Synonyms: Quercus velutina var. missouriensis, Quercus leiodermis,
Local Names: Black oak, Yellow oak, Quercitron oak, Quercitron, Yellow-bark oak, Yellowbark oak, Yellow butt oak, Smooth-bark oak, Smoothbark oak
Acorn: Ovoid acorns, 1/2 to 3/4 inch long, 1/3 to 1/2 enclosed in a bowl-shaped cap; cap scales are loosely appressed (particularly loose on edges of cap), light brown and fuzzy, matures in 2 years in late summer and fall.
Leaves: Alternate, simple, 4 to 10 inches long, obovate or ovate in shape with 5 (mostly) to 7 bristle-tipped lobes; leaf shape is variable, with sun leaves having deep sinuses and shade leaves having very shallow sinuses, lustrous shiny green above, paler with a scruffy pubescence and axillary tufts below.
Range: Widely distributed throughout Eastern and Central United States and extreme Southwestern Ontario, Canada. In the United States, occurs from southwestern Maine west to southern Wisconsin and southeastern Minnesota; south through Iowa to eastern Nebraska, eastern Kansas, central Oklahoma, and eastern Texas; and east to northwestern Florida and Georgia
References: (1) (2) (3) (4)
Additional information and links on the genus Quercus:
Plants List: Quercus
Oaks of The World
Quercus images on Google
Oak images on Google
List of genus Quercus and subgenus Cyclobalanopsis
USDA Plant List: Search Page (Type Quercus)