Europe, Northern Europe, Western Europe, Asia, Central Asia, Western Asia
North America, United States, Northeastern United States, Mid-Atlantic United States, Southeastern United States, South-Central United States, Texas, Canada
Clay soil areas, Loamy soils, Sandy areas, sandy seeps, Well Drained
Mixed deciduous forest, shaded fields, shaded moist road banks, shaded riverbanks
A2, A3, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7