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The leaves have a very distinctive shape, with three perpendicular terminal lobes, shaped much like a Maltese cross. They are leathery, and tomentose (densely short-hairy) beneath. The branching pattern of this tree often gives it a rugged appearance. The acorns are 1.5–2 cm (5 ⁄ 8 – 3 ⁄ 4 in) long, and are mature in their first summer. [4]
Gould's Ecoregions of Texas (1960). [1] These regions approximately correspond to the EPA's level 3 ecoregions. [2] The following is a list of widely known trees and shrubs found in Texas. [3] [4] [5] Taxonomic families for the following trees and shrubs are listed in alphabetical order by family. [6]
Quercus buckleyi, commonly known as Texas red oak, Buckley's oak, or Spanish oak [4] [5] is a species of flowering plant. [6] [7] It is endemic to the southern Great Plains of the United States (Oklahoma and Texas). [8] Buckley's oak is smaller and more likely to be multitrunked than its close relative, the Shumard oak (Q. shumardii).
It is a perennial herbaceous plant growing 35–100 centimetres (14–39 inches) tall with unbranched stems. The simple, broadly lanceolate leaves are produced in opposite pairs. Each leaf ranges between 2–12 cm (1–5 in) long and 1–5 cm (1 ⁄ 2 –2 in) across. The bright red flowers are produced in clusters of 10-50 together.
Quercus marilandica is a small deciduous tree growing to 15 meters (49 feet) tall, with bark cracked into rectangular black plates with narrow orange fissures. The leaves are 7–20 centimeters (3–8 inches) long and broad, and typically flare from a tapered base to a broad three-lobed bell shape with only shallow indentations.
The leaves of the black oak are alternately arranged on the twig and are 10–20 cm (4–8 in) long with 5–7 bristle-tipped lobes separated by deep U-shaped notches. The upper surface of the leaf is a shiny deep green, and the lower is yellowish-brown. There are also stellate hairs on the underside of the leaf that grow in clumps. [5]
The leaves are very variable in shape, most frequently narrowly oval or ovate-lanceolate, 4–8 centimetres (1 + 1 ⁄ 2 –3 inches) long (rarely to 10 cm long), 2–5 cm wide (rarely to 8 cm wide), rounded or broadly tapered at the base, pointed, the margins usually entire on mature trees, or (especially on young trees) more or less spiny ...
Anacua is a partial evergreen, replacing some of the leaves in early spring. Abundant white flowers [2] form in panicles or cymes [6] 5–7.5 cm (2.0–3.0 in) in length at the ends of twigs, [5] making trees appear to be covered in snow when in bloom from spring to summer. [2] Flowers are 8 mm (0.31 in) wide and have 5 corolla lobes.