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Wood ash from a campfire. Wood ash is the powdery residue remaining after the combustion of wood, such as burning wood in a fireplace, bonfire, or an industrial power plant.It is largely composed of calcium compounds, along with other non-combustible trace elements present in the wood, and has been used for many purposes throughout history.
Mountains of southern Arizona and New Mexico such as the Santa Catalina Mountains and the Chiricahua Mountains, for example, have a pine-oak woodland at an elevation of roughly 1,710–2,160 m (5,700 to 7,200 ft). Here, Q. hypoleucoides can be found as well as other species of oak trees such as the Q. arizonica, Q. emoryi, and Q. rugosa. [11]
Although called a white oak, it is very unusual to find an individual specimen with white bark; the usual colour is a light gray. The name comes from the colour of the finished wood. In the forest it can reach a magnificent height and in the open it develops into a massive broad-topped tree with large branches striking out at wide angles. [5]
Quercus gambelii, with the common name Gambel oak, is a deciduous small tree or large shrub that is widespread in the foothills and lower mountains of western North America. It is also regionally called scrub oak , oak brush , and white oak .
Quercus ajoensis C.H.Mull. – Ajo Mountain shrub oak, Blue shrub oak – Arizona, New Mexico, Baja California; Quercus alba L. – white oak – eastern and central North America; Quercus aliena Blume – Oriental white oak – eastern Asia; Quercus alpescens Trel. – Mexico; Quercus ariifolia Trel. – Mexico; Quercus arizonica Sarg.
The leaves are obovate to oblong, glabrous above, glabrous to densely grey-white hairy below, mostly 10–20 centimetres (4–8 inches) long and 5–14 cm (2– 5 + 1 ⁄ 2 in) wide (rarely up to 30 cm (12 in) long and 16 cm (6 in) wide), with 9 to 15 lobes on each side, and a 10–13 mm (3 ⁄ 8 – 1 ⁄ 2 in) petiole. The flowers monecious ...
Aleurodiscus oakesii is a cluster of small, gray-white, irregular cup-shaped saprotrophic fungi that grows on decaying hardwood tree bark. This fungus may also be called hophornbeam discs, [1] and it causes smooth patch disease. A. oakesii is found year round in North America, Europe, and Asia and is commonly found on oak trees.
The term tannin (from Anglo-Norman tanner, from Medieval Latin tannare, from tannum, "oak bark") refers to the use of oak and other bark in tanning animal hides into leather. By extension, the term tannin is widely applied to any large polyphenolic compound containing sufficient hydroxyls and other suitable groups (such as carboxyls ) to form ...