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Britain and Ireland have few endemic trees, most being micro-species of Whitebeam. But there are some interesting endemic trees nevertheless. Apomictic Whitebeams endemic to the British Isles: Sorbus arranensis – Isle of Arran only. Arran Service Tree – Isle of Arran only. Sorbus pseudomeinichii - Isle of Arran only.
The Great British Trees were 50 trees selected by The Tree Council in 2002 to spotlight trees in the United Kingdom in honour of the Queen's Golden Jubilee. [1]
Chart illustrating leaf morphology terms The following terms are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (that is, the leaf blade or 'lamina' is undivided) or compound (that is, the leaf blade is divided into two or more leaflets ). [ 1 ]
Britain's native tree flora comprises 32 species, of which 29 are broadleaves. The UK's industry and populace uses at least 50 million tonnes of timber a year. More than 75% of this is softwood, and British forests cannot supply the demand; in fact, less than 10% of the timber used in Britain is home-grown.
Quercus robur is a deciduous tree up to 40 metres (130 ft) tall, [5] with a single stout trunk that can be as much as 11 m (36 ft) in girth (circumference at breast height) or even 14 m (46 ft) in pollarded specimens. Older trees tend to be pollarded, with boles (the main trunk) 2–3 m (6 + 1 ⁄ 2 –10 ft) long. These live longer and become ...
The large leaves can create a disposal problem in cities, as they are tough and sometimes can take more than one year to break down if they remain whole. London planes are often pruned by a technique called pollarding. A pollarded tree has a drastically different appearance than an unpruned tree, being much shorter with stunted, club-like branches.
An oak is a hardwood tree or shrub in the genus Quercus of the beech family. They have spirally arranged leaves, often with lobed edges, and a nut called an acorn, borne within a cup. The genus is widely distributed in the Northern Hemisphere; it includes some 500 species, both deciduous and evergreen.
Tilia species are mostly large, deciduous trees, reaching typically 20 to 40 m (65 to 130 ft) tall, with oblique-cordate (heart-shaped) leaves 6 to 20 cm (2 + 1 ⁄ 4 to 7 + 3 ⁄ 4 in) across. As with elms , the exact number of species is uncertain, as many of the species can hybridise readily, both in the wild and in cultivation.