Difference between revisions of "Quercus chihuahuensis"
Mem. Natl. Acad. Sci. 20: 85. 1924.
Common names: Chihuahua oak felt oak
Selected by author to be illustrated
Synonyms: Species TreleaseSpecies TreleaseSpecies C. H. Muller
Treatment appears in FNA Volume 3.
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Shrubs </b>or trees, deciduous, to 10 m. <b>Bark</b> gray, furrowed, checkered, or scaly. <b>Twigs</b> gray, 2-3(-4) mm diam., densely tomentose. <b>Buds</b> reddish brown, broadly ovoid, distally rounded, 2-2.5 mm, densely yellowish pubescent; scales gray-puberulent; stipules persistent, 1-4, subulate, pubescent, at base of terminal buds. <b>Leaves</b>: petiole 3-5(-8) mm. <b>Leaf</b> blade elliptic or oblong to ovate or obovate, (25-)40-50(-85) × (18-)20-30(-50) mm, base rounded or shallowly cordate, margins entire or toothed to sublobate, secondary veins 8 to 10 on each side, somewhat branching, apex broadly rounded to acute; surfaces abaxially yellowish or grayish, densely stellate with velvety hairs, adaxially green, sparsely soft-pubescent with prominent, spreading, stellate hairs, felty to touch, secondary veins somewhat prominent on both surfaces, even under dense tomentum. <b>Acorns</b> 1-3 on tomentose peduncle 15-35(-60) mm; cup hemispheric, 7-10 mm deep × 10-15 mm wide, enclosing 1/2 nut, scales proximally thickened, distally appressed, densely gray-puberulent, tips reddish, ultimately glabrate; nut ovoid, 14-18 × 10-12 mm, puberulent, eventually glabrate. <b>Cotyledons</b> connate.</span><!-- |
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|habitat=Oak and pinyon-juniper woodlands, grassy hills, sometimes extending into dry thorn scrub and bursera woodland (Mexico) | |habitat=Oak and pinyon-juniper woodlands, grassy hills, sometimes extending into dry thorn scrub and bursera woodland (Mexico) | ||
|elevation=400-2000 m | |elevation=400-2000 m | ||
| − | |distribution=Tex.;Mexico (Chihuahua | + | |distribution=Tex.;Mexico (Chihuahua;Sonora;Zacatecas;and San Luis Potosí). |
|discussion=<p>Quercus chihuahuensis is a distinctive species throughout its range, mostly in dry montane western Mexico; it occurs in the United States only as putative hybrids with Q. grisea (the Eagle and Quitman mountains) and Q. arizonica (Hueco Tanks) in Texas.</p> | |discussion=<p>Quercus chihuahuensis is a distinctive species throughout its range, mostly in dry montane western Mexico; it occurs in the United States only as putative hybrids with Q. grisea (the Eagle and Quitman mountains) and Q. arizonica (Hueco Tanks) in Texas.</p> | ||
|tables= | |tables= | ||
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|habitat=Oak and pinyon-juniper woodlands, grassy hills, sometimes extending into dry thorn scrub and bursera woodland (Mexico) | |habitat=Oak and pinyon-juniper woodlands, grassy hills, sometimes extending into dry thorn scrub and bursera woodland (Mexico) | ||
|elevation=400-2000 m | |elevation=400-2000 m | ||
| − | |distribution=Tex.;Mexico (Chihuahua | + | |distribution=Tex.;Mexico (Chihuahua;Sonora;Zacatecas;and San Luis Potosí). |
|reference=None | |reference=None | ||
|publication title=Mem. Natl. Acad. Sci. | |publication title=Mem. Natl. Acad. Sci. | ||
|publication year=1924 | |publication year=1924 | ||
|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_607.xml |
|genus=Quercus | |genus=Quercus | ||
|section=Quercus sect. Quercus | |section=Quercus sect. Quercus | ||
|species=Quercus chihuahuensis | |species=Quercus chihuahuensis | ||
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Revision as of 13:44, 27 July 2019
Shrubs or trees, deciduous, to 10 m. Bark gray, furrowed, checkered, or scaly. Twigs gray, 2-3(-4) mm diam., densely tomentose. Buds reddish brown, broadly ovoid, distally rounded, 2-2.5 mm, densely yellowish pubescent; scales gray-puberulent; stipules persistent, 1-4, subulate, pubescent, at base of terminal buds. Leaves: petiole 3-5(-8) mm. Leaf blade elliptic or oblong to ovate or obovate, (25-)40-50(-85) × (18-)20-30(-50) mm, base rounded or shallowly cordate, margins entire or toothed to sublobate, secondary veins 8 to 10 on each side, somewhat branching, apex broadly rounded to acute; surfaces abaxially yellowish or grayish, densely stellate with velvety hairs, adaxially green, sparsely soft-pubescent with prominent, spreading, stellate hairs, felty to touch, secondary veins somewhat prominent on both surfaces, even under dense tomentum. Acorns 1-3 on tomentose peduncle 15-35(-60) mm; cup hemispheric, 7-10 mm deep × 10-15 mm wide, enclosing 1/2 nut, scales proximally thickened, distally appressed, densely gray-puberulent, tips reddish, ultimately glabrate; nut ovoid, 14-18 × 10-12 mm, puberulent, eventually glabrate. Cotyledons connate.
Phenology: Flowering spring.
Habitat: Oak and pinyon-juniper woodlands, grassy hills, sometimes extending into dry thorn scrub and bursera woodland (Mexico)
Elevation: 400-2000 m
Distribution
Tex., Mexico (Chihuahua, Sonora, Zacatecas, and San Luis Potosí).
Discussion
Quercus chihuahuensis is a distinctive species throughout its range, mostly in dry montane western Mexico; it occurs in the United States only as putative hybrids with Q. grisea (the Eagle and Quitman mountains) and Q. arizonica (Hueco Tanks) in Texas.
Selected References
None.
Lower Taxa
None.