Oxalis micrantha

Dwarf wood-sorrel

Family: Oxalidaceae · Type: annual · Not Native

Dwarf wood-sorrel is a naturalized annual herb found in foothill woodlands, rock outcrops, and disturbed sites across the Sierra Nevada Foothills, central Coast Ranges, and central Coast in areas below 1,000 meters elevation. Flowering from April to May, this plant produces small yellow flowers less than 12 millimeters long in compact clusters of 6 to 14 blooms. Growing with delicate erect stems under 20 centimeters tall and covered in sparse hairs, it forms a slender, fibrous-rooted annual. Its leaves have small leaflets less than 13 millimeters long with scattered hairs and petioles under 5 centimeters in length. The fruit is small, less than 5 millimeters long, and ovoid to nearly spherical in shape.

Habitat: Foothill woodland, rock outcrops, disturbed sites

Bloom period: Apr-May

Elevation: < 1000 m

Bioregions: SNF, ScV, CCo

California counties: Sacramento, Fresno, Marin, Calaveras, Madera, Napa, Tuolumne, San Mateo, San Luis Obispo, Monterey, San Diego, Stanislaus, San Joaquin

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