Hyphal growth of Verticillium dahliae in a small peppermint root, as seen with a fluorescence microscope at 20X.

Fine, bright lines of hyphae in root under fluorescence microscrope. Credit: Fred J. Crowe
Hyphal growth of Verticillium dahliae in a small peppermint root, as seen with a fluorescence microscope at 20X. Credit: Fred J. Crowe