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Ajo Mountain Scrub Oak

Quercus ajoensis C. H. Mull.

Comments

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Populations of Quercus ajoensis in southern New Mexico show characteristics suggesting introgression from hybridization with Quercus toumeyi , such as increased twig and leaf pubescence and sometimes the prominent golden puberulum of the abaxial leaf surfaces. Hybrids between Q . ajoensis and both Q . turbinella and Q . gambelii (Utah) are also known.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
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Flora of North America Vol. 3 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Description

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Shrubs, rarely trees , evergreen, to 2-3 m. Bark gray, scaly or furrowed. Twigs light brown, 1-2 mm diam., inconspicuously short stellate-pubescent or glabrate. Buds brown or reddish brown, ovoid or globose, 1-1.5 mm, variously short stellate-pubescent, tomentose, or glabrate. Leaves: petiole (2-)3-4 m. Leaf blade ovate to narrowly ovate or oblong, (10-)15-35(-50) × (5-)10-20(-30) mm, rather leathery, base cordate, rarely rounded, margins crispate, sometimes flat, cartilaginous, with 4-6(-8) long-attenuate, spinose-awned teeth on each side, secondary veins 5-8 on each side, whitish, apex acute or obtuse with bristly distal teeth; surfaces abaxially blue-green, waxy-glaucous, microscopically papillose, glabrous, sometimes sparsely stellate-pubescent along midrib, adaxially blue-green, glaucous, glabrous or sparingly stellate-pubescent along midrib, secondary veins raised on both surfaces. Acorns solitary or paired on thin axillary peduncle (5-)30-50 mm; cup shallowly cup-shaped, thin, 3-4 mm deep × 6-8(-10) mm wide, enclosing only base of nut, scales brownish, moderately tuberculate, pubescent; nut oblong to narrowly ovoid, 12-15 × 5-8 mm. Cotyledons distinct.
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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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Distribution

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Ariz.; Mexico (Baja California).
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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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Flowering/Fruiting

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Flowering in 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.
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Habitat

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Rare to locally abundant on igneous slopes; 500-1500m.
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bibliographic citation
Flora of North America Vol. 3 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Synonym

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Quercus turbinella Greene subsp. ajoensis (C. H. Muller) Felger & C. H. Lowe; Q. turbinella var. ajoensis (C. H. Muller) Little
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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
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Quercus ajoensis ( Catalan; Valencian )

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Quercus ajoensis és un tipus de roure que pertany a la família de les fagàcies i està dins de la secció dels roures blancs.

Distribució i hàbitat

És nativa d'Arizona, Nou Mèxic, Colorado i Baixa Califòrnia. Generalment són arbustos, però de vegades arriben a l'alçada d'arbres petits de fins a 3 m d'alçada.

Descripció

És un arbust perennifoli que pot arribar entre 2,3 m a 3,2 m d'alçada, rarament pot arribar a ser d'un arbre. Les fulles són coriàcies de color blau-verd, llises en ambdós costats, a prop de 3 x 2 cm, ondulades i generalment els marges entre 4-6 dents espinosos a cada costat. Les glans maduren durant el primer any, fan 15 cm de llarg, neixen soles o en parelles, la copa poc profunda i generalment menys d'1 cm de diàmetre.

Taxonomia

Quercus ajoensis va ser descrita per Cornelius Herman Muller i publicat a Madroño 12(5): 140–145, f. 1. 1954.[1]

Etimologia

Quercus: nom genèric del llatí que designava igualment al roure i a l'alzina.

ajoensis: epítet geogràfic que es nomena per les Muntanyes Ajo, a l'oest del Comtat de Pima, Arizona.[2]

Sinonimia
  • Quercus turbinella var. ajoensis (C.H.Mull.) Little
  • Quercus turbinella subsp. ajoensis (C.H.Mull.) Felger & C.H.Lowe[3][4]

Vegeu també

Referències

  1. «Quercus ajoensis». Tropicos.org. Missouri Botanical Garden. [Consulta: 18 juliol 2014].
  2. Flora of North America, vol 3. 1997.
  3. «Quercus ajoensis». Royal Botanic Gardens, Kew: World Checklist of Selected Plant Families. [Consulta: 18 juliol 2014].
  4. «Quercus ajoensis». The Plant List. [Consulta: 18 juliol 2014].

