Helianthus porteri (A. Gray) Pruski. Confederate Daisy. Phen: Aug-Sep. Hab: In shallow soils over granite on low-elevation granite domes or flatrocks. Dist: A Piedmont endemic: nw. SC south to GA and ec. AL
Origin/Endemic status: Endemic
Other Comments: The species has often been treated in Viguiera; see Pruski (1998) and Schilling et al. (1998) for discussion of the reasons for treating this species in Helianthus. It is well-established at two sites in NC, on Rocky Face Mountain (Alexander County, NC) and Mitchell Mill Flatrock (Wake County, NC), where it was introduced with soil blocks of Diamorpha smallii as part of a ecological experiment (Mellinger 1972; McCormick & Platt 1964); it is now aggressively weedy at these sites.
Synonymy: = FNA21, K1, K3, K4; = n/a – RAB; = Viguiera porteri (A.Gray) Blake – S, SE1
Heliophily: 9
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© Alan M. Cressler | Original Image ⭷
© Alan M. Cressler | Original Image ⭷
© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
© Alan Cressler: Helianthus porteri, Stone Mountain, Stone Mountain Park, DeKalb County, Georgia 11 by Alan Cressler source | Original Image ⭷
© Alan Cressler: Helianthus porteri, Stone Mountain, Stone Mountain Park, Dekalb County, Georgia 3 by Alan Cressler source | Original Image ⭷
© Alan M. Cressler | Original Image ⭷
© Alan Cressler: Helianthus porteri, Stone Mountain, Stone Mountian Park, DeKalb County, Georgia 3 by Alan Cressler source | Original Image ⭷Feedback
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