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Beech

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Beech
Beech tree
Beech tree in centre
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
Genus: Fagus
Species: Fagus crenata - Japanese beech

Fagus engleriana – Chinese beech Fagus grandifolia – American beech Fagus hayatae – Taiwan beech Fagus japonica – Japanese blue beech Fagus longipetiolata – South Chinese beech Fagus lucida – shining beech Fagus mexicana – Mexican beech or haya Fagus moesiaca – Balcan beech Fagus orientalis – Oriental beech Fagus sylvatica – European beech Fagus taurica – Crimean beech

Beech (Fagus) is a genus of deciduous trees in the family Fagaceae, native to temperate Europe, Asia and North America. Recent classification systems of the genus recognize ten to thirteen species in two distinct subgenera, Engleriana and Fagus. The Engleriana subgenus is found only in East Asia, and is notably distinct from the Fagus subgenus in that these beeches are low-branching trees, often made up of several major trunks with yellowish bark. Further differentiating characteristics include the whitish bloom on the underside of the leaves, the visible tertiary leaf veins, and a long, smooth cupule-peduncle. Fagus japonica, Fagus engleriana, and the species F. okamotoi, proposed by the bontanist Chung-Fu Shen in 1992, comprise this subgenus.

Habitat

Beech grows on a wide range of soil types, acidic or basic, provided they are not waterlogged. The tree canopy casts dense shade, and carpets the ground thickly with leaf litter.

In North America, they often form beech-maple climax forests by partnering with the sugar maple.

The beech blight aphid (Grylloprociphilus imbricator) is a common pest of American beech trees. Beeches are also used as food plants by some species of Lepidoptera (see list of Lepidoptera that feed on beeches).

Beech bark is extremely thin and scars easily. Since the beech tree has such delicate bark, carvings, such as lovers' initials and other forms of graffiti, remain because the tree is unable to heal itself. Beech bark disease is a fungal infection that attacks the American beech through damage caused by scale insects. Infection can lead to the death of the tree.

Wiki.png This page uses content from Wikipedia. The original article was at Beech. The list of authors can be seen in the page history. As with Open Science Wiki, the text of Wikipedia is available under the GNU Free Documentation License.


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