Research by Susan Brawley, a professor of plant biology at the University of Maine, was cited in the Kennebec Journal’s latest Backyard Naturalist column, “Remembering the invasive periwinkles.” Periwinkles belong to a class of mollusks with spiral shells. They have soft bodies and a head inside the permanent univalve shell, as opposed to bivalves such read more Brawley’s periwinkle research cited in Kennebec Journal column