<i>Myrothecium roridum</i> Leaf Spot and Stem Canker on Watermelon in the Southern Great Plains: Possible Factors for Its Outbreak

Fig. 4. Concentric pattern of sporodochia of Myrothecium roridum formed on PDA agar after 14 days.



Image from Plant Health Progress article:
Myrothecium roridum Leaf Spot and Stem Canker on Watermelon in the Southern Great Plains: Possible Factors for Its Outbreak