Related Clues:
- 1990-91 World Grand Prix champion
- Medicinal plant
- Medicinal herb
- Cathartic drug
- Medicine-yielding legume
- Yellow-flowered plant
- Drug-yielding shrub
- Tanbark source
- Drug-yielding plant
- Yellow-flowered plant, usually
- Purgative pod
- 1990-91 Formula One champion
- Three-time Formula One racing champ Ayrton __
- Three-time Formula One racing champ Ayrton
- Plant used medicinally