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Solidago rigida Linnaeus. Midwestern Bold Goldenrod. Phen: Aug-Oct. Hab: Glades, barrens, and prairie-like areas, over mafic or calcareous rocks. Dist: RI and MA west to NY, s. ON, MI, WI, s. MN and c. NE, south to c. VA, sc. NC, w. NC, sc. TN, c. AR, and se. TX. East of MI, IN, IL, MO, and OK, Solidago rigida is generally rare and restricted to relictual prairie-like situations. Reports of S. rigida in the Coastal Plain of MS and AL are based on S. jacksonii.

Origin/Endemic status: Native

Taxonomy Comments: This taxon is tetraploid (2n=36) through most of its range, with a few diploids reported for OK.

Synonymy: = Oligoneuron rigidum (L.) Small; = Oligoneuron rigidum (L.) Small var. rigidum – Il, K1, NE, Nesom (1993b); = Solidago rigida L. ssp. rigida – Ar, FNA20, K3, K4, Mo2, Tn, Heard & Semple (1988); = Solidago rigida L. var. rigida – C, G, GrPl, NY, SE1, Va; < Oligoneuron grandiflorus (Raf.) Small; < Solidago rigida L. – F, Mi, NcTx, Oh3, Pa, RAB, Tx, W, Johnson (1995); < Solidago rigida L. var. grandiflorus – S

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image of plant© Gary P. Fleming
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Aidan Campos source
image of plant© Gary P. Fleming | Original Image ⭷