Shale barren rock cress, more...
Freely branched, the infl a panicle with numerous ±pendulous fls; lvs without auricles, but often soon deciduous; cal short, mostly 2-3 mm; frs 4-8 cm, straight or nearly so; 2n=14; otherwise much like no. 6. Shale-barrens of Va. and W.Va. July-Aug, well after no. 6 [Arabis laevigata (Muhl.) Poir.].
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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