A celery plant with dark brown, water-soaked, roots and brownish discoloration in vascular tissue of the basal stem, root crown, and taproot due to Fusarium yellows, <i>Fusarium oxysporum</i> f. sp. <i>apii</i>. For size comparison a 1 cent coin is placed next to the roots.
A celery plant with dark brown, water-soaked, roots and brownish discoloration in vascular tissue of the basal stem, root crown, and taproot due to Fusarium yellows, Fusarium oxysporum f. sp. apii. For size comparison a 1 cent coin is placed next to the roots.
Credit: R. Michael Davis