Borodinia laevigata (Muhlenberg ex Willdenow) P.J. Alexander & Windham. Common Smooth Rockcress. Phen: Apr-May; May-Jun. Hab: Rocky woodlands and forests, rock outcrops, especially mafic or calcareous, but also on more acidic substrates, rarely also in bottomlands. Dist: ME west to MN and SD, south to GA, AL, MS, AR, OK, and CO.
ID notes:Of our Borodinia, B. laevigata is the most common, being the least limited to calcareous substrates.
Origin/Endemic status: Native
Synonymy: = K3, K4, NY, Alexander et al (2013); = Arabis laevigata (Muhl. ex Willd.) Poir. var. laevigata – C, F, G, K1, Pa, W, Al-Shehbaz (1988a), Hopkins (1937), Rollins (1993), Wieboldt (1987); = Boechera laevigata (Muhl. ex Willd.) Al-Shehbaz – Ar, FNA7, Il, Mi, NE, Tn, Va; >< Arabis burkii (Porter) Small – S, misapplied in part; < Arabis laevigata (Muhl. ex Willd.) Poir. – GrPl; > Arabis laevigata (Muhl. ex Willd.) Poir. – S; > Arabis laevigata (Muhl. ex Willd.) Poir. var. burkii Porter – RAB, misapplied; > Arabis laevigata (Muhl. ex Willd.) Poir. var. laevigata – RAB; < Boechera laevigata (Muhl. ex Willd.) Al-Shehbaz – Al-Shehbaz (2003)
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