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| − | --><span class="statement" id="st-d0_s0" data-properties="tree some measurement"><b>Trees </b>to 25m;</span> <span class="statement" id="st-d0_s1" data-properties="trunk diameter">trunk to 1.2m diam.;</span> <span class="statement" id="st-d0_s2" data-properties="crown count or density;crown shape">crown sparse, conic.</span> <span class="statement" id="st-d0_s3" data-properties="bark architecture;scale coloration;scale coloration;scale coloration"><b>Bark </b>furrowed and flaking into red to purple-brown scales.</span> <span class="statement" id="st-d0_s4" data-properties="branch orientation;branch orientation;branch duration"><b>Branches </b>horizontal, occasionally pendulous, persistent on trunk when dead;</span> <span class="statement" id="st-d0_s5" data-properties="twig coloration;twig pubescence;year count">twigs strongly white to yellow-tomentose for 2–3 years.</span> <span class="statement" id="st-d0_s6" data-properties="bud pubescence;scale margin architecture or pubescence or shape"><b>Buds </b>tomentose, scale margins ciliate.</span> <span class="statement" id="st-d0_s7" data-properties="leaf thickness;leaf thickness;leaf thickness;leaf shape;leaf shape"><b>Leaves </b>of short-shoots 2–3.5cm × 0.6–0.8mm, 0.4–0.6mm thick, keeled abaxially, 2-angled adaxially;</span> <span class="statement" id="st-d0_s8" data-properties="resin canal location;epithelial count;cell count">resin canals 40–80µm from margins, each surrounded by 6–10 epithelial cells.</span> <span class="statement" id="st-d0_s9" data-properties="seed-cone atypical length;seed-cone length;seed-cone width;stalk course;stalk length;stalk width"><b>Seed-</b>cones 2.5–4 (–5) × 1.1–1.9cm, on curved stalks 3–7 × 2.5–4mm;</span> <span class="statement" id="st-d0_s10" data-properties="scale count;margin architecture or relief;abaxial surface pubescence">scales 45–55, margins erose, abaxial surface tomentose;</span> <span class="statement" id="st-d0_s11" data-properties="bract architecture;awn some measurement;scale life cycle">bracts tipped by awn 4–5mm, exceeding mature scales by ca. 6mm.</span> <span class="statement" id="st-d0_s12" data-properties="pollen diameter"><b>Pollen </b>78–93µm diam.</span> <span class="statement" id="st-d0_s13" data-properties="seed coloration;seed coloration;seed coloration;body some measurement;wing some measurement"><b>Seeds </b>yellow to purple, body 3mm, wing 6mm.</span><!-- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Trees </b>to 25m; trunk to 1.2m diam.; crown sparse, conic. <b>Bark</b> furrowed and flaking into red- to purple-brown scales. <b>Branches</b> horizontal, occasionally pendulous, persistent on trunk when dead; twigs strongly white- to yellow-tomentose for 2–3 years. <b>Buds</b> tomentose, scale margins ciliate. <b>Leaves</b> of short shoots 2–3.5cm × 0.6–0.8mm, 0.4–0.6mm thick, keeled abaxially, 2-angled adaxially; resin canals 40–80µm from margins, each surrounded by 6–10 epithelial cells. <b>Seed</b> cones 2.5–4(–5) × 1.1–1.9cm, on curved stalks 3–7 × 2.5–4mm; scales 45–55, margins erose, abaxial surface tomentose; bracts tipped by awn 4–5mm, exceeding mature scales by ca. 6mm. <b>Pollen</b> 78–93µm diam. <b>Seeds</b> yellow to purple, body 3mm, wing 6mm.</span><!-- |
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| | |publication year=1863 | | |publication year=1863 |
| | |special status= | | |special status= |
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V2/V2_425.xml | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_425.xml |
| | |genus=Larix | | |genus=Larix |
| | |species=Larix lyallii | | |species=Larix lyallii |
| − | |abaxial surface pubescence=tomentose
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| − | |awn some measurement=4mm;5mm
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| − | |bark architecture=furrowed
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| − | |body some measurement=3
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| − | |bract architecture=tipped
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| − | |branch duration=persistent
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| − | |branch orientation=pendulous;horizontal
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| − | |bud pubescence=tomentose
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| − | |cell count=6;10
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| − | |crown count or density=sparse
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| − | |crown shape=conic
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| − | |epithelial count=6;10
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| − | |leaf shape=2-angled;keeled
| |
| − | |leaf thickness=0.4mm;0.6mm
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| − | |margin architecture or relief=erose
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| − | |pollen diameter=78µm;93µm
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| − | |resin canal location=40µm;80µm
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| − | |scale coloration=red;purple-brown
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| − | |scale count=45;55
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| − | |scale life cycle=mature
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| − | |scale margin architecture or pubescence or shape=ciliate
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| − | |seed coloration=yellow;purple
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| − | |seed-cone atypical length=4cm;5cm
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| − | |seed-cone length=2.5cm;4cm
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| − | |seed-cone width=1.1cm;1.9cm
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| − | |stalk course=curved
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| − | |stalk length=3mm;7mm
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| − | |stalk width=2.5mm;4mm
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| − | |tree some measurement=0m;25m
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| − | |trunk diameter=0m;1.2m
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| − | |twig coloration=white
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| − | |twig pubescence=yellow-tomentose
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| − | |wing some measurement=6
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| − | |year count=2;3
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| | -->[[Category:Treatment]][[Category:Larix]] | | -->[[Category:Treatment]][[Category:Larix]] |
Trees to 25m; trunk to 1.2m diam.; crown sparse, conic. Bark furrowed and flaking into red- to purple-brown scales. Branches horizontal, occasionally pendulous, persistent on trunk when dead; twigs strongly white- to yellow-tomentose for 2–3 years. Buds tomentose, scale margins ciliate. Leaves of short shoots 2–3.5cm × 0.6–0.8mm, 0.4–0.6mm thick, keeled abaxially, 2-angled adaxially; resin canals 40–80µm from margins, each surrounded by 6–10 epithelial cells. Seed cones 2.5–4(–5) × 1.1–1.9cm, on curved stalks 3–7 × 2.5–4mm; scales 45–55, margins erose, abaxial surface tomentose; bracts tipped by awn 4–5mm, exceeding mature scales by ca. 6mm. Pollen 78–93µm diam. Seeds yellow to purple, body 3mm, wing 6mm.
Habitat: Subalpine talus slopes
Elevation: 1800–2400m
Distribution
Alta., B.C., Idaho, Mont., Wash.
Discussion
Larix lyallii and L. occidentalis (Larix sect. Multiseriales) are similar morphologically and have similar geographic ranges. Just how closely the two species are related has not been determined, but they probably originated from a common ancestor resembling L. potaninii Batalin. Although the geographic ranges of the two species overlap considerably, elevational differences of 150 to 300m usually separate them. Some morphologically intermediate specimens have been collected from Washington and Montana.
Because of its restricted distribution and growth at timberline, alpine larch has no commercial importance; it is often dwarfed and misshapen.
Selected References
None.
