Trifolium vesiculosum

Arrowleaf clover

Family: Fabaceae · Type: annual · Not Native

Arrowleaf clover is a naturalized annual found in coastal and central California regions including northern Coast Ranges, southern Sacramento Valley, central Coast, and San Francisco Bay Area in disturbed roadsides at elevations below 300 meters. Flowering from July to November, this plant produces pink to purple flowers in dense heads 4 to 6 centimeters long. Growing with erect or ascending stems 15 to 60 centimeters tall that are distinctly grooved, it has a robust and glabrous appearance. Its leaves have three leaflets that are 1.5 to 3 centimeters long, generally lanceolate to elliptic with distinctive bristle-like teeth along the margins. The flower heads are typically positioned above a pair of bract-like leaves, with calyx tubes marked by 24 prominent veins that connect laterally.

Habitat: Disturbed roadsides

Bloom period: Jul-Nov

Elevation: < 300 m

Bioregions: NCo, NCoRI, s ScV, CCo, SnFrB

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