Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Fabids: Fagales
Genus: Quercus Subgenus: Quercus Section: Quercus (white oaks)
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 Flora of North America
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)
Bluff Oak, Bastard Oak
To see larger pictures, click or hover over the thumbnails.
Ron Lance rwl_Qaustrina_MagSprsGA
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).
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).
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).
Flora of North America
Manual of the Southeastern Flora (Small, 1933, 1938)
Native to the Carolinas & Georgia
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)
Staminate calyx 2-8 lobed, pistillate calyx 6-lobed
3-12 stamens in staminate flowers
Staminate flowers in clustered drooping catkins
TO LEARN MORE about this plant, look it up in a good book!
- 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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