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Chihuahuan Oak

Quercus chihuahuensis Trel.

Comments

provided by eFloras
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.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 3 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of North America @ eFloras.org
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Description

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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.
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cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 3 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
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visit source
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eFloras

Distribution

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Tex.; Mexico (Chihuahua, Sonora, Zacatecas, and San Luis Potosí).
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 3 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
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eFloras

Flowering/Fruiting

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Flowering spring.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 3 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
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eFloras.org
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Habitat

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Oak and pinyon-juniper woodlands, grassy hills, sometimes extending into dry thorn scrub and bursera woodland (Mexico); 400-2000m.
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cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 3 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
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eFloras

Synonym

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Quercus infralutea Trelease; Q. jaliscensis Trelease; Q. santaclarensis C. H. Muller
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cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 3 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Quercus chihuahuensis

provided by wikipedia EN

Quercus chihuahuensis, the Chihuahua oak, is a species of oak in the beech family.[2] It is native to the region from extreme western Texas west to Sonora and south to Zacatecas and San Luís Potosí. It grows mostly at mid elevations (400–2000 m) in forests mixed with various pines and other oaks. It is one of the dominant species of the Sierra Madre Occidental in Chihuahua and Sonora.[3][4][5]

Quercus chihuahuensis is a tree up to 10 meters (33 feet) tall, very common in much of its range. Leaves are entire to toothed or sublobate, green on the top but yellow or gray on the underside because of a coating of velvety, stellate (star-shaped, highly branched) hairs. The species is related to Quercus arizonica and Quercus grisea, sometimes hybridizing with these two species in Texas.[2][6][7]

References

  1. ^ "Quercus chihuahuensis Trel.". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew – via The Plant List.
  2. ^ a b Trelease, Memoirs of the National Academy of Science vol 20. 1924.
  3. ^ Stanley, P.C. 1922. Trees and Shrubs of Mexico. Contributions from the United States National Herbarium 23(2).
  4. ^ CONABIO. 2009. Catálogo taxonómico de especies de México. 1. In Capital Nat. México. CONABIO, Mexico City.
  5. ^ SEINet, Southwestern Biodiversity, Arizona chapter
  6. ^ Nixon, Kevin C. (1997). "Quercus chihuahuensis". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). 3. New York and Oxford – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  7. ^ Nixon, K. C. 1993b. The genus Quercus in Mexico. In: T. P. Ramamoorthy et al., eds. 1993. Biological Diversity of Mexico: Origin and Distribution. New York. Pp. 447-458.
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Quercus chihuahuensis: Brief Summary

provided by wikipedia EN

Quercus chihuahuensis, the Chihuahua oak, is a species of oak in the beech family. It is native to the region from extreme western Texas west to Sonora and south to Zacatecas and San Luís Potosí. It grows mostly at mid elevations (400–2000 m) in forests mixed with various pines and other oaks. It is one of the dominant species of the Sierra Madre Occidental in Chihuahua and Sonora.

Quercus chihuahuensis is a tree up to 10 meters (33 feet) tall, very common in much of its range. Leaves are entire to toothed or sublobate, green on the top but yellow or gray on the underside because of a coating of velvety, stellate (star-shaped, highly branched) hairs. The species is related to Quercus arizonica and Quercus grisea, sometimes hybridizing with these two species in Texas.

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