|Locality:||United States. Kentucky. Clark: Abandoned limestone quarry- 0.9 mi. W of Jct. KY 1924 on KY 418 (Athens-Boonesboro Rd.)- adjacent to Kentucky River.
|Habitat:||Xeric quarry floor. Box elder-dogwood-poison ivy community. Associates: Typha latifolia- Glyceria striata- R. crispus- Rhus radicans.
|Collector:||Ralph L. Thompson 93-247
with A. Earl Shupe