Arabis patens Sullivant. Spreading Rockcress. Phen: May-Jun; Jun-Aug. Hab: Thin soils around calcareous or dolomitic outcrops, very rarely in nutrient-rich seepage from mafic rocks. Dist: Irregularly distributed, primarily in the sedimentary rock Appalachians, from se. PA, c. PA, and IN south to NC, e. TN, and AL. In NC, this species occurs over marble at Blowing Spring, Nantahala River Gorge, Swain County, at various sites over calcareous sedimentary rocks in the Hot Springs Window, near Hot Springs, Madison County, and in nutrient-rich seepage from amphibolite at Chimney Rock, Rutherford County.
Origin/Endemic status: Endemic
Syn: = C, F, FNA7, G, K1, K3, K4, Pa, RAB, S, Va, W, Al-Shehbaz (1988a), Hopkins (1937), Rollins (1993); = Boechera patens (Sull.) Al-Shehbaz – K2, Tn, Al-Shehbaz (2003)