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Betula lenta Linnaeus var. uber Ashe. Virginia Roundleaf Birch. Phen: May-Jun; Jul-Aug. Hab: Stony, alluvial soils of a mountain valley floodplain (endemic to Smyth County, VA). Dist: B. lenta var. uber is related very closely to B. lenta var. lenta, and is apparently endemic to Smyth County, VA.

Origin/Endemic status: Endemic

Taxonomy Comments: See Mazzeo (1974), Ogle & Mazzeo (1976), Hayden & Hayden (1984), McAllister & Ashburner (2004), and Ashburner & McAllister (2016) for additional information on this birch and its history. It does not breed "true" and should perhaps be considered a form of B. lenta.

Synonymy: = Va; = Betula lenta L. – Ashburner & McAllister (2016); = Betula lenta L. ssp. uber (Ashe) A.E.Murray; = Betula uber (Ashe) Fernald – F, FNA3, K1, K3, K4, W, Furlow (1990); = n/a – S, S13; < Betula lenta L. – C, G, Hardin (1971a)

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Wetland Indicator Status:

  • Eastern Mountains and Piedmont: 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© Gary P. Fleming | Original Image ⭷
image of plant© Gary P. Fleming
image of plant© Gary P. Fleming
image of plant© J.W. Hardin | Original Image ⭷

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