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Viola stoneana House. Section: Nosphinium. Subsection: Borealiamericanae. Stone's Violet. Phen: Apr-Jul. Hab: Moist loam of rich mesic forest slopes and bases of slopes. Dist: Local along and near the "fall line" between the upper Atlantic Coastal Plain and the lower Piedmont, se. NY to c. VA; disjunct in ec. NC.

Origin/Endemic status: Endemic

Taxonomy Comments: Although most taxonomists have followed Russell (1965) in treating Viola stoneana House as a hybrid, studies have shown it to be distinct, fully fertile, and inhabiting a quite different rich mesic forest habitat with a regionally endemic distribution; it is treated separately here.

Synonymy: = F, G, Tat, Ballard, Kartesz, & Nishino (2023); < Viola palmata L. var. palmata – FNA6, K3, K4, RAB; < Viola subsinuata Greene – Pa

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Wetland Indicator Status:

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

Heliophily: 3

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image of plant© Izabella Farr, some rights reserved (CC BY-NC), uploaded by Izabella Farr source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Izabella Farr, some rights reserved (CC BY-NC), uploaded by Izabella Farr source CC-BY-NC, permission granted to NCBG

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