<i>Cladosporium herbarum</i> Causes a Leaf Spot on Marshmarigold in Western North America

Fig. 1. Caltha leptosepala ssp. howellii collected in the Gospel Hump Wilderness, ID, displaying lesions from which Cladosporium herbarum was isolated.



Image from Plant Health Progress article:
Cladosporium herbarum Causes a Leaf Spot on Marshmarigold in Western North America