Difference between revisions of "Tsuga canadensis"
189. 1855.
Common names: Eastern hemlock pruche du Canada
IllustratedEndemic
Basionym: Pinus canadensis Linnaeus Sp. Pl. ed. 2, 2: 1471. 1763
Treatment appears in FNA Volume 2.
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|common_names=Eastern hemlock;pruche du Canada | |common_names=Eastern hemlock;pruche du Canada | ||
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| + | |code=E | ||
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| + | |basionyms={{Treatment/ID/Basionym | ||
|name=Pinus canadensis | |name=Pinus canadensis | ||
|authority=Linnaeus | |authority=Linnaeus | ||
| + | |rank=species | ||
| + | |publication_title=Sp. Pl. ed. | ||
| + | |publication_place=2, 2: 1471. 1763 | ||
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Trees </b>to 30m; trunk to 1.5m diam.; crown broadly conic. <b>Bark</b> brownish, scaly and fissured. <b>Twigs</b> yellow-brown, densely pubescent. <b>Buds</b> ovoid, 1.5–2.5mm. <b>Leaves</b> (5–)15–20(–25)mm, mostly appearing 2-ranked, flattened; abaxial surface glaucous, with 2 broad, conspicuous stomatal bands, adaxial surface shiny green (yellow-green); margins minutely dentate, especially toward apex. <b>Seed</b> cones ovoid, 1.5–2.5 × 1–1.5cm; scales ovate to cuneate, 8–12 × 7–10mm, apex ± round, often projected outward. <b>2n</b> =24.</span><!-- |
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|elevation=600–1800m | |elevation=600–1800m | ||
|distribution=N.B.;N.S.;Ont.;P.E.I.;Que.;Ala.;Conn.;Del.;Ga.;Ind.;Ky.;Maine;Md.;Mass.;Mich.;Minn.;N.H.;N.J.;N.Y.;N.C.;Ohio;Pa.;R.I.;S.C.;Tenn.;Vt.;Va.;W.Va.;Wis. | |distribution=N.B.;N.S.;Ont.;P.E.I.;Que.;Ala.;Conn.;Del.;Ga.;Ind.;Ky.;Maine;Md.;Mass.;Mich.;Minn.;N.H.;N.J.;N.Y.;N.C.;Ohio;Pa.;R.I.;S.C.;Tenn.;Vt.;Va.;W.Va.;Wis. | ||
| − | |discussion=<p>Numerous cultivars of Tsuga canadensis have been developed, including compact shrubs, dwarfs, and graceful trees. Wood of the species tends to be brittle and inferior to that of the other North American hemlocks.</p><!-- | + | |discussion=<p>Numerous cultivars of <i>Tsuga canadensis</i> have been developed, including compact shrubs, dwarfs, and graceful trees. Wood of the species tends to be brittle and inferior to that of the other North American hemlocks.</p><!-- |
| − | --><p>Eastern hemlock (Tsuga canadensis) is the state tree of Pennsylvania.</p> | + | --><p>Eastern hemlock (<i>Tsuga canadensis</i>) is the state tree of Pennsylvania.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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name=Tsuga canadensis | name=Tsuga canadensis | ||
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|authority=(Linnaeus) Carrière | |authority=(Linnaeus) Carrière | ||
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|publication year=1855 | |publication year=1855 | ||
| − | |special status= | + | |special status=Illustrated;Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V2/V2_72.xml |
|genus=Tsuga | |genus=Tsuga | ||
|species=Tsuga canadensis | |species=Tsuga canadensis | ||
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Latest revision as of 21:25, 5 November 2020
Trees to 30m; trunk to 1.5m diam.; crown broadly conic. Bark brownish, scaly and fissured. Twigs yellow-brown, densely pubescent. Buds ovoid, 1.5–2.5mm. Leaves (5–)15–20(–25)mm, mostly appearing 2-ranked, flattened; abaxial surface glaucous, with 2 broad, conspicuous stomatal bands, adaxial surface shiny green (yellow-green); margins minutely dentate, especially toward apex. Seed cones ovoid, 1.5–2.5 × 1–1.5cm; scales ovate to cuneate, 8–12 × 7–10mm, apex ± round, often projected outward. 2n =24.
Habitat: Moist rocky ridges, ravines, and hillsides
Elevation: 600–1800m
Distribution
N.B., N.S., Ont., P.E.I., Que., Ala., Conn., Del., Ga., Ind., Ky., Maine, Md., Mass., Mich., Minn., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., Tenn., Vt., Va., W.Va., Wis.
Discussion
Numerous cultivars of Tsuga canadensis have been developed, including compact shrubs, dwarfs, and graceful trees. Wood of the species tends to be brittle and inferior to that of the other North American hemlocks.
Eastern hemlock (Tsuga canadensis) is the state tree of Pennsylvania.
Selected References
None.
Lower Taxa
None.