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Linum sulcatum Riddell. Grooved Yellow Flax. Phen: May-Oct. Hab: Prairies; eastwards in dry rocky woodlands, barrens, and blackland prairies over calcareous, mafic, or ultramafic rocks (and sometimes also weedy in adjacent disturbed areas). Dist: Primarily a species of the Great Plains of WI, MN, and s. ON, s. MB, WI, MN, and ND, to LA and TX, L. sulcatum occurs farther east (to MA, VA, NC, and AL) as a rare disjunct on glades or barrens over rocks such as limestone or diabase.

Origin/Endemic status: Native

Synonymy: = Ar, C, F, FNA12, G, GrPl, Il, Mi, NcTx, NY, Pa, RAB, Tn, Tx, Va, W, WV; = Cathartolinum sulcatum (Riddell) Small – S, S13; = Linum sulcatum Riddell var. sulcatum – K1, K3, K4, NE, Rogers (1963), Rogers (1984); = Mesynium sulcatum (Riddell) Á.Löve & D.Löve

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Heliophily ?: 8

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image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Paul Marcum source | Original Image ⭷
image of plant© Paul Marcum source | Original Image ⭷
image of plant© Joey Shaw source | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Joey Shaw source | Original Image ⭷
image of plant© Aidan Campos source | Original Image ⭷

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