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David J. Keil +
(Cronquist) D. J. Keil +
Cirsium davisii +
Davis’s thistle +
Idaho +, Nev. +, Utah +  and Wyo. +
1400–3100 m +
Arid slopes, roadsides, grasslands, sagebrush scrub, dry woodlands, montane forests +
Flowering summer (Jun–Aug). +
Asteraceae tribe Cynarea +
Cirsium inamoenum var. davisii +
Cirsium inamoenum +
variety +