13 September 2003.
Iowa, United States
Locality: Malanaphy Springs State Preserve, northwest of Decorah, SW 1/4 of NE 1/4 of Section 31, T99N, R8W, Decorah Quad, Winneshiek County.
Coordinates: 43.3503, -91.8350
(Map it)
Elevation: 293m.
Georeference protocol: Lat/Lon determined via Map location
Environment description: Shaded. 25% slope with a northwestern aspect. Organic soil in eroding limestone with high stoniness, well to good drainage. Associated with black maple, elm, alternate leaved dogwood, Hepatica, and Aquilegia.
Comment: Locally abundant population (but may be just a limited number of clones) with uniform distribution.
Collector(s):