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Two main opposing forces affect a tree's height; one pushes it upward while the other holds it down. By analyzing the interplay between these forces in coast redwoods (Sequoia sempervirens), a team of biologists led by George Koch of Northern Arizona University calculated the theoretical maximum tree height or the point at which opposing forces balance out and a tree stops growing.
It is a tree growing up to 85 feet (25 meters) tall, with dark brown bark. It has leaves with sharp pointed lobes somewhat similar to those of the Georgia oak (Q. georgiana) and pin oak (Q. palustris). [7] It is fast-growing and usually has a pleasing red color in autumn, much more reliably so than the pin oak.
Quercus tarahumara is a tree up to 10 meters (33 feet) tall. The leaves are rather large for the genus, up to 30 centimeters (1 ft) across, with the stiffness of cardboard, green on top but tan on the underside. It is sometimes called the "handbasin oak" because its size and shape suggest a bathroom sink. [5]
Quercus serrata is a deciduous oak tree reaching a height of 25 metres (82 feet) occupying elevations from 100–2,000 m (330–6,560 ft). The bark is gray or reddish-brown with longitudinal furrows. [5]
The tree has a girth of 14.02 metres (46.0 ft) measured at 1.5 metres (4 ft 11 in) off the ground, making it the UK's largest and widest tree since the collapse of the Newland Oak in Gloucestershire, [1] [2] [3] surpassing trees such as the Bowthorpe Oak in Lincolnshire and the three large sweet chestnut trees at Canford School, Dorset. [3]
Quercus macranthera, commonly called the Caucasian oak, or the Persian oak, is a species of deciduous tree native to Western Asia (northern Iran, Turkey; and in the Caucasus in Georgia, Armenia, and Azerbaijan) [2] that is occasionally grown as an ornamental tree in Europe growing to 30 metres (98 feet) tall. [3] It is placed in section Quercus ...
Quercus macrocarpa, the bur oak or burr oak, is a species of oak tree native to eastern North America. It is in the white oak section, Quercus sect. Quercus , and is also called mossycup oak , mossycup white oak , blue oak , or scrub oak .
Quercus gravesii (also called Chisos red oak or Grave's oak) is an uncommon North American species of oak in the red oak section Quercus section Lobatae. It is found in Mexico and the United States. It is a deciduous tree up to 13 metres (43 feet) tall. The leaves are hairless, each with 3–5 pointed and awned lobes.