Hypericum harperi R. Keller. Harper's St. John's-wort. Phen: Jul-Sep. Hab: Clay-based Carolina bays, other upland depression ponds, with Taxodium ascendens. Dist: E. and c. SC south to sw. GA and e. Panhandle FL and se. AL.

Origin/Endemic status: Endemic

Taxonomy Comments: H. harperi should be sought in sc. and se. NC, where it may well occur. This species has generally been considered a part of H. denticulatum or H. virgatum, but Webb (1980) makes a convincing argument for its recognition, including the ecological differentiation and absence of intermediates or hybrids when growing in proximity to H. denticulatum. See H. virgatum for additional discussion.

Synonymy: = Fl2, FNA6, K3, K4, WH3, Allison (2011), Robson (2006); < Hypericum acutifolium Elliott – S; < Hypericum denticulatum Walter – GW2; < Hypericum denticulatum Walter var. acutifolium (Elliott) Blake – RAB, Adams (1973); < Hypericum harperi R.Keller – K1

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