The plot is in the middle of the Stone Ridge Ranch on the west bank of the main creek running through the property, about 300 m north of the large equipment barn on Bechtel's headquarters. The plot is in a small stand (less than 100 square meters sized patches) of Selaginella hansenii and native forb vegetation that is associated with the bedrock outcrops along this perennial (?) creek.; The ranch is grazed once a year in late spring, light impact.