prairie coneflower

noun

: a plant of the genus Ratibida

especially : a rough perennial herb (R. columnifera or Lepachys columnifera or Obelisteca columnifera) with a yellow head of few rays but an elongated disk of tubular flowers

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now