Bibliografia

  1. CONABIO. 2009. Catálogo taxonómico de especies de México. 1. In Capital Nat. México. CONABIO, Mexico City.
  2. Flora of North America Editorial Committee, e. 1997. Magnoliidae and Hamamelidae. Fl. N. Amer. 3: i–xxiii, 1–590.
  3. Shreve, F. & I. L. Wiggins. 1964. Veg. Fl. Sonoran Des. 2 vols. Stanford University Press, Stanford.

Enllaços externs

 src= A Wikimedia Commons hi ha contingut multimèdia relatiu a: Quercus ajoensis Modifica l'enllaç a Wikidata
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Quercus ajoensis: Brief Summary ( Catalan; Valencian )

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Quercus ajoensis és un tipus de roure que pertany a la família de les fagàcies i està dins de la secció dels roures blancs.

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Quercus ajoensis

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Quercus ajoensis is an uncommon North American shrub with the common name Ajo Mountain shrub oak. It has been found in Arizona mountain ranges of the Colorado desert, and Arizona uplands of the Sonoran desert.[3][4] Q. ajoensis integrates with Q. turbinella and is difficult to determine specimen identification due to hybridization. It appears that this species is an elevation variant of Q. turbinella and is best treated as a subspecies or variety as it has been treated in the past. The status of Q. ajoensis as a species is probably unnecessary due to complete integration with Q. turbinella or it being a low elevation variant of Q. turbinella.[5]

Q. ajoensis is usually a shrub but occasionally attains the stature of small trees up to 3 metres (10 feet) tall. The leaves are narrowly egg-shaped, up to 5 centimetres (2 inches) long, with sharp pointed teeth.[5]

The species is named for the Ajo Mountains in western Pima County, Arizona, southwest of the town of Ajo. The species does not occur as an identifiable species outside the Ajo mountain range and most specimens are of integrated types with Q. turbinella.[5] The word "ajo" is Spanish for "garlic."

References

  1. ^ Kenny, L.; Wenzell, K.; Jerome, D. (2020). "Quercus ajoensis". IUCN Red List of Threatened Species. 2020: e.T194050A171680879. doi:10.2305/IUCN.UK.2020-2.RLTS.T194050A171680879.en. Retrieved 12 November 2021.
  2. ^ "Quercus ajoensis C.H.Mull.". World Checklist of Selected Plant Families. Royal Botanic Gardens, Kew – via The Plant List. Note that this website has been superseded by World Flora Online
  3. ^ SEINet, Southwestern biodiversity, Arizona chapter
  4. ^ "Quercus ajoensis". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014.
  5. ^ a b c Nixon, Kevin C. (1997). "Quercus ajoensis". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 3. New York and Oxford – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

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Quercus ajoensis: Brief Summary

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Quercus ajoensis is an uncommon North American shrub with the common name Ajo Mountain shrub oak. It has been found in Arizona mountain ranges of the Colorado desert, and Arizona uplands of the Sonoran desert. Q. ajoensis integrates with Q. turbinella and is difficult to determine specimen identification due to hybridization. It appears that this species is an elevation variant of Q. turbinella and is best treated as a subspecies or variety as it has been treated in the past. The status of Q. ajoensis as a species is probably unnecessary due to complete integration with Q. turbinella or it being a low elevation variant of Q. turbinella.

Q. ajoensis is usually a shrub but occasionally attains the stature of small trees up to 3 metres (10 feet) tall. The leaves are narrowly egg-shaped, up to 5 centimetres (2 inches) long, with sharp pointed teeth.

The species is named for the Ajo Mountains in western Pima County, Arizona, southwest of the town of Ajo. The species does not occur as an identifiable species outside the Ajo mountain range and most specimens are of integrated types with Q. turbinella. The word "ajo" is Spanish for "garlic."

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Quercus ajoensis ( Spanish; Castilian )

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Quercus ajoensis Mull. es una especie del género Quercus de la familia Fagaceae.

Distribución y hábitat

Es originaria de Arizona, Nuevo México, Colorado y Baja California.

Descripción

Quercus ajoensis es un arbusto o pequeño árbol de hoja perenne que puede alcanzar entre 2,3 m y 3,2 m de altura. Las hojas son coriáceas de color verde azulado, lisas por ambos lados, con un tamaño de unos 3 x 2 cm, con lóbulos en forma de puntas agudas. Las bellotas maduran durante el primer año, miden 15 cm de largo, se encuentran solas o en pares, y tienen la copa poco profunda y generalmente de menos de 1 cm de diámetro.

