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: 5
Associated species: Campanula americana, Carpinus caroliniana, Cornus alternifolia, C. amomum subsp. obliqua, C. racemosa, 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 approximately 8 covering an area 50 yards x 20 yards. Some plants were re-blooming. Potential hybridization with other Cornus sp. Noted potential hybrids growing next to C. rugosa.
Collector(s):