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Arabis mcdonaldiana
Also called Mcdonald's Rockcress, Macdonald's Rockcress
Arabis mcdonaldiana is a species of flowering plant in the mustard family known by the common name McDonald's rockcress. It is native to northern California and Oregon, where it grows on newly exposed, barren serpentine soils in openings in temperate coniferous forest habitat. It is a rare and endangered plant known from several sites in California and approximately two occurrences in Oregon, where it is threatened mainly by mining, particularly of nickel, which is one of several metals plentiful in the serpentine. On September 29, 1978, this was the second plant to be federally listed as an endangered species.
Waldo rockcress · Arabis allionii · Alpine rockcress · Armenian Rock-Cress · Annual Rockcress · Rose rockcress · Gray Rockcress · Arabis cypria · Gray Rockcress · Hairy rockcress · Kazbegian Rock-cress · Troodos rockcress
Text excerpted from the Wikipedia article Arabis mcdonaldiana by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
