View source for Pinus albicaulis

{{Treatment/ID
|accepted_name=Pinus albicaulis
|accepted_authority=Engelmann
|publications={{Treatment/Publication
|title=Trans. Acad. Sci. St. Louis
|place=2: 209. 1863
|year=1863
}}
|common_names=Whitebark pine;pine à blanche écorce
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Apinus albicaulis
|authority=(Engelmann) Rydberg
|rank=species
}}
|hierarchy=Pinaceae;Pinus;Pinus albicaulis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Pinaceae]]</div><div class="higher-taxon"><small>genus</small>[[Pinus]]</div><div class="higher-taxon"><small>species</small>[[Pinus albicaulis]]</div></div>
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Trees </b>to 21m; trunk to 1.5m diam., straight to twisted and contorted; crown conic, becoming rounded to irregularly spreading. <b>Bark</b> pale gray, from distance appearing whitish to light gray and smooth, in age separating into thin plates. <b>Branches</b> spreading to ascending, often persistent to trunk base; twigs stout, pale red-brown, with light brown, often glandular puberulence, somewhat roughened by elevated scars, aging gray to pale gray-brown. <b>Buds</b> ovoid, light red-brown, 0.8–1cm; scale margins entire. <b>Leaves</b> 5 per fascicle, mostly ascending and upcurved, persisting 5–8 years, 3–7cm × 1–1.5(–2)mm, mostly connivent, deep yellow-green, abaxial surface less so, adaxial surface conspicuously whitened by stomates, margins rounded, minutely serrulate distally, apex conic-acute; sheath 0.8–1.2cm, shed early. <b>Pollen</b> cones cylindro-ovoid, ca. 10–15mm, scarlet. <b>Seed</b> cones remaining on tree (unless dislodged by animals), not opening naturally but through animal agency, spreading, symmetric, broadly ovoid to depressed-ovoid or nearly globose, 4–8cm, dull gray- to black-purple, sessile to short-stalked; scales thin-based and easily broken off; apophyses much thickened, strongly cross-keeled, tip upcurved, brown; umbo terminal, short, incurved, broadly triangular, tip acute. <b>Seeds</b> obovoid; body 7–11mm, chestnut brown, wingless. <b>2n</b> =24.</span><!--

-->{{Treatment/Body
|habitat=Thin, rocky, cold soils at or near timberline, montane forests
|elevation=1300–3700m
|distribution=Alta.;B.C.;Calif.;Idaho;Mont.;Nev.;Oreg.;Wash.;Wyo.
|discussion=<p>Although two reliable dendrologists, G. B. Sudworth (1917) and N. T. Mirov (1967), include Utah in the distribution of <i>Pinus albicaulis</i>, more recent workers have not found it to occur there.</p><!--
--><p>The fresh-cut wood of <i>Pinus albicaulis</i> is sweet-scented. Seeds are dispersed mainly by Clark's nutcracker [Nucifraga columbiana (Wilson), family Corvidae].</p>
|tables=
|references={{Treatment/Reference
|id=lanner1982a
|text=Lanner, R.M. 1982. Adaptations of whitebark pine for seed dispersal by Clark's nutcracker. Canad. J. Forest Res. 12: 391--402.
}}
}}<!--

--><!--

-->{{#Taxon:
name=Pinus albicaulis
|authority=Engelmann
|rank=species
|parent rank=genus
|synonyms=Apinus albicaulis
|basionyms=
|family=Pinaceae
|habitat=Thin, rocky, cold soils at or near timberline, montane forests
|elevation=1300–3700m
|distribution=Alta.;B.C.;Calif.;Idaho;Mont.;Nev.;Oreg.;Wash.;Wyo.
|reference=lanner1982a
|publication title=Trans. Acad. Sci. St. Louis
|publication year=1863
|special status=Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V2/V2_585.xml
|genus=Pinus
|species=Pinus albicaulis
}}<!--

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