Difference between revisions of "Quercus grisea"
Overs. Kongel. Danske Vidensk. Selsk. Forh. Medlemmers Arbeider 1854: 171. 1854.
Common names: Gray oak
Selected by author to be illustrated
Basionym: Variety (Liebmann) Engelmann
Treatment appears in FNA Volume 3.
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Large </b>shrubs or moderate trees, deciduous or subevergreen, to 10 m. <b>Bark</b> gray, fissured. <b>Twigs</b> gray, 1-2 mm diam., sparsely or densely stellate-tomentulose or tomentose when young. <b>Buds</b> dark red-brown, ovoid to subglobose, 1-2 mm, stellate hairs causing yellowish color, at least on outer scales; stipules persistent, 1-4, subulate, pubescent, at base of terminal buds. <b>Leaves</b>: petiole 3-10 mm. <b>Leaf</b> blade oblong to elliptic or ovate, (15-)25-35(-80) × (7-)15-30(-40) mm, thick and leathery, base cordate or rounded, margins minutely revolute, entire or dentate with mucronate teeth, secondary veins 6-10 on each side, branched, apex acute, sometimes obtuse, rarely rounded; surfaces abaxially dull gray-green or yellowish, minutely stellate-pubescent with interlocking hairs, secondary veins very prominent, adaxially dull green, very sparsely and minutely stellate-pubescent, secondary veins slightly raised. <b>Acorns</b> solitary or paired, subsessile or on peduncle 0-30 mm; cup from deeply goblet- to deeply cup-shaped, 4-10 mm deep × 8-15 mm wide, enclosing to 1/2 nut, scales broadly ovate to oblong, proximal scales slightly or markedly tuberculate and whitish canescent, tips closely appressed, red-brown, thin, glabrate; nut light brown, ovoid to narrowly ovoid or ellipsoid, 12-18 × 8-12 mm. <b>Cotyledons</b> connate.</span><!-- |
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|habitat=Igneous or dolomitic slopes, oak woodlands, juniper woodlands, desert chaparral | |habitat=Igneous or dolomitic slopes, oak woodlands, juniper woodlands, desert chaparral | ||
|elevation=usually above 1500 m | |elevation=usually above 1500 m | ||
| − | |distribution=Ariz.;N.Mex.;Tex.;Mexico (Sonora | + | |distribution=Ariz.;N.Mex.;Tex.;Mexico (Sonora;Chihuahua;and Durango). |
|discussion=<p>Some of the specimens referred to Quercus endemica by C. H. Muller should be placed in Q. grisea.</p><!-- | |discussion=<p>Some of the specimens referred to Quercus endemica by C. H. Muller should be placed in Q. grisea.</p><!-- | ||
--><p>Numerous hybrids between Quercus grisea and other white oaks, including Q. gambelii, Q. mohriana, Q. arizonica, and numerous species in northern Mexico, have been reported. In the Hueco and Quitman mountains of trans-Pecos Texas, putative hybrids of Q. grisea × Q. turbinella Greene occur.</p> | --><p>Numerous hybrids between Quercus grisea and other white oaks, including Q. gambelii, Q. mohriana, Q. arizonica, and numerous species in northern Mexico, have been reported. In the Hueco and Quitman mountains of trans-Pecos Texas, putative hybrids of Q. grisea × Q. turbinella Greene occur.</p> | ||
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|habitat=Igneous or dolomitic slopes, oak woodlands, juniper woodlands, desert chaparral | |habitat=Igneous or dolomitic slopes, oak woodlands, juniper woodlands, desert chaparral | ||
|elevation=usually above 1500 m | |elevation=usually above 1500 m | ||
| − | |distribution=Ariz.;N.Mex.;Tex.;Mexico (Sonora | + | |distribution=Ariz.;N.Mex.;Tex.;Mexico (Sonora;Chihuahua;and Durango). |
|reference=None | |reference=None | ||
|publication title=Overs. Kongel. Danske Vidensk. Selsk. Forh. Medlemmers Arbeider | |publication title=Overs. Kongel. Danske Vidensk. Selsk. Forh. Medlemmers Arbeider | ||
|publication year=1854 | |publication year=1854 | ||
|special status=Selected by author to be illustrated | |special status=Selected by author to be illustrated | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna- | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V3/V3_1146.xml |
|genus=Quercus | |genus=Quercus | ||
|section=Quercus sect. Quercus | |section=Quercus sect. Quercus | ||
|species=Quercus grisea | |species=Quercus grisea | ||
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-->[[Category:Treatment]][[Category:Quercus sect. Quercus]] | -->[[Category:Treatment]][[Category:Quercus sect. Quercus]] | ||
Revision as of 13:32, 27 July 2019
Large shrubs or moderate trees, deciduous or subevergreen, to 10 m. Bark gray, fissured. Twigs gray, 1-2 mm diam., sparsely or densely stellate-tomentulose or tomentose when young. Buds dark red-brown, ovoid to subglobose, 1-2 mm, stellate hairs causing yellowish color, at least on outer scales; stipules persistent, 1-4, subulate, pubescent, at base of terminal buds. Leaves: petiole 3-10 mm. Leaf blade oblong to elliptic or ovate, (15-)25-35(-80) × (7-)15-30(-40) mm, thick and leathery, base cordate or rounded, margins minutely revolute, entire or dentate with mucronate teeth, secondary veins 6-10 on each side, branched, apex acute, sometimes obtuse, rarely rounded; surfaces abaxially dull gray-green or yellowish, minutely stellate-pubescent with interlocking hairs, secondary veins very prominent, adaxially dull green, very sparsely and minutely stellate-pubescent, secondary veins slightly raised. Acorns solitary or paired, subsessile or on peduncle 0-30 mm; cup from deeply goblet- to deeply cup-shaped, 4-10 mm deep × 8-15 mm wide, enclosing to 1/2 nut, scales broadly ovate to oblong, proximal scales slightly or markedly tuberculate and whitish canescent, tips closely appressed, red-brown, thin, glabrate; nut light brown, ovoid to narrowly ovoid or ellipsoid, 12-18 × 8-12 mm. Cotyledons connate.
Phenology: Flowering spring.
Habitat: Igneous or dolomitic slopes, oak woodlands, juniper woodlands, desert chaparral
Elevation: usually above 1500 m
Distribution
Ariz., N.Mex., Tex., Mexico (Sonora, Chihuahua, and Durango).
Discussion
Some of the specimens referred to Quercus endemica by C. H. Muller should be placed in Q. grisea.
Numerous hybrids between Quercus grisea and other white oaks, including Q. gambelii, Q. mohriana, Q. arizonica, and numerous species in northern Mexico, have been reported. In the Hueco and Quitman mountains of trans-Pecos Texas, putative hybrids of Q. grisea × Q. turbinella Greene occur.
Selected References
None.
Lower Taxa
None.