View source for Quercus arkansana

{{Treatment/ID
|accepted_name=Quercus arkansana
|accepted_authority=Sargent
|publications={{Treatment/Publication
|title=Trees & Shrubs
|place=2: 121. 1911
|year=1911
}}
|common_names=Arkansas oak
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}{{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Quercus caput-rivuli
|authority=Ashe
|rank=species
}}
|hierarchy=Fagaceae;Quercus;Quercus sect. Lobatae;Quercus arkansana
|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 arkansana]]</div></div>
|volume=Volume 3
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Trees,</b> deciduous, to 15 m. <b>Bark</b> black with long rough ridges separated by deep furrows. <b>Twigs</b> 1.5-3 mm diam., gray-pubescent, rarely glabrate. <b>Terminal</b> buds red-brown, ovoid, 2-5 mm, glabrous or with scales somewhat ciliate on margins, especially at apex. <b>Leaves</b>: petiole 5-25 mm, pubescent, rarely glabrate. <b>Leaf</b> blade rhombic to obovate or obtrullate, 50-150 × 35-100 mm, base acute to cordate, margins entire or with 2-3 shallow lobes and up to 10 awns, apex broadly obtuse to rounded; surfaces abaxially uniformly pubescent to glabrous except for conspicuous axillary tufts of tomentum, veins prominent, adaxially planar or somewhat rugose with a few persistent hairs near base. <b>Acorns</b> biennial; cup thin, shallow goblet- to almost saucer-shaped, 5-9 mm high × 10-16 mm wide, covering 1/4-1/2 nut, outer surface puberulent, inner surface sparsely to uniformly pubescent, scale tips appressed, acute; nut broadly ellipsoid to subglobose, 10-15 × 9-15 mm, puberulent, scar diam. 5-10 mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring.
|habitat=An understory tree of well-drained, sandy soils, on ravine heads (pocosins, steepheads)
|elevation=50-150 m
|distribution=Ala.;Ark.;Fla.;Ga.;La.;Tex.
|discussion=<p><i>Quercus arkansana</i> reportedly hybridizes with <i>Q. incana</i> (= Q. ×venulosa Ashe) and <i>Q. nigra</i> (D. M. Hunt 1986; W. H. Duncan and M. B. Duncan 1988). While agreeing that an isotype of the former clearly indicated a relationship to <i>Q. arkansana</i>, E. J. Palmer (1948) questioned the identity of the second parent and noted that venulosa is a homonym of a fossil species. In addition, D. M. Hunt (1989) cited evidence of hybridization with <i>Q. hemisphaerica</i>, <i>Q. laevis</i>, <i>Q. marilandica</i>, <i>Q. myrtifolia</i>, and either <i>Q. falcata</i> or <i>Q. velutina</i>.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Quercus arkansana
|authority=Sargent
|rank=species
|parent rank=section
|synonyms=Quercus caput-rivuli
|basionyms=
|family=Fagaceae
|phenology=Flowering spring.
|habitat=An understory tree of well-drained, sandy soils, on ravine heads (pocosins, steepheads)
|elevation=50-150 m
|distribution=Ala.;Ark.;Fla.;Ga.;La.;Tex.
|reference=None
|publication title=Trees & Shrubs
|publication year=1911
|special status=Endemic;Illustrated
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V3/V3_1078.xml
|genus=Quercus
|section=Quercus sect. Lobatae
|species=Quercus arkansana
}}<!--

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