Related Clues:
- Tanbark source
- Drug-yielding plant
- Aster family perennial
- Yellow-flowered plant, usually
- Purgative pod
- Ragwort plant
- 1990-91 Formula One champion
- Three-time Formula One racing champ Ayrton __
- Yellow-flowered perennial
- Member of the aster family
- Buttonlike bloom
- Yellow-flowered herb
- Three-time Formula One racing champ Ayrton
- Plant used medicinally
- Bruise treatment