12 August 2011.
Kentucky, United States
Locality: McCreary Co. Along the Big South Fork river, S of the Roring Paunch.
Environment description: Sandbars and alluvial snady soils, in shade to full sun; Phlox paniculata, Physostegia virginiana var. praemorsa, Symphyotrichum prenanthoides, Trauvetteria carolinensis.
Comment: Number of plants found >10,000.
Collector(s):