Bidens tripartita

Threelobe beggarticks

Family: Asteraceae · Type: annual · Not Native

Threelobe beggarticks is a naturalized annual found in central Sierra Nevada and Great Valley bioregions in freshwater wetlands at elevations of 50 to 1,600 meters. Flowering from July to August, this plant produces yellow-brown disk flowers in heads approximately 2 centimeters wide with distinctive spreading outer phyllaries. Growing with erect glabrous stems 40 to 150 centimeters tall, it develops a robust upright structure. Its leaves are simple and petioled, with lanceolate blades up to 20 centimeters long that have serrated edges. The fruit is a distinctive wedge-shaped structure with 2 to 3 angled surfaces bearing small ascending and reflexed barbs.

Habitat: Freshwater wetlands

Bloom period: Jul-Aug

Elevation: 50-1600 m

Bioregions: c SNH, GV

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