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Helianthus smithiorum Heiser. Smith's Sunflower. Phen: Aug-Sep. Hab: Dry forests and woodlands. Dist: Known from n. GA, e. AL, and se. TN.

ID notes: H. smithiorum has small heads (like H. microcephalus, H. laevigatus, H. schweinitzii), the leaves narrowly lanceolate and subsessile (like H. schweinitzii or H. laevigatus), the leaves resin-dotted below (like H. microcephalus), but nearly glabrous. It may be a hybrid derivative of H. microcephalus and H. strumosus.

Origin/Endemic status: Endemic

Taxonomy Comments: The epithet must be corrected to "smithiorum", as Heiser intended it to commemorate two Smiths.

Synonymy: = Helianthus smithii Heiser – FNA21, K1, K3, K4, Tn, correctable error; = n/a – RAB; < Helianthus microcephalus Torr. & A.Gray – C, SE1

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Wetland Indicator Status:

  • Eastern Mountains and Piedmont: UPL (taxonomic split from wetland indicator species)
  • Great Plains: UPL (taxonomic split from wetland indicator species)
  • Midwest: FACU (taxonomic split from wetland indicator species)
  • Northcentral & Northeast: FACU (taxonomic split from wetland indicator species)

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image of plant© Alan Cressler: Helianthus smithii, Pine Log Wildlife Management Area, Bartow County, Georgia 3 by Alan Cressler source | Original Image ⭷

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