Meaning of stripe smut

stripe' smut"

Pronunciation: [key]
— Plant Pathol. Plant Pathol.
  1. a disease of grasses, characterized by stripes of black spores on the leaves, caused by any of several smut fungi of the genera Urocystis and Ustilago.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.