Solidago altissima Linnaeus var. altissima . Tall Goldenrod. Phen: Aug-Oct. Hab: Fields, roadsides, disturbed areas. Dist: NS, QC, and SK south to n. GA, n. AL, n. MS, AR, and e. OK; introduced in w. North America.

Origin/Endemic status: Native

Taxonomy Comments: Semple (2022) reports tetraploid (2n=36) and hexaploid (2n=54) counts for this variety, with most of its broad distribution hexaploid, and smaller zones of distribution of tetraploids centered in the Interior Highlands of AR and OK, and the ne. edge of our region, in NJ and se. NY.

Synonymy: = Il, K4, NY, Tx, Semple (2022), Semple et al (2015); < Solidago altissima L. – F, GW2, K1, Mi, Pa, RAB, Tn, WV, Johnson (1995); < Solidago altissima L. ssp. altissima – Ar, FNA20, K3, NE; < Solidago altissima L. var. altissima – Va; < Solidago canadensis L. – Oh3, W; < Solidago canadensis L. var. scabra Torr. & Gray – C, G, GrPl, NcTx, SE1, WH3; < Solidago hirsutissima Mill. – S

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