Publications for:

pest = Golovinomyces cichoracearum
crop = Echinacea (genus)

found 2 publications:

2018

Powdery mildew caused by Golovinomyces cichoracearum on eastern purple coneflower (Echinacea purpurea) in Italy
Plant Disease (2018) 102 (5), p.1028
publishers website - pestinfo wiki

1999

First report of powdery mildew, caused by Erysiphe cichoracearum, on coneflowers
Plant Disease (1999) 83 (7), p. 694
publishers website - pestinfo wiki