View source for Pinus strobiformis

{{Treatment/ID
|accepted_name=Pinus strobiformis
|accepted_authority=Engelmann in Wislizenus
|publications={{Treatment/Publication
|title=in Wislizenus,Mem. Tour N. Mexico
|place=102. 1848
|year=1848
}}
|common_names=Southwestern white pine;Mexican white pine;pino enano
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Pinus ayacahuite var. brachyptera
|authority=G.R. Shaw
|rank=variety
}} {{Treatment/ID/Synonym
|name=Pinus ayacahuite var. reflexa
|authority=(Engelmann) Voss
|rank=variety
}} {{Treatment/ID/Synonym
|name=Pinus ayacahuite var. strobiformis
|authority=(Engelmann) Lemmon
|rank=variety
}} {{Treatment/ID/Synonym
|name=Pinus flexilis var. reflexa
|authority=Engelmann
|rank=variety
}} {{Treatment/ID/Synonym
|name=Pinus reflexa
|authority=
|rank=species
}}
|hierarchy=Pinaceae;Pinus;Pinus strobiformis
|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 strobiformis]]</div></div>
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism some measurement;whole_organism growth form"><b>Trees </b>to 30m;</span> <span class="statement" id="st-d0_s1" data-properties="trunk diameter;trunk size;trunk course">trunk to 0.9m diam., slender, straight;</span> <span class="statement" id="st-d0_s2" data-properties="crown shape;crown shape;crown architecture or course">crown conic, becoming rounded to irregular.</span> <span class="statement" id="st-d0_s3" data-properties="bark coloration;bark life cycle;bark coloration;bark architecture;ridge size or width;ridge architecture or course;ridge architecture or pubescence"><b>Bark </b>gray, aging redbrown, furrowed, with narrow, irregular, scaly ridges.</span> <span class="statement" id="st-d0_s4" data-properties="branch orientation"><b>Branches </b>spreading-ascending;</span> <span class="statement" id="st-d0_s5" data-properties="twig size;twig coloration;twig pubescence;twig pubescence;twig pubescence;twig coloration;twig coloration;twig coloration;twig architecture or pubescence or relief">twigs slender, pale redbrown, puberulous or glabrous, sometimes glaucous, aging gray or gray-brown, smooth.</span> <span class="statement" id="st-d0_s6" data-properties="bud shape;bud coloration;bud some measurement;bud coating"><b>Buds </b>ellipsoid, redbrown, ca. 1cm, resinous.</span> <span class="statement" id="st-d0_s7" data-properties="leaf quantity;leaf orientation;leaf duration;leaf quantity;leaf length;leaf width;leaf course;leaf architecture;leaf fragility or texture;leaf coloration;stomatal prominence;line prominence;adaxial surface coloration;stomatal line shape or architecture;stomatal line architecture or shape;stomatal line size or width;margin shape;margin shape;stomatal line shape or architecture;stomatal line architecture or shape;stomatal line size or width;apex shape"><b>Leaves </b>5 per fascicle, spreading to ascending-upcurved, persisting 3–5 years, 4–9cm × 0.6–1mm, straight, slightly twisted, pliant, dark green to blue-green, abaxial surface without evident stomatal lines, adaxial surfaces conspicuously whitened by narrow stomatal lines, margins sharp, razorlike and entire to finely serrulate, apex narrowly acute to short-subulate;</span> <span class="statement" id="st-d0_s8" data-properties="sheath some measurement">sheath 1.5–2cm, shed early.</span> <span class="statement" id="st-d0_s9" data-properties="pollen cone shape;pollen cone some measurement;pollen cone coloration"><b>Pollen </b>cones cylindric, ca. 6–10mm, pale yellowbrown.</span> <span class="statement" id="st-d0_s10" data-properties="cone-seed life cycle;cone-seed life cycle;cone-seed orientation;cone-seed architecture or shape;cone-seed shape;cone-seed shape;cone-seed distance;cone-seed coloration;year quantity;stalk some measurement"><b>Seed-</b>cones maturing in 2 years, shedding seeds and falling soon thereafter, pendent, symmetric, lance-cylindric before opening, broadly lance-cylindric when open, 15–25cm, creamy brown to light yellowbrown, stalks to 6cm;</span> <span class="statement" id="st-d0_s11" data-properties="apophysis size or width;apophysis shape;tip orientation">apophyses somewhat thickened, strongly cross-keeled, tip reflexed;</span> <span class="statement" id="st-d0_s12" data-properties="umbo position or structure subtype;umbo position">umbo terminal, low.</span> <span class="statement" id="st-d0_s13" data-properties="seed shape"><b>Seeds </b>ovoid;</span> <span class="statement" id="st-d0_s14" data-properties="">body 10–13mm, redbrown, essentially wingless.</span> <span class="statement" id="st-d0_s15" data-properties="body some measurement;body coloration;body architecture;2n chromosome quantity">2n =24.</span><!--

-->{{Treatment/Body
|habitat=Arid to moist summit elevations, montane forests
|elevation=1900–3000m
|distribution=Ariz.;N.Mex.;Tex.;n Mexico
|discussion=<p>In the northern part of the range, Pinus strobiformis overlaps P. flexilis and reportedly hybridizes with it. On average P. strobiformis has longer, more slender leaves and thinner, more spreading-tipped apophyses than are found in P. flexilis, and stomatal bands are not evident on the abaxial surface of its leaves.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Pinus strobiformis
|authority=Engelmann in Wislizenus
|rank=species
|parent rank=genus
|synonyms=Pinus ayacahuite var. brachyptera;Pinus ayacahuite var. reflexa;Pinus ayacahuite var. strobiformis;Pinus flexilis var. reflexa;Pinus reflexa
|basionyms=
|family=Pinaceae
|habitat=Arid to moist summit elevations, montane forests
|elevation=1900–3000m
|distribution=Ariz.;N.Mex.;Tex.;n Mexico
|reference=None
|publication title=in Wislizenus,Mem. Tour N. Mexico
|publication year=1848
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V2/V2_186.xml
|genus=Pinus
|species=Pinus strobiformis
|2n chromosome quantity=24
|adaxial surface coloration=whitened
|apex shape=narrowly acute;short-subulate
|apophysis shape=cross-keeled
|apophysis size or width=thickened
|bark architecture=furrowed
|bark coloration=redbrown;gray
|bark life cycle=aging
|body architecture=wingless
|body coloration=redbrown
|body some measurement=10mm;13mm
|branch orientation=spreading-ascending
|bud coating=resinous
|bud coloration=redbrown
|bud shape=ellipsoid
|bud some measurement=1
|cone-seed architecture or shape=symmetric
|cone-seed coloration=creamy brown;light yellowbrown
|cone-seed distance=15cm;25cm
|cone-seed life cycle=falling;maturing
|cone-seed orientation=pendent
|cone-seed shape=lance-cylindric;lance-cylindric
|crown architecture or course=irregular
|crown shape=rounded;conic
|leaf architecture=twisted
|leaf coloration=dark green;blue-green
|leaf course=straight
|leaf duration=persisting
|leaf fragility or texture=pliant
|leaf length=4cm;9cm
|leaf orientation=spreading;ascending-upcurved
|leaf quantity=3;5
|leaf width=0.6mm;1mm
|line prominence=evident
|margin shape=razorlike;sharp
|pollen cone coloration=pale yellowbrown
|pollen cone shape=cylindric
|pollen cone some measurement=6mm;10mm
|ridge architecture or course=irregular
|ridge architecture or pubescence=scaly
|ridge size or width=narrow
|seed shape=ovoid
|sheath some measurement=1.5cm;2cm
|stalk some measurement=6
|stomatal line architecture or shape=serrulate;serrulate
|stomatal line shape or architecture=entire to finely;entire to finely
|stomatal line size or width=narrow;narrow
|stomatal prominence=evident
|tip orientation=reflexed
|trunk course=straight
|trunk diameter=0m;0.9m
|trunk size=slender
|twig architecture or pubescence or relief=smooth
|twig coloration=gray-brown;gray;aging;pale redbrown
|twig pubescence=glaucous;glabrous;puberulous
|twig size=slender
|umbo position=low
|umbo position or structure subtype=terminal
|whole_organism growth form=tree
|whole_organism some measurement=0m;30m
|year quantity=2
}}<!--

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