Taxonomía

Quercus ajoensis fue descrito por Cornelius Herman Muller y publicado en Madroño 12(5): 140–145, f. 1. 1954.[1]

Etimología

Quercus: nombre genérico del latín que designaba igualmente el roble y la encina.

ajoensis: epíteto geográfico que se nombra por las Montañas Ajo, en el oeste del Condado de Pima, Arizona.[2]

Sinonimia
  • Quercus turbinella var. ajoensis (C.H.Mull.) Little
  • Quercus turbinella subsp. ajoensis (C.H.Mull.) Felger & C.H.Lowe[3][4]

Referencias

  1. «Quercus ajoensis». Tropicos.org. Missouri Botanical Garden. Consultado el 18 de julio de 2014.
  2. Flora of North America, vol 3. 1997.
  3. «Quercus ajoensis». Royal Botanic Gardens, Kew: World Checklist of Selected Plant Families. Consultado el 18 de julio de 2014.
  4. «Quercus ajoensis». The Plant List. Consultado el 18 de julio de 2014.

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Quercus ajoensis: Brief Summary ( Spanish; Castilian )

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Quercus ajoensis Mull. es una especie del género Quercus de la familia Fagaceae.

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Quercus ajoensis ( French )

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Distribution

Quercus ajoensis est une espèce d'arbres du sous-genre Quercus et de la section Quercus. L'espèce est présente au Mexique et aux États-Unis.

Notes et références

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Quercus ajoensis: Brief Summary ( French )

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 src= Distribution

Quercus ajoensis est une espèce d'arbres du sous-genre Quercus et de la section Quercus. L'espèce est présente au Mexique et aux États-Unis.

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Quercus ajoensis ( Polish )

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Quercus ajoensis Liebm. – gatunek roślin z rodziny bukowatych (Fagaceae Dumort.). Występuje naturalnie w północno-zachodnim Meksyku (w stanie Kalifornia Dolna) oraz południowo-zachodnich Stanach Zjednoczonych (w Arizonie i Kolorado)[3][4][5].

Morfologia

Pokrój
Zimozielony krzew dorastający do 2–3 m wysokości. Kora ma szarą barwę[5].
Liście
Blaszka liściowa jest skórzasta i ma kształt od owalnego do podługowatego. Mierzy 1,5–3,5 cm długości oraz 1–2 cm szerokości, jest mniej lub bardziej ząbkowana na brzegu, ma sercowatą nasadę i tępy lub ostry wierzchołek. Ogonek liściowy jest nagi i ma 3–4 mm długości[5].
Owoce
Orzechy zwane żołędziami o kształcie od jajowatego do podługowatego, dorastają do 12–15 mm długości i 5–8 mm średnicy. Osadzone są pojedynczo w miseczkach w kształcie kubka, które mierzą 3–4 mm długości i 6–8 mm średnicy. Orzechy otulone są w miseczkach do 10–25% ich długości[5].

Biologia i ekologia

Rośnie na skalistych zboczach. Występuje na wysokości od 500 do 1500 m n.p.m.[5]

Przypisy

  1. Stevens P.F.: Angiosperm Phylogeny Website (ang.). 2001–. [dostęp 2017-03-13].
  2. a b Quercus ajoensis C.H.Mull. (ang.). The Plant List. [dostęp 13 marca 2017].
  3. Discover Life: Point Map of Quercus ajoensis (ang.). Encyclopedia of Life. [dostęp 13 marca 2017].
  4. Comprehensive Report Species - Quercus ajoensis (ang.). NatureServe. [dostęp 13 marca 2017].
  5. a b c d e Quercus ajoensis (fr.). Plantes & botanique. [dostęp 13 marca 2017].
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Quercus ajoensis: Brief Summary ( Polish )

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Quercus ajoensis Liebm. – gatunek roślin z rodziny bukowatych (Fagaceae Dumort.). Występuje naturalnie w północno-zachodnim Meksyku (w stanie Kalifornia Dolna) oraz południowo-zachodnich Stanach Zjednoczonych (w Arizonie i Kolorado).

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Quercus ajoensis ( Vietnamese )

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Quercus ajoensis là một loài thực vật có hoa trong họ Cử. Loài này được C.H.Mull. miêu tả khoa học đầu tiên năm 1954.[1]

Hình ảnh

Chú thích

  1. ^ The Plant List (2010). Quercus ajoensis. Truy cập ngày 4 tháng 6 năm 2013.

Tham khảo


Bài viết Họ Cử này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn.
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Quercus ajoensis: Brief Summary ( Vietnamese )

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Quercus ajoensis là một loài thực vật có hoa trong họ Cử. Loài này được C.H.Mull. miêu tả khoa học đầu tiên năm 1954.

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