Quercus boyntonii Beadle
Boynton sand post oak, Boynton oak
Fagaceae (Beech Family)
Synonym(s): Quercus stellata var. boyntonii
USDA Symbol: QUBO2
Boynton oak is a semi-evergreen deciduous or rhizomatous shrub, which grows to a height of 6 1⁄2 feet (2 m), occasionally to a height of 19 feet (5.8 m). BARK: brown and scaly. TWIGS and BUDS: light brown pubescent twigs; reddish-brown buds, ovoid with a rounded apex and sparsely pubescent scales. LEAVES: petiole up to 3⁄8 inch (10 mm) long; obovate or narrowly obovate leaves, up to 4 inches (101 mm) long and 2 3⁄8 inches (60 mm) wide, base is cuneate; margin with 3 - 5 irregularly rounded lobes; apex triangular-lobed; shiny dark green above, grayish pubescence beneath.
Boynton oak is rare and rated as endangered by the IUCN. The Texas distribution record is questionable and may have resulted from taxonomic confusion associated with early collections.
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Plant CharacteristicsDuration: Perennial
Habit: Shrub , Tree
Leaf Retention: Deciduous , Semi-evergreen
Leaf Arrangement: Alternate
Leaf Complexity: Simple
Leaf Shape: Obovate
Leaf Venation: Pinnate
Leaf Margin: Lobed
Leaf Base: Cuneate
Breeding System: Flowers Unisexual , Monoecious
Fruit Type: Nut
Fruit: Acorns annual; 1 - 2 acorns on a peduncle up to 3⁄8 inch (10 mm) long, pubescent gray cup covers up to 1⁄2 of the nut; light brown, ovoid nut with rounded tip, up to 5⁄8 inch (16 mm) in length.
Size Class: 3-6 ft. , 12-36 ft.
Bloom InformationBloom Color: Green
Bloom Time: Mar , Apr , May
Native Distribution: Rare with a restricted occurrence in Alabama and Texas; found on the summit of Lookout Mountain, Etowah County, Alabama.
Native Habitat: Localized occurrence associated with sandstone outcrops.
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Mt. Cuba Center - Hockessin, DE
BibliographyBibref 766 - Dale Groom's Texas Gardening Guide (2002) Groom, D.
Bibref 1134 - Field Guide to Native Oak Species of Eastern North America (2003) Stein, John D. and Denise Binion
Bibref 297 - Trees of Central Texas (1984) Vines, Robert A.
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Additional resourcesUSDA: Find Quercus boyntonii in USDA Plants
FNA: Find Quercus boyntonii in the Flora of North America (if available)
Google: Search Google for Quercus boyntonii
MetadataRecord Modified: 2011-09-25
Research By: TWC Staff