Borodinia burkii (Porter) P.J. Alexander & Windham. Burk's Smooth Rockcress. Phen: Apr-May. Hab: Limestone barrens, shale barrens, and other dry, rocky habitats. Dist: E. and c. PA south to e. WV, ne. TN, and w. NC in the sedimentary rock Appalachians. Radford, Ahles, & Bell (1968) attributed this plant (as Arabis laevigata var. burkii) to NC based on somewhat aberrant specimens from high elevation cove forests; these are better assigned to B. laevigata. Hopkins (1937), however, cites a specimen from Hot Springs, Madison County, NC, an area with plausible habitats (dry sedimentary rock woodlands, shale barrens).

Origin/Endemic status: Endemic

Synonymy: = K3, K4, Alexander et al (2013); = Arabis laevigata (Muhl. ex Willd.) Poir. var. burkii Porter – C, K1, Pa, W, Al-Shehbaz (1988a), Rollins (1993), Wieboldt (1987); = Boechera burkii (Porter) Windham & Al-Shehbaz – FNA7, K2, K4, Tn, Va; = n/a – RAB; < Arabis burkii (Porter) Small – S, misapplied in part; < Arabis laevigata (Muhl. ex Willd.) Poir. var. burkii Porter – F, G, Hopkins (1937); < Boechera laevigata (Muhl. ex Willd.) Al-Shehbaz – Al-Shehbaz (2003)

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