develops with a short beak 2 to 3 millimeters long, forming a small spheric or ovoid aggregate.

Habitat: Meadows, marshy areas

Bloom period: Mar-Jul

Elevation: < 2100 m

Bioregions: NW, CCo, SnFrB, CaR, GV

California counties: Sonoma, Humboldt, Mendocino, Marin, Glenn

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