[Arabis arcuata var. subvillosa S. Watson, moreArabis columbiana Macoun, Arabis elegans A. Nelson, Arabis perelegans A. Nelson, Arabis sparsiflora var. columbiana (Macoun) Rollins, Arabis sparsiflora var. subvillosa (S. Watson) Rollins, Arabis subserrata Greene, Boechera sparsiflora var. subvillosa (S. Watson) Dorn]