A phylogenetically distinct lineage of associated with chlorotic leaf spot of Brassicaceae in North America.

Light leaf spot, caused by the ascomycete , is an established disease of Brassicaceae in the United Kingdom (UK), continental Europe, and Oceania (OC, including New Zealand and Australia). The disease was reported in North America (NA) for the first time in 2014 on spp. in the Willamette Valley of western Oregon, followed by detection in cover crops and on weeds in northwestern Washington in 2016.