Quercus buckleyi Nixon & Dorr  

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Threats:

Major Threats

Since the 1930s, low recruitment in stands of Quercus buckleyi has been reported, likely due to browsing from increasing white-tailed deer populations. While the population is not currently in decline, this may impact future population viability as mature trees age and die.

Reports also suggest that oak wilt (caused by the fungusCeratocystis fagacearum) is impacting Q. buckleyi stands in central Texas, resulting in degradation of critical habitat for the endangered Golden-cheeked Warbler.

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Rights holder/AuthorInternational Union for Conservation of Nature and Natural Resources
Sourcehttp://www.iucnredlist.org/apps/redlist/details/34030

Conservation Actions:

Conservation Actions

Though some threats to Buckley Oak have been noted, the local abundance and currently stable population suggest that this species is not currently a priority for conservation efforts. However, monitoring of these threats would be beneficial and allow for early response if the population starts to decline across the range. According to BGCI, this species is maintained in 23 ex situ collections worldwide (BGCI 2015).
Licensehttp://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/AuthorInternational Union for Conservation of Nature and Natural Resources
Sourcehttp://www.iucnredlist.org/apps/redlist/details/34030

Quercus buckleyi:

Quercus buckleyi, commonly known as Texas red oak or Buckley's oak, is a species of flowering plant in the Fagaceae family.[2][3] It is endemic to the southern Great Plains of the United States. It is smaller and more likely to be multi-trunked than its close relative, the Shumard oak. The two species are interfertile, and hybrids are common along a line from Dallas to San Antonio. Texas red oak usually is 30 to 50 feet (9 to 15 meters) tall at maturity, and seldom reaches a height of more than 75 feet (23 meters). Its previous scientific name was Quercus texana which is now the scientific name for Nuttall's oak and thus has led to much confusion when referencing this oak.[4]

It is a highly regarded ornamental and shade tree. In autumn the leaves turn vivid red and orange.

References[edit]

  1. ^ Nixon, K. et al. 1998. Quercus buckleyi. 2006 IUCN Red List of Threatened Species. Downloaded on 23 August 2007.
  2. ^ Preston, Richard J.; Braham, Richard R. Quercus buckleyi. In: North American trees. Iowa State Press.
  3. ^ USDA Natural Resources Conservation Service. Plant Profile: Quercus buckleyi
  4. ^ Flora of North America: Quercus buckleyi
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Rights holder/AuthorWikipedia
Sourcehttp://en.wikipedia.org/w/index.php?title=Quercus_buckleyi&oldid=640073676

Range Description:

Endemic to the Edwards Plateau of the south-central United States, Buckley Oak (Quercus buckleyi) grows only incentral Texas and Oklahoma, with an unconfirmed report from Kansas. Despite its somewhat restricted occurrence, Q. buckleyiis locally abundant within this area, in the upland forests and woodlands of central Texas and southern Oklahoma. Herbarium records document this species from at least 35 counties in Texas and13 counties in Oklahoma, reflecting that it occurs commonly throughout these states. Its estimated extent of occurrence (EOO) is roughly 240,800 km2.

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Rights holder/AuthorInternational Union for Conservation of Nature and Natural Resources
Sourcehttp://www.iucnredlist.org/apps/redlist/details/34030

Comments:

For many years the names Quercus texana , Q . rubra var. texana , and Q . shumardii var. texana were erroneously used for Q . buckleyi (L. J. Dorr and K. C. Nixon 1985). 

 Quercus texana reportedly hybridizes with Q . marilandica (= Q . × hastingsii Sargent). Quercus × hastingsii may be derived from Q . marilandica var. ashei (D. M. Hunt 1989). Hybridization with Q . shumardii may also occur (L. J. Dorr and K. C. Nixon 1985).

Licensehttp://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/AuthoreFloras.org Copyright © Missouri Botanical Garden
Sourcehttp://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=233501014

National Distribution:
United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

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Sourcehttp://explorer.natureserve.org/servlet/NatureServe?searchName=Quercus+buckleyi

Global Range: South-central Texas north to southern Oklahoma and Kansas.

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Sourcehttp://explorer.natureserve.org/servlet/NatureServe?searchName=Quercus+buckleyi

Distribution:

Okla., Tex.

Licensehttp://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/AuthoreFloras.org Copyright © Missouri Botanical Garden
Sourcehttp://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=233501014

Description:

Trees , deciduous, to 15 m. Bark gray and smooth or black and furrowed. Twigs grayish brown to red-brown, rarely somewhat yellowish or gray, 1.5-3 mm diam., glabrous. Terminal buds grayish brown to reddish brown, ovoid to subfusiform, (2.5-)3-7 mm, scales on apical 1/2 distinctly ciliate. Leaves: petiole 20-45 mm, glabrous. Leaf blade circular or broadly elliptic to obovate, 55-100 × 51-112 mm, base cuneate to truncate, often inequilateral, margins with 7-9 lobes and 12-35 awns, lobes oblong to distally expanded, apex acute to acuminate; surfaces abaxially light green or coppery green, glabrous or with small, axillary tufts of tomentum, adaxially shiny or glossy, glabrous, veins raised on both surfaces. