<i>Geosmithia morbida</i>, Thousand Cankers Disease of Black Walnut Pathogen, Was Found for the First Time in Southwestern Ohio

Fig. 2 (D). Lower surface of a G. morbida colony after 35 days on ¼ PDA++. Bar = 25 mm.



Image from Plant Health Progress article:
Geosmithia morbida, Thousand Cankers Disease of Black Walnut Pathogen, Was Found for the First Time in Southwestern Ohio