Quercus austrina
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| Scientific classification Edit this classification | |
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| Natural range for Quercus austrina | |
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Quercus austrina, the bastard white oak[3][4] or bluff oak,[4] is an oak species that is endemic to the Coastal Plain of the southeastern United States from Mississippi to South Carolina;[4][5][6] previously reported populations in Arkansas and North Carolina were misidentifications.[7]
Quercus austrina can grow to a height of 45 to 60 feet (13.5–18 meters) with a spread of 35 to 50 feet (10.5–15 m). Leaves are narrow, with shallow rounded lobes. It tends to grow in wet habitats, such as on river bluffs, river bottoms, and flatwoods, and generally over basic substrates, such as mafic rocks, shells, or calcareous sediment.[5][7]
Quercus austrina specimens have often been misidentified as either Q. sinuata or Q. nigra.[5]
Quercus austrina is tolerant to clay, sand, loam, acidic, and well-drained soils. Also, it requires a lot of sun and its drought tolerance is high.[8]
National champion
The largest known bluff oak in the United States appeared on the National Register of Champion Trees in 2015. Located in Wakulla, Florida, the national champion specimen of Quercus austrina was nominated in 2009 by George Apthorp and crowned on September 1, 2015. It was last measured in 2014. By that time, the champion tree had attained a trunk circumference of 10 ft 8 in (3.25 m), a height of 129 ft (39 m) and a crown spread of 70 feet.[9] The American Forests formula for assigning point scores to nominated trees is trunk circumference (in inches) + height (in feet) + Page Template:Fraction/styles.css has no content.1⁄4 average crown spread (in feet), resulted in an overall score of 275 points.
References
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- ^ Script error: No such module "template wrapper". Note that this website has been superseded by World Flora Online
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- ^ a b c Page Module:Citation/CS1/styles.css has no content.Kirkman, L. Katherine; Brown, Claud L.; Leopold, Donald J. (2007). "Quercus austrina Small". Native Trees of the Southeast. Portland, OR: Timber Press. p. 165. ISBN 978-0-88192-828-0.
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- ^ a b Page Module:Citation/CS1/styles.css has no content."Flora of the Southern and Mid-Atlantic States by Alan S. Weakley". 2025. Retrieved 25 April 2026.
- ^ Page Module:Citation/CS1/styles.css has no content.Edward F. Gilman, Dennis G. Watson (2019-04-11). "Quercus austrina: Bluff Oak". edis.ifas.ufl.edu. Retrieved 2019-10-17.
- ^ Page Module:Citation/CS1/styles.css has no content."Bluff Oak (Quercus austrina)". American Forests. 2016-09-15. Retrieved 2021-03-22.
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