Sessile Oak


Sessile Oak

Taxobox
name = Sessile Oak
status = LC



image_width = 200px
image_caption = Sessile Oak
regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Fagales
familia = Fagaceae
genus = "Quercus"
sectio = "Quercus"
species = "Q. petraea"
binomial = "Quercus petraea"
binomial_authority = (Mattuschka) Liebl.

The Sessile Oak ("Quercus petraea", or "Quercus sessiliflora" [cite web|url=http://www.ars-grin.gov/cgi-bin/npgs/html/taxon.pl?30749|title=Quercus sessiliflora Salisb.|publisher=USDA GRIN Taxonomy for Plants] ), also known as Durmast Oak, is a species of oak native to most of Europe, and into Anatolia.

Description

The Sessile Oak is a large deciduous tree up to 20-40 m tall, in the white oak section of the genus ("Quercus" sect. "Quercus") and similar to the Pedunculate Oak, "Q. robur", with which it overlaps extensively in range. The leaves are 7-14 cm long and 4-8 cm broad, evenly lobed with five to six lobes on each side, and a 1 cm petiole. The flowers are catkins, produced in the spring. The fruit is an acorn 2-3 cm long and 1-2 cm broad, which matures in about 6 months.

Comparison with Pedunculate Oak

Significant botanical differences with "Quercus robur" include the stalked leaves, and the stalkless (sessile) acorns, from which one of its common names is derived. It is found more often than the "Quercus robur" in upland areas with higher rainfall, but also with lighter soils with better drainage. Hybrids with the "Quercus robur" are often found, and are named "Quercus × rosacea"; they are intermediate in characters.

Uses

The wood is important, used for construction purposes, shipbuilding, and for making barrels for wine.

ymbology

Sessile Oak has been designated the national tree of Wales, where it is also called Welsh Oak. [ [http://news.bbc.co.uk/1/hi/wales/north_west/3920051.stm "Tree trail with worldwide flavour"] , BBC News, 23 July 2004]

Notes

References

* [http://rbg-web2.rbge.org.uk/cgi-bin/nph-readbtree.pl/feout?FAMILY_XREF=&GENUS_XREF=Quercus&SPECIES_XREF=petraea&TAXON_NAME_XREF=&RANK= Flora Europaea: "Quercus petraea"]
*Bean, W. J. (1976). "Trees and shrubs hardy in the British Isles" 8th ed., revised. John Murray.
*Rushforth, K. (1999). "Trees of Britain and Europe". HarperCollins ISBN 0-00-220013-9.
*fr icon [http://jeanlouis.helardot.free.fr/page_chenes/quercus_petraea.htm Chênes: "Quercus petraea"]


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