[Members of the Sunflower Family in the Columbia River Gorge with Discoid Flower Heads]
Beggar Ticks of the Columbia River Gorge with Discoid Flower Heads

The Genus Bidens

Leafy Beggar Ticks: Bidens frondosa

Nodding Beggar Ticks: Bidens cernua - Rays generally present and conspicuous.

Leafy Beggar Ticks: Bidens frondosa - Rays absent or inconspicuous. Leaves pinnately compound. Disk flowers orangish. 5-8 outer involucral bracts.

Tall Beggar Ticks, Western Sticktight: Bidens vulgata - Rays absent or inconspicuous. Leaves pinnately compound. Disk flowers yellowish. 10-15 outer involucral bracts.

Paul Slichter E-mail