Floodplain below has successional or planted white pine. Side slope to NW there is another small opening at about the same elevation.;Steep shale slope with SW aspect above an undercutting stream. Community is a small opening with small pines surrounded by white pine - oak forest with taller trees and closed canopy. Herb layer includes shale barren endemics. Arabis serotina is in an open microsite. White pine may be encroaching barren.
Representativeness
Plot includes entire shale barren patch with Arabis serotina - to characterize habitat for species. This plot may represent marginal habitat, only one to a few plants present at sampling date.