This section is from the book "The Gardener's Monthly And Horticulturist V18", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
At the meeting of the American Pomological Society at Chicago, the editor of this magazine was called on somewhat unexpectedly to deliver an address on fungi and fruit diseases. Without notes or memoranda, he stated that the peculiar black fungus, which develops on the leaves of Prince's St. Germain and some other pears, finally leading to that peculiar form of cracking, might be from some one of the polymorphic forms of Roestelia cancel-lata, the fungus which causes the leaf blight in young seedling pears. It appears, however, to be another kind, with the rather hard name of Hel-minthosporum pyrorum. As Mr. Meehan's remarks may be reported by the secretary for the proceedings, this correction may be made in the volume by those who are interested.