Bark removed to show stained cambium of a sycamore with sycamore canker, <i>Ceratocystis fimbriata</i> f. sp. <i>platani.</i>.
Bark removed to show stained cambium of a sycamore with sycamore canker, Ceratocystis fimbriata f. sp. platani..
Credit: Edward J. Perry