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Crocanthemum bicknellii (Fernald) Janchen. Hoary Frostweed, Plains Frostweed, Plains Sunrose, Bicknell's Hoary Rockrose. Phen: Jun-Jul (chasm.), Jul-Sep (cleist.); Aug-Oct. Hab: Woodlands, glades, barrens, rock outcrops, grassy balds, serpentine grasslands, to at least 1500m in elevation. Dist: ME and s. ON west to MN and s. MB, south to ne. GA, e. TN, AR, KS, and CO.

Origin/Endemic status: Native

Synonymy: = Ar, FNA6, K3, K4, Mi, NE, NY, S, Va; = Helianthemum bicknellii Fernald – C, F, G, GrPl, Il, K1, Pa, RAB, Tn, W, Daoud & Wilbur (1965), Wilbur & Daoud (1964)

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image of plant© Brandon Corder source | Original Image ⭷

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