Solidago mexicana Linnaeus. Subgenus: Pleiactila. Section: Maritimae. Southern Seaside Goldenrod. Phen: Late Aug-Jan (and year-round southwards). Hab: Coastal dunes, dune slacks, maritime wet grasslands, tidal marshes. Dist: E. MA south to s. FL, west and south to TX and Mexico (TAB, TAM, VER); West Indies.

Origin/Endemic status: Native

Taxonomy Comments: This diploid species (2n=18) warrants distinction at specific rank from S. sempervirens.

Synonymy ⓘ: = K4, NY, S, Semple et al (2016a); = Solidago sempervirens L. ssp. mexicana (L.) Semple – FNA20, Semple (2003); = Solidago sempervirens L. var. mexicana (L.) Fernald – C, F, G, GW2, Il, K1, K3, NE, SE1, Tx, Va, Johnson (1995); < Solidago sempervirens L. – Bah, Mex, RAB, Tat, WH3

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FACW (taxonomic split from wetland indicator species)
• Great Plains: FACW (taxonomic split from wetland indicator species)
• Midwest: FACW (taxonomic split from wetland indicator species)
• Northcentral & Northeast: FACW (taxonomic split from wetland indicator species)

Heliophily ⓘ: 8