Formerly frequent to common in the southern counties, now almost extinct. It no doubt covered the southern third of the state. There are reports from as far north as Bartholomew and Franklin Counties and Ridgway says: "Fully 90 per cent of the white elm trees in the White and Wabash Rivers bottoms are affected by this parasite. I saw it on no other species except honey locust and elm." The more common hosts, however, include Acer rubrum, Acer saccharinum, Gleditsia triacanthos, Juglans nigra, Nyssa sylvatica, Quercus palustris, and Ulmus americana. I have noted walnut trees almost killed by it in both Perry and Posey Counties. In 1934 I saw a large specimen growing on a very large native elm tree in the yard of J. F. Schmid in sec. 18 of Spencer Twp. in Jennings County. It was growing so high that I was unable to secure a specimen.