Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Fabids: Fagales
Genus: Quercus
Subgenus: Quercus
Section: Quercus (white oaks)
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Quercus austrina
FAMILY
Fagaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Normally one must looks at a number of leaves on a given tree to be sure you have this rare species; simply looking at one or two leaves is typically not enough to be certain. Read more at Vascular Plants of North Carolina website.
Aside from the nomenclatural issues, the illustrations and descriptions of these three oaks in Sargent’s Manual of the Trees of North America (2nd edition) represent the first time that accurate representation of the Durand oak, Bigelow oak and bluff oaks, as they are recognized today, appeared in print.... Read more in Revisiting the Taxonomic and Nomenclatural Problems of the Quercus sinuata Complex.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Quercus austrina
FAMILY
Fagaceae
SYNONYMOUS WITH Flora of North America
Quercus austrina
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 055-03-004:
Quercus austrina FAMILY Fagaceae
INCLUDED WITHIN Manual of the Southeastern Flora (Small, 1933, 1938)
Quercus alba
COMMON NAME:
Bluff Oak, Bastard Oak
To see larger pictures, click or hover over the thumbnails.
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Manual of the Trees of North America (Exclusive of Mexico) (Sargent, 1905) mtna_i_332
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Ron Lance rwl_Qaustrina_AltamahaRGA
September GA
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Ron Lance rwl_Qaustrina_MagSprsGA
September GA
Magnolia Springs State Park
Leaves of mature wood 6-19 cm long [vs. those of Durand oak 4-10cm, Bigelow oak 3-6cm], per Revisiting the Taxonomic and Nomenclatural Problems of the Quercus sinuata Walter Complex (Lance, 2022).
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Ron Lance rwl_QaustrinaAltamahaRGA
September GA
)
Ron Lance rwl_QaustrinaAltamahaRGAb
September GA
)
Ron Lance rwl_QaustrinaMagSprsGA
September GA
Magnolia Springs State Park
)
Ron Lance rwl_Qaustrina_WakullaSprs
October Wakulla County FL
Lvs of mature wood usually w 1-3 short, symmetrical lobes per side, abaxially green, glabrous, per Revisiting the Taxonomic and Nomenclatural Problems of the Quercus sinuata Walter Complex (Lance, 2022).
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Ron Lance rwl_QaustrinaWakullaSprsF
October Wakulla County FL
Nut ovoid, 12-20mm; cup turbinate, cupule rim tight against nut, scales thin, appressed, per Revisiting the Taxonomic and Nomenclatural Problems of the Quercus sinuata Walter Complex (Lance, 2022).
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Ron Lance rwl_bluffoak_GainesvFL
November Alachua County FL
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Ron Lance rwl_QaustrinaGA
November GA
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Quercus austrina
FAMILY
Fagaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Quercus austrina
FAMILY
Fagaceae
SYNONYMOUS WITH
Flora of North America
Quercus austrina
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 055-03-004:
Quercus austrina
FAMILY
Fagaceae
INCLUDED WITHIN
Manual of the Southeastern Flora (Small, 1933, 1938)
Quercus alba
2584
Tree
Perennial
Monoecious
Habitat: River bluffs, mesic hammocks, dry hammocks, natural levees of brownwater rivers, over mafic rocks, on shell or calcareous sediments, per Weakley's Flora
Native to the Carolinas & Georgia
Rare
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
LEAVES:
Deciduous
Simple
Alternate, 5-ranked
FLOWER:
Spring
Staminate calyx 2-8 lobed, pistillate calyx 6-lobed
Petals absent
3-12 stamens in staminate flowers
Unisexual
Staminate flowers in clustered drooping catkins
FRUIT:
Fall
Acorn
TO LEARN MORE about this plant, look it up in a good book!
- Guide to the Wildflowers of SC, 2nd ed. (McMillan, Porcher, Rayner, & White; 2022) p423
- Field Guide to Native Oak Species of Eastern North America (Stein, Binion, & Acciavatti, 2003) p012
- Native Trees of the Southeast, An Identification Guide (Kirkman, Brown, & Leopold, 2007) p165
- Trees of the Southeastern United States (Duncan & Duncan, 1988) p276
- Woody Plants of the Southeastern US: A Winter Guide (Lance, 2004) p266
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