Eriogonum umbellatum var. argus

One-eyed sulphur flower, One-Eyed Sulphur Flower

Family: Polygonaceae · Type: perennial · Native

One-eyed sulphur flower is a California native perennial found in the Klamath Ranges and north-central Coast Ranges in serpentine habitats at elevations of 1,500 to 2,200 meters. Flowering from June to September, this plant produces vibrant yellow flowers in delicate umbel-like clusters. Growing as a mat-forming plant up to 15 meters in diameter with stems 10 to 20 centimeters tall, it develops woolly or hairy stems often featuring a leaf-like bract near the middle. Its leaves are small, one to two centimeters long with wavy margins, tomentose on the undersides and varying from hairy to glabrous. The plant forms dense, low-growing mats characteristic of its serpentine habitat adaptation.

Habitat: Serpentine

Bloom period: Jun-Sep

Elevation: (900)1500-2200 m

Bioregions: KR, c NCoRH

California counties: Siskiyou, Trinity, Del Norte, Humboldt, Inyo, Tehama, Glenn, Shasta, El Dorado, Plumas

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