Quercus arkansana Sarg.
Fagaceae (Beech Family)
Synonym(s): Quercus caput-rivuli
USDA Symbol: QUAR2
Medium sized tree with a narrow crown, growing to 95 feet (28.9 m). Bark is black with deep furrows, inner bark orangish-red. TWIGS and BUDS are brown twigs with gray pubescence and prominent yellowish-brown lenticels; chestnut-brown, ovoid buds with slightly ciliate scale margins. Leaves obovate shape, 2 - 6 inches (51 - 152 mm) long, 1 3⁄8 - 4 inches (35 - 101 mm) wide; margin entire with 3 lobes and up to 10 bristle tips, shallow sinuses with rounded lobes; smooth and yellowish-green above, paler green with axillary tufts of pubescence beneath.
The Latin and common names are derived from its initial discovery in Arkansas. The IUCN considers Arkansas oak rare in Arkansas, endangered in Florida, and vulnerable in Alabama, Georgia, and Louisiana. The largest known Arkansas oak grows in Covington County, Mississippi.
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Plant CharacteristicsDuration: Perennial
Leaf Arrangement: Alternate
Leaf Complexity: Simple
Leaf Shape: Obovate
Leaf Venation: Pinnate
Leaf Margin: Entire
Breeding System: Flowers Unisexual , Monoecious
Fruit Type: Nut
Fruit: Acorns biennial; thin, brown, goblet-shaped cup with pubescent scales, inner surface sparse to conspicuously pubescent, covers 1⁄4 - 1⁄2 of the nut; elliptical nut 5⁄8 inch (16 mm) long, mature nut is brown to black with faint stripes.
Size Class: 72-100 ft.
Bloom InformationBloom Color: Brown
Bloom Time: Mar , Apr , May
DistributionUSA: AL , AR , FL , GA , LA , MS , TX
Native Distribution: Arkansas and Louisiana east to Georgia and Florida.
Native Habitat: Occurs sporadically on well- drained sandy soils in hardwood stands.
Find Seed or Plants
Find seed sources for this species at the Native Seed Network.
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Native Seed Network - Corvallis, OR
BibliographyBibref 1134 - Field Guide to Native Oak Species of Eastern North America (2003) Stein, John D. and Denise Binion
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Additional resourcesUSDA: Find Quercus arkansana in USDA Plants
FNA: Find Quercus arkansana in the Flora of North America (if available)
Google: Search Google for Quercus arkansana
MetadataRecord Modified: 2011-09-25
Research By: DEW