Published online by Cambridge University Press: 31 May 2012
In April of last year I found on the banks of the Ottawa River, at Como, Province of Quebec, a number of very fine stems of a species of Golden-rod. These stems were bare and dry, and bleached by the winter storms. Their attraction for me lay in this—nearly every one of them was burdened with a fine large Trypeta-gall. On some of them two such galls were to be seen.