Flora of the Southeastern United States

Hypericum mitchellianum Rydberg. Common name: Blue Ridge St. John’s-wort. Phenology: Jul-Aug. Habitat: Grassy balds, grassy openings, forests, seepages, at moderate to high elevations (generally at 1000-1900 m or more). Distribution: W. VA, e. WV, and e. TN south to sw. NC, a Southern Appalachian endemic.

Origin/Endemic status: Endemic

Taxonomy Comments: Robson (2006) interpreted this as a hybrid of H. graveolens and H. punctatum but offered no evidence other than its general morphological intermediacy. It also has a wider distribution than one of its alleged parents, H. graveolens, and thus is acting as an independent evolutionary entity, regardless of its origin.

Synonymy ⓘ: = C, F, G, GW2, K4, NS, RAB, S, Tn, Va, W, WV, Adams (1973); = Hypericum ×mitchellianum Rydb. (pro sp.) — FNA6, POWO, Robson (2006); < Hypericum graveolens Buckley — S13. Basionym: Hypericum mitchellianum Rydb. 1927

Links to other floras: = Hypericum ×mitchellianum - FNA6

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Wetland Indicator Status:

• Eastern Mountains and Piedmont: FACU

Heliophily ⓘ: 7