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Fagaceae
Quercus

not marked as a favorite taxon Quercus rubra Linnaeus var. borealis (F. Michaux) Farwell. Common name: Gray Oak. Phenology: May; Sep-Oct (of the second year). Habitat: Forests on ridges, slopes, and coves, in the Southern Appalachians mostly at over 1000 meters elevation. Distribution: Fairly widespread in ne. North America south to Pennsylvania, and in the Appalachians to w. North Carolina, nw. South Carolina, and n. Georgia.

Glossary (beta!)

Subgenus: Quercus. Section: Lobatae. Subsection: Coccineae.

Origin/Endemic status: Native

Taxonomy Comments: This and var. rubra tend to intergrade and their distinction as even varieties may not be warranted. For discussion of the two varieties, see McDougal & Parks (1984) and Jensen (1977). There has been confusion and disagreement over the varietal name to apply, if they are recognized as here; var. borealis (F. Michaux) Farwell 1904 has priority over var. ambigua (A. Gray) Fernald 1908.

Synonymy ⓘ: = F, FNA3, RAB, WV, not formally treated; = Quercus borealis F.Michx. — S; = Quercus borealis F.Michx. var. borealis — G, GrPl; = Quercus rubra L. var. ambigua (A.Gray) Fernald — K1, Mi, NS; < Quercus rubra L. — C, Can, Chap, FNA3, Il, K4, Mo3, NE, NY, Pa, POWO, S13, Tat, Tn, Va, W. Basionym: Quercus borealis F.Michx. 1817

Links to other floras: < Quercus rubra - FNA3; = Quercus rubra var. borealis - FNA3

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Wetland Indicator Status:

  • 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 ⓘ: 4

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image #1 of Quercus rubra var. borealis© Alan Weakley source
image #2 of Quercus rubra var. borealis© Alan Weakley source
image #3 of Quercus rubra var. borealis© Alan Weakley source
image #4 of Quercus rubra var. borealis© Alan Weakley source

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Horticultural Information

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