Wood floors require large amounts of moisture present for several days before mold can grow. After small water damage most people attempt to dry the wood floor and assume all is well; however after a few days discoloration or visible mold will appear and grow on the edges of the flooring.
Mold on wood floors is always worse than what you can see visually. Wood floors retain moisture underneath between flooring, underlay and substrate creating large amounts of humidity and fungal growth. The longer it is undetected, the larger the mold growth on the wood floor.
Do not attempt to remove the mold on the flooring yourself before consulting with a professional. We can detect the extent with simple moisture readings or thermal imaging.