Difference between revisions of "Quercus michauxii"
Gen. N. Amer. Pl. 2: 215. 1818.
Common names: Basket oak cow oak swamp chestnut oak
EndemicIllustrated
Synonyms: Quercus houstoniana C. H. Muller
Treatment appears in FNA Volume 3.
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|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
| − | |name= | + | |name=Quercus houstoniana |
|authority=C. H. Muller | |authority=C. H. Muller | ||
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|hierarchy=Fagaceae;Quercus;Quercus sect. Quercus;Quercus michauxii | |hierarchy=Fagaceae;Quercus;Quercus sect. Quercus;Quercus michauxii | ||
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Trees,</b> deciduous, to 20 m. <b>Bark</b> light brown or gray, scaly. <b>Twigs</b> brown or reddish brown, 2-3 mm diam., with sparse spreading hairs or glabrate. <b>Buds</b> reddish brown, ovoid, apex rounded or acute, glabrous or minutely puberulent. <b>Leaves</b>: petiole 5-20 mm. <b>Leaf</b> blade broadly obovate or broadly elliptic, (60-)100-280 × 50-180 mm, base rounded-acuminate or broadly cuneate, margins regularly toothed, teeth rounded, dentate, or acuminate, secondary veins 15-20 on each side, parallel, straight or somewhat curved, apex broadly rounded or acuminate; surfaces abaxially light green or yellowish, felty to touch because of conspicuous or minute, erect, 1-4-rayed hairs, adaxially glabrous or with minute simple or fascicled hairs. <b>Acorns</b> 1-3, subsessile or more often on axillary peduncle to 20-30 mm; cup hemispheric, broadly hemispheric or even short-cylindric, 15-25 mm deep × 25-40 mm wide, enclosing 1/2 nut or more, scales very loosely appressed, distinct to base, gray or light brown, moderately to heavily tuberculate, tips silky-tomentose; nut light brown, ovoid or cylindric, 25-35 × 20-25 mm, glabrous. <b>Cotyledons</b> distinct.</span><!-- |
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|elevation=0-600 m | |elevation=0-600 m | ||
|distribution=Ala.;Ark.;Del.;Fla.;Ga.;Ill.;Ind.;Ky.;La.;Md.;Miss.;Mo.;N.J.;N.C.;Pa.;S.C.;Tenn.;Tex.;Va. | |distribution=Ala.;Ark.;Del.;Fla.;Ga.;Ill.;Ind.;Ky.;La.;Md.;Miss.;Mo.;N.J.;N.C.;Pa.;S.C.;Tenn.;Tex.;Va. | ||
| − | |discussion=<p>Quercus michauxii is easily distinguished from other chestnut-leaved oaks by the felty hairs of the abaxial leaf surface and rather large acorn cups with attenuate-acute, loose scales. This species is no longer extant in Oklahoma. Historical reports from Connecticut, Massachusetts, and New York have not been confirmed; possibly populations are no longer extant. (See Quercus montana for a discussion of nomenclature and the uncertain application of the name Q. prinus).</p> | + | |discussion=<p><i>Quercus michauxii</i> is easily distinguished from other chestnut-leaved oaks by the felty hairs of the abaxial leaf surface and rather large acorn cups with attenuate-acute, loose scales. This species is no longer extant in Oklahoma. Historical reports from Connecticut, Massachusetts, and New York have not been confirmed; possibly populations are no longer extant. (See <i>Quercus montana</i> for a discussion of nomenclature and the uncertain application of the name Q. prinus).</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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name=Quercus michauxii | name=Quercus michauxii | ||
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|authority=Nuttall | |authority=Nuttall | ||
|rank=species | |rank=species | ||
|parent rank=section | |parent rank=section | ||
| − | |synonyms= | + | |synonyms=Quercus houstoniana |
|basionyms= | |basionyms= | ||
|family=Fagaceae | |family=Fagaceae | ||
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|publication title=Gen. N. Amer. Pl. | |publication title=Gen. N. Amer. Pl. | ||
|publication year=1818 | |publication year=1818 | ||
| − | |special status=Endemic; | + | |special status=Endemic;Illustrated |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V3/V3_754.xml |
|genus=Quercus | |genus=Quercus | ||
|section=Quercus sect. Quercus | |section=Quercus sect. Quercus | ||
|species=Quercus michauxii | |species=Quercus michauxii | ||
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Latest revision as of 21:51, 5 November 2020
Trees, deciduous, to 20 m. Bark light brown or gray, scaly. Twigs brown or reddish brown, 2-3 mm diam., with sparse spreading hairs or glabrate. Buds reddish brown, ovoid, apex rounded or acute, glabrous or minutely puberulent. Leaves: petiole 5-20 mm. Leaf blade broadly obovate or broadly elliptic, (60-)100-280 × 50-180 mm, base rounded-acuminate or broadly cuneate, margins regularly toothed, teeth rounded, dentate, or acuminate, secondary veins 15-20 on each side, parallel, straight or somewhat curved, apex broadly rounded or acuminate; surfaces abaxially light green or yellowish, felty to touch because of conspicuous or minute, erect, 1-4-rayed hairs, adaxially glabrous or with minute simple or fascicled hairs. Acorns 1-3, subsessile or more often on axillary peduncle to 20-30 mm; cup hemispheric, broadly hemispheric or even short-cylindric, 15-25 mm deep × 25-40 mm wide, enclosing 1/2 nut or more, scales very loosely appressed, distinct to base, gray or light brown, moderately to heavily tuberculate, tips silky-tomentose; nut light brown, ovoid or cylindric, 25-35 × 20-25 mm, glabrous. Cotyledons distinct.
Phenology: Flowering early–late spring.
Habitat: Bottomlands, rich sandy woods and swamps, on variety of soils
Elevation: 0-600 m
Distribution
Ala., Ark., Del., Fla., Ga., Ill., Ind., Ky., La., Md., Miss., Mo., N.J., N.C., Pa., S.C., Tenn., Tex., Va.
Discussion
Quercus michauxii is easily distinguished from other chestnut-leaved oaks by the felty hairs of the abaxial leaf surface and rather large acorn cups with attenuate-acute, loose scales. This species is no longer extant in Oklahoma. Historical reports from Connecticut, Massachusetts, and New York have not been confirmed; possibly populations are no longer extant. (See Quercus montana for a discussion of nomenclature and the uncertain application of the name Q. prinus).
Selected References
None.
Lower Taxa
None.