Arabis holboellii Hornem.
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Authority
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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Family
Brassicaceae
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Scientific Name
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Description
Species Description - Biennial or short-lived perennial 2–9 dm, densely pubescent with dendritically branched hairs, those of the stem appressed; basal lvs oblanceolate, 2–5 cm, the cauline lance-linear to oblong, 1–4 cm, usually erect, auriculate, mostly revolute-margined; pet pink to white, 7–10 mm; mature pedicels abruptly deflexed at base, 6–15 mm; frs pendent, 3–8 cm × 1–2 mm, the valves 1-nerved below the middle; seeds in 1 row, suborbicular, 1 mm; 2n=14, 21, 28, 35, 42. Dry rocky or gravelly soil; Greenl. to Alas., s. to Que., n. Mich., Colo., and Calif. June, July. Our plants, as here described, are var. retrofracta (Graham) Rydb., a chiefly cordilleran phase that also occurs in n. Mich.