- Sessile Oak
name = Sessile Oak
status = LC
image_width = 200px
image_caption = Sessile Oak
divisio = Magnoliophyta
classis = Magnoliopsida
genus = "Quercus"
sectio = "Quercus"
species = "Q. petraea"
binomial = "Quercus petraea"
binomial_authority = (
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
oaknative to most of Europe, and into Anatolia.
The Sessile Oak is a large
deciduous treeup 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 fruitis an acorn2-3 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.
woodis important, used for construction purposes, shipbuilding, and for making barrels for wine.
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]
* [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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sessile oak — noun an oak tree with stalkless egg shaped acorns, common in hilly areas. [Quercus petraea.] … English new terms dictionary
sessile oak — noun A large, deciduous tree, Quercus petraea … Wiktionary
sessile oak — noun : durmast … Useful english dictionary
Sessile — is a term in biology with two distinct meanings: In botany and medicine In botany, sessile means without a stalk , as in flowers (pedicel) or leaves (petiole) that grow directly from the stem or peduncle; however, in limnology, sessile vegetation … Wikipedia
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sessile — adj. 1 Bot. & Zool. (of a flower, leaf, eye, etc.) attached directly by its base without a stalk or peduncle. 2 fixed in one position; immobile. Phrases and idioms: sessile oak = DURMAST. Etymology: L sessilis f. sedere sess sit … Useful english dictionary
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