Quercus lyrata Walt.

  • Family: Fagaceae (oaks and beeches)
  • Common names: overcup oak, swamp post oak, swamp white oak

    Tree to 25 m (80 ft) tall and 0.6 m (2 ft) diameter, with rounded crown. Bark light gray, becoming furrowed into scaly plates and ridges. Twigs slender, gray, becoming glabrous, ending in a cluster of small blunt light-brown buds. Leaves alternate, obovate or oblong, with several rounded lobes, tapering to base, 13-20 cm (5-8 in) long and 4-10 cm (1.6-4 in) wide, shiny dark green above, usually gray-green below, turning red, yellow, or brown in fall. Fruits are acorns maturing in the first year, nearly round, 12-25 mm (0.5-1 in) in diameter, with a warty gray cup almost enclosing the whole acorn.

    Distribution: Native to the Coastal Plain and lower Mississippi Valley.
    Habitat: poorly-drained bottomland forests, usually in areas with standing water in Winter and Spring.
    Comment: The lumber is marketed as white oak. Quercus is the ancient classical name for the European oaks; lyrata refers to the somewhat lyre-shaped leaves.
    NWI status: OBL

    Distribution in Oklahoma:

    Last update: 9/16/99
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