Munur á milli breytinga „Hesli“

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Merki: 2017 source edit
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{{taxobox
| image = Corylus avellana 0001.JPG
| classis = [[Tvíkímblöðungar]] (''Magnoliopsida'')
| ordo = [[Beykibálkur]] (''Fagales'')
| familia = '''Birkiætt'''[[Bjarkarætt]] (''Betulaceae'')
| taxongenus = '''''Hesli''''' (''Corylus'')
| authority = [[Carl Linnaeus|L.]]
| synonyms_ref = <ref>[http://apps.kew.org/wcsp/synonomy.do?name_id=47827 Kew World Checklist of Selected Plant Families]</ref>
[[File:Catkins Corylus avellana-Mont Bart-5124~2015 12 26.JPG|thumb|right|Reklar á ''[[Corylus avellana]]'']]
 
'''Hesli''' ([[fræðiheiti]]: ''Corylus'') er [[ættkvísl]] lauffellandi [[tré|trjáa]] og stórra [[runni|runna]] ættuðum frá tempruðum svæðum norðurhvels. Ættkvíslin er vananlega sett í birkiætt [[Betulaceaebjarkarætt]] (''Betulaceae''),<ref name=grin>Germplasm Resources Information Network: [http://www.ars-grin.gov/cgi-bin/npgs/html/genus.pl?2962 ''Corylus'']</ref><ref name=chen>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 [http://www.amjbot.org/cgi/content/full/86/8/1168?ck=nck#F5 online.]</ref><ref name=rushforth>Rushforth, K. (1999). ''Trees of Britain and Europe''. Collins {{ISBN|0-00-220013-9}}.</ref><ref name=rhs>Huxley, A., ed. (1992). ''New RHS Dictionary of Gardening''. Macmillan {{ISBN|0-333-47494-5}}.</ref> þó að sumir grasafræðingar vilji setja þau í sér ætt (ásamt [[agnbeyki]], ''[[Ostrya]]'' og ''[[Ostryopsis]]'') í aðskilda ætt ''[[Corylaceae]]''.<ref name=bean1>Bean, W. J. (1976). ''Trees and Shrubs Hardy in the British Isles'' 8th ed., vol. 1. John Murray {{ISBN|0-7195-1790-7}}.</ref><ref>Erdogan, V. & Mehlenbacher, S. A. (2002). Phylogenetic analysis of hazelnut species (Corylus, Corylacae) based on morphology and phenology. ''Sist. Bot. Dergisi'' 9: 83–100.</ref>
 
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