28 July 2009.
Iowa, United States
Locality: Along the Winnebago River, NW 1/4 of SE 1/4 of NE 1/4 of Section 34, T96N, R19W, Claybanks Forest, approximately 4.5 miles southwest of Nora Springs, Cerro Gordo County.
Coordinates: 43.0931, -93.0664
(Map it)
Elevation: 327m.
Georeference protocol: Lat/lon determined by GPS
Environment description: Rocky limestone. 70% slope, north facing.
Number of plants sampled: 17
Associated species: Campanula americana, Carpinus caroliniana, Cornus amomum subsp. obliqua, C. racemosa, C. rugosa, C. sericea, Fraxinus nigra, Lonicera reticulata, L. tatarica, Ostrya virginiana, Physocarpus opulifolius, Populus tremuloides, Prunella vulgaris, Prunus virginiana, Pycnanthemum virginianum, Quercus macrocarpa, Rhus glabra, Rubus idaeus var. strigosus, Rudbeckia hirta, Salix bebbiana, Sambucus canadensis, Securigera varia, and Tilia americana.
Comment: Population of >75 covering an area 50 yards x 20 yards. Plants fairly clean of canker and anthracnose. Some leaf damage due to powdery mildew.
Collector(s):