Locality:
United States, California, Santa Clara, Foothills near Stanford University
37.36237 -122.18101 +-12433m. WGS84
Habitat:
Leaves
Occurrence Remarks:
So little is known of the development of the American Melampsorae on Populus that the nomenclature is only provisional, but I am rather inclined to think that this is the teleutosporic condition of M. Tremulae Tul."