View source for Quercus nigra

{{Treatment/ID
|accepted_name=Quercus nigra
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 995. 1753
|year=1753
}}
|common_names=Water oak;chêne gris
|special_status={{Treatment/ID/Special_status
|code=W1
|label=
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}{{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Quercus nana
|authority=Willdenow
|rank=species
}} {{Treatment/ID/Synonym
|name=Quercus nigra var. tridentifera
|authority=Sargent
|rank=variety
}} {{Treatment/ID/Synonym
|name=Quercus uliginosa
|authority=
|rank=species
}}
|hierarchy=Fagaceae;Quercus;Quercus sect. Lobatae;Quercus nigra
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Fagaceae]]</div><div class="higher-taxon"><small>genus</small>[[Quercus]]</div><div class="higher-taxon"><small>section</small>[[Quercus sect. Lobatae]]</div><div class="higher-taxon"><small>species</small>[[Quercus nigra]]</div></div>
|volume=Volume 3
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Trees,</b> deciduous or tardily deciduous, to 30 m. <b>Bark</b> grayish black, fissures irregular, shallow, inner bark pinkish. <b>Twigs</b> dark red-brown, 1.5-2.5 mm diam., glabrous. <b>Terminal</b> buds reddish brown, ovoid, 3-6.5 mm, puberulent throughout, occasionally densely pubescent on apical 2/3. <b>Leaves</b>: petiole 2-9 mm, glabrous. <b>Leaf</b> blade distinctly obtrullate, rarely elliptic or merely obovate, widest near apex, 30-120(-160) × 15-60(-70) mm, base attenuate or cuneate, rarely rounded, margins entire with 1 apical awn or with 2-3 shallow lobes and 2-5 awns (leaves on juvenile or 2d-flush growth may be deeply lobed with more awns), apex obtuse to blunt or rounded; surfaces abaxially glabrous except for minute or conspicuous axillary tufts of tomentum, veins rarely raised, adaxially glabrous with secondary veins somewhat impressed. <b>Acorns</b> biennial; cup saucer-shaped, 2.5-5.5 mm high × 10-18 mm wide, covering 1/4 nut or less, outer surface puberulent, inner surface sparsely to uniformly pubescent, scale tips tightly appressed, acute; nut broadly ovoid, 9.5-14 × 9.5-14.5 mm, often faintly striate, glabrate, scar diam. 6-11.5 mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring.
|habitat=Mesic alluvial and lowland sites, also barrens, dunes, hammocks, and low ridges to steep slopes
|elevation=0-450 m
|distribution=Ala.;Ark.;Del.;Fla.;Ga.;Ky.;La.;Md.;Miss.;Mo.;N.J.;N.C.;Okla.;S.C.;Tenn.;Tex.;Va.
|discussion=<p>Typically on mesic alluvial and lowland sites, <i>Quercus nigra</i> also occurs on a wide variety of soil types and in a diversity of habitats.</p><!--
--><p>Trees with 3-lobed leaves with attenuate bases have been recognized as <i>Quercus nigra</i> var. tridentifera Sargent.</p><!--
--><p><i>Quercus nigra</i> reportedly hybridizes with <i>Q. falcata</i> (= Q. ×garlandensis E. J. Palmer), <i>Q. incana</i>, <i>Q. laevis</i> (= Q. ×walteriana Ashe), <i>Q. marilandica</i> (= Q. ×sterilis Trelease), <i>Q. phellos</i> (= Q. ×capesii W. Wolf), <i>Q. shumardii</i> (= Q. ×neopalmeri Sudworth), and <i>Q. velutina</i> (Q. ×demarei Ashe). In addition, D. M. Hunt (1989) cited evidence of hybridization also with <i>Q. arkansana</i>, <i>Q. georgiana</i>, <i>Q. hemisphaerica</i>, <i>Q. laurifolia</i>, <i>Q. myrtifolia</i>, <i>Q. palustris</i>, <i>Q. rubra</i>, and <i>Q. texana</i>.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Quercus nigra
|authority=Linnaeus
|rank=species
|parent rank=section
|synonyms=Quercus nana;Quercus nigra var. tridentifera;Quercus uliginosa
|basionyms=
|family=Fagaceae
|phenology=Flowering spring.
|habitat=Mesic alluvial and lowland sites, also barrens, dunes, hammocks, and low ridges to steep slopes
|elevation=0-450 m
|distribution=Ala.;Ark.;Del.;Fla.;Ga.;Ky.;La.;Md.;Miss.;Mo.;N.J.;N.C.;Okla.;S.C.;Tenn.;Tex.;Va.
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=W1;Endemic;Illustrated
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V3/V3_388.xml
|genus=Quercus
|section=Quercus sect. Lobatae
|species=Quercus nigra
}}<!--

-->[[Category:Treatment]][[Category:Quercus sect. Lobatae]]