When a fruit is not available, two species can be differentiated based on the leaf scars, or the place where the leaf meets the stem : butternut has a leaf scar with a flat upper edge and with a velvety ridge above that flat part, but black walnut has an indented leaf scar with no hairy ridge.
22.
When a fruit is not available, two species can be differentiated based on the leaf scars, or the place where the leaf meets the stem : butternut has a leaf scar with a flat upper edge and with a velvety ridge above that flat part, but black walnut has an indented leaf scar with no hairy ridge.
23.
When a fruit is not available, two species can be differentiated based on the leaf scars, or the place where the leaf meets the stem : butternut has a leaf scar with a flat upper edge and with a velvety ridge above that flat part, but black walnut has an indented leaf scar with no hairy ridge.
