McDonald's rock-cress (?)

April 6, 2022 • Illinois River Trail, Rogue River-Siskiyou National Forest • Josephine County, Oregon

Coordinates: 42.37891,-123.81745
McDonald's rock-cress (?) (Arabis mcdonaldiana) [Illinois River Trail, Rogue River-Siskiyou National Forest, Josephine County, Oregon]
Filename: 20220406-140446.jpg 2730x4095 pixels, ISO 200, f6.3 @ 1/1000 sec
Arabis mcdonaldiana

Some botanists think that Arabis mcdonaldiana only grows in Mendocino County, and that the ones along the Illinois River are either a hybrid of Arabis aculeata and Arabis modesta, or a new species altogether.

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