This small black patch was seen on the forest floor in early October in southern Vermont. What is it, and what helped cause it?
Answer
Sooty mold on the leaf litter under a beech tree. Above this spot, a branch of the beech is infested with beech blight aphid. The aphids suck the sap but they can’t process all of it and the excess “honeydew” drips down and supports the growth of the sooty mold.
This week’s contest winner was Peter Rzasa of Seymour, CT