Borodinia missouriensis (Greene) P.J. Alexander & Windham. Missouri Rockcress. Phen: Apr-May; May-Jun. Hab: Thin soil around outcrops of metamudstone, diabase, or granite (generally on ultramafic, mafic, or 'rich granitic' substrates). Dist: ME to WI, south to KY, AR, and OK; disjunct eastward in NC, SC, and GA. The distribution of this species is odd and fragmented.

Origin/Endemic status: Native

Synonymy ⓘ: = K3, K4, NY, Alexander et al (2013); = Arabis laevigata (Muhl. ex Willd.) Poir. var. missouriensis (Greene) Ahles – RAB; = Arabis missouriensis Greene – C, K1, Pa, Al-Shehbaz (1988a), Rollins (1993); = Boechera missouriensis (Greene) Al-Shehbaz – Ar, FNA7, Il, Mi, NE, Al-Shehbaz (2003); < Arabis laevigata (Muhl. ex Willd.) Poir. – S, S13; > Arabis laevigata (Muhl. ex Willd.) Poir. var. deamii M.Hopkins – F; > Arabis laevigata (Muhl. ex Willd.) Poir. var. missouriensis (Greene) Ahles – F; > Arabis viridis Harger var. viridis – G, Hopkins (1937)

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Heliophily ⓘ: 8