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Knobcone pine
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==Description== Individual specimens can live up to a century.<ref name=":0">{{Cite book |last1=Arno |first1=Stephen F. |url=https://www.worldcat.org/oclc/1141235469 |title=Northwest Trees: Identifying & Understanding the Region's Native Trees |last2=Hammerly |first2=Ramona P. |publisher=[[Mountaineers Books]] |year=2020 |isbn=978-1-68051-329-5 |edition=field guide |location=Seattle |pages=58–61 |language=en |oclc=1141235469 |orig-date=1977}}</ref> The crown is usually conical with a straight trunk. It reaches heights of {{convert|8|-|24|m|ft|sp=us|abbr=off}},<ref>{{Gymnosperm Database |family=Pinaceae |genus=Pinus |species=attenuata }}</ref> but can be a shrub on especially poor sites. The [[Bark (botany)|bark]] is thin and smooth, flaky and gray-brown when young, becoming dark<ref name=":0" /> gray-red-brown and shallowly furrowed into flat scaly ridges in age. The twigs are red-brown and often resinous. Its wood is knotty and of little interest for lumber.<ref name=":0" /> The [[leaves]] are in fascicles of three,<ref>[https://web.archive.org/web/20070315152636/http://www.enature.com/fieldguides/detail.asp?source=&parkid=&searchText=&allSpecies=&shapeID=0&lshapeID=22&curAbbr=&lastView=default&lastGroup=10&lastRegion=&lastFilter=4&lastShapeName=&trackType=&curRegionID=&size=&habitat=&fruit=&color=&sortBy=family&curFamilyID=696®ionSelect=All+regions®ionZIP=&curGroupID=10&lgfromWhere=&curPageNum=27 eNature Field Guides (2007) ''Knobcone Pine'']</ref> needle-like, yellow-green, twisted, and {{Convert|9–15|cm|sp=us|frac=4}} long. The [[Conifer cone|cone]]s are resin-sealed and irregularly shaped,<ref name=":0" /> {{Convert|8–16|cm|abbr=on|frac=4}} long and clustered in [[Whorl (botany)|whorls]] of three to six on the branches. The scales end in a short stout prickle. Cones can sometimes be found attached to the trunk and larger branches.<ref name=":0" /> <gallery> File:Pinaceae Knobcone Pine Pinus attenuata.jpg|Leaves File:H20130601-8518—Pinus attenuata—Walker Ridge (9233604022).jpg|male cones File:Pinus attenuata BLM7.jpg|Cones File:Knobcone_Pine_Cone.jpg|Knobcone pine cone File:Pinus attenuata Big Basin 5.jpg|Plant File:Pinus attenuata Big Basin 4.jpg|Habitat </gallery>
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