- the uppermost layer of foliage in a forest, forming the canopy.
Origin of overstory
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for overstory
The dominant and codominant plants in the overstory (trees or shrubs) were noted at each station.
Artemisia tridentata and Artemisia nova form the overstory in unit F and part of G.
The trapping areas in the first three mentioned had heavy growths of grass and an overstory of shrubs.