In a Nutshell:
* Quercus fusiformis (also often referred to as Q. virginiana var. fusiformis), commonly known as texas live oak, escarpment live oak, plateau live oak, or plateau oak, is an evergreen or nearly evergreen tree. Its native range includes the Quartz Mountains and Wichita Mountains in southwestern Oklahoma, through Texas, to the Mexican states of Coahuila, Tamaulipas, and Nuevo León.
* This live oak in the white oak section of the genus Quercus is distinguished from Quercus virginiana (southern live oak) most easily by the acorns, which are slightly larger and with a more pointed apex. It is also a smaller tree, not exceeding 1 m in trunk diameter (to 2.5 m diameter in southern live oak), with more erect branching and a less wide crown.
* Texas live oak is typically found on dry sites, unlike southern live oak, which prefers moister conditions. The tree is generally accepted to be the hardiest evergreen oak, able to withstand very cold winters with minimal leaf burn in areas as cold as USDA zone 6a. more...
* Plateau oak or Escarpment live oak is a thicket-forming shrub or large, spreading tree that is nearly identical in appearance to, and considered much hardier than, Q. virginiana.
* A short, tapering trunk supports picturesquely gnarled branches and limbs that over time will spread horizontally a great distance from the main trunk. It can reach a height of 20-40 ft.
* Leaves are evergreen, firm textured, ovate to elliptic, 1 to 3 inches long, usually without lobes except on young plants and rootsprouts, then with pointed lobes. The leaves are generally slightly smaller than those of Q. virginiana. Acorns 3/4 to 1 inch long, rather elongate. Unlike Coastal live oak, acorns are spindle-shaped (fusiform), narrowed at the base.
* It is more drought-tolerant and cold-hardy than Q. virginiana, which it is sometimes considered a variety of. Like Q. virginiana, its magnificent, stately form has endeared it to generations of residents and it remains popular to this day.
* The largest known Texas live oak grows in Real County, Texas. more...