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For other uses, see Hazel (disambiguation).
Hazel
Corylus avellana 0001.JPG
common hazel (Corylus avellana)
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Fagales
Family: Betulaceae
Genus: Corylus
L.
Synonyms[1]

Lopima Dochnahl

The hazels (Corylus) are a genus of deciduous trees and large shrubs native to the temperate Northern Hemisphere. The genus is usually placed in the birch family Betulaceae,[2][3][4][5] though some botanists split the hazels (with the hornbeams and allied genera) into a separate family Corylaceae.[6][7] The fruit of the hazel is the hazelnut.

Hazels have simple, rounded leaves with double-serrate margins. The flowers are produced very early in spring before the leaves, and are monoecious, with single-sex catkins, the male catkins are pale yellow and 5–12 cm long, and the female ones are very small and largely concealed in the buds, with only the bright-red, 1- to 3-mm-long styles visible. The fruits are nuts 1–2.5 cm long and 1–2 cm diameter, surrounded by an involucre (husk) which partly to fully encloses the nut.[4]

The shape and structure of the involucre, and also the growth habit (whether a tree or a suckering shrub), are important in the identification of the different species of hazel.[4]

The pollen of hazel species, which are often the cause for allergies in late winter or early spring, can be identified under magnification (600X) by their characteristic granular exines bearing three conspicuous pores.[8]

Species[edit]

Corylus has 14–18 species. The circumscription of species in eastern Asia is disputed, with WCSP and the Flora of China differing in which taxa are accepted; within this region, only those taxa accepted by both sources are listed below.[4][9][10][11] The species are grouped as follows:

Several hybrids exist, and can occur between species in different sections of the genus, e.g. Corylus × colurnoides (C. avellana × C. colurna). The oldest confirmed hazel species is Corylus johnsonii found as fossils in the Ypresian-age rocks of Ferry County, Washington.[12]

Uses[edit]

The nuts of all hazels are edible. The common hazel is the species most extensively grown for its nuts, followed in importance by the filbert. Nuts are also harvested from the other species, but apart from the filbert, none is of significant commercial importance.[5]

A number of cultivars of the common hazel and filbert are grown as ornamental plants in gardens, including forms with contorted stems (C. avellana 'Contorta', popularly known as "Harry Lauder's walking stick" from its gnarled appearance); with weeping branches (C. avellana 'Pendula'); and with purple leaves (C. maxima 'Purpurea').

Hazel is a traditional material used for making wattle, withy fencing, baskets, and the frames of coracle boats. The tree can be coppiced, and regenerating shoots allow for harvests every few years.

Hazels are used as food plants by the larvae of various species of Lepidoptera.

Mythology and folklore[edit]

The Celts believed hazelnuts gave one wisdom and inspiration. There are numerous variations on an ancient tale that nine hazel trees grew around a sacred pool, dropping into the water nuts that were eaten by salmon (a fish sacred to Druids), which absorbed the wisdom. A Druid teacher, in his bid to become omniscient, caught one of these special salmon and asked a student to cook the fish, but not to eat it. While he was cooking it, a blister formed and the pupil used his thumb to burst it, which he naturally sucked to cool, thereby absorbing the fish's wisdom. This boy was called Fionn Mac Cumhail (Fin McCool) and went on to become one of the most heroic leaders in Gaelic mythology.[13]

"The Hazel Branch" from Grimms' Fairy Tales claims that hazel branches offer the greatest protection from snakes and other things that creep on the earth.

Gallery[edit]

Giresun Hazel Turkey

References[edit]

  1. ^ Kew World Checklist of Selected Plant Families
  2. ^ Germplasm Resources Information Network: Corylus
  3. ^ Chen, Z.-D. et al. (1999). Phylogeny and evolution of the Betulaceae as inferred from DNA sequences, morphology, and paleobotany. Amer. J. Bot. 86: 1168–1181. Available online.
  4. ^ a b c d Rushforth, K. (1999). Trees of Britain and Europe. Collins ISBN 0-00-220013-9.
  5. ^ a b Huxley, A., ed. (1992). New RHS Dictionary of Gardening. Macmillan ISBN 0-333-47494-5.
  6. ^ Bean, W. J. (1976). Trees and Shrubs Hardy in the British Isles 8th ed., vol. 1. John Murray ISBN 0-7195-1790-7.
  7. ^ Erdogan, V. & Mehlenbacher, S. A. (2002). Phylogenetic analysis of hazelnut species (Corylus, Corylacae) based on morphology and phenology. Sist. Bot. Dergisi 9: 83–100.
  8. ^ Nature 10, 355-355 (03 September 1874) | doi:10.1038/010355b0 (Letters to the Editor). Retrieved 23 February 2014.
  9. ^ WCSP: Corylus
  10. ^ Flora of China: Corylus
  11. ^ Flora of North America: Corylus
  12. ^ Pigg, K.B.; Manchester S.R. & Wehr W.C. (2003). "Corylus, Carpinus, and Palaeocarpinus (Betulaceae) from the Middle Eocene Klondike Mountain and Allenby Formations of Northwestern North America". International Journal of Plant Sciences 164 (5): 807–822. doi:10.1086/376816. 
  13. ^ Floriz: Mythology and Folklore of the Hazel Tree

External links[edit]


Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Hazel — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
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Herald & Review
Tue, 26 Aug 2014 23:56:15 -0700

Hazel was born September 27, 1924 in Sparta, WI, the daughter of Lyman and Sylvia (Plautz) Leach. Early in her career Hazel was a church secretary for Decatur Church of the Brethren, and then later she became an Avon Representative. She was a ...
 
whnt.com
Tue, 26 Aug 2014 16:26:15 -0700

HAZEL GREEN, Ala. (WHNT)– Tuesday, educators held a ribbon-cutting at Hazel Green High School to announce its new Culinary Academy. Principal Derrell Long said, “For us to have this is a huge opportunity for our school, and our community.”.

The Guardian

The Guardian
Tue, 26 Aug 2014 11:02:34 -0700

Longer-serving still is “Hurricane” Hazel McCallion, who has presided over Missassauga, the sixth-largest city in Canada, since 1978 (a year in which the Sex Pistols were still playing live). At the tender age of 93, McCallion is the oldest currently ...
 
AL.com
Tue, 26 Aug 2014 10:03:45 -0700

HAZEL GREEN, Alabama – Hazel Green High School students will be ready for careers in catering kitchens with the addition of a new culinary academy. Principal Darrell Long commended teachers, students, and district and state officials for collaborating ...
 
WAFF
Tue, 26 Aug 2014 14:38:18 -0700

Hazel Green, AL (WAFF) - The chefs of tomorrow are getting an early education thanks to a new culinary class being offered in one Madison County school. Students at Hazel Green High School cut the ribbon on a brand new industrial kitchen classroom for ...
 
The Journal News | LoHud.com
Wed, 27 Aug 2014 18:07:30 -0700

On Monday, Hazel P. Lancaster died in her home. She was 90. Born in Pleasant Shade, Tennessee, Lancaster received a bachelor's degree from Tennessee A & I College — now known as Tennessee State University — before moving to Nanuet with her ...

Toronto Star

Toronto Star
Sun, 24 Aug 2014 19:20:06 -0700

Once Hazel McCallion, who was elected Mississauga mayor in 1978, steps down in October at 93, Krantz will likely be crowned the longest-serving mayor in Ontario. Krantz, 77, counts McCallion among his friends; a McCallion bobblehead stands on a shelf ...
 
The Huntsville Times - al.com
Tue, 26 Aug 2014 03:18:45 -0700

HUNTSVILLE, Alabama -- The people have spoken and selected Muscle Shoals at Hazel Green as the Tennessee Valley Game of the Week. This will be the teams' first meeting since 1997, according to the Alabama High School Football Historical Society, ...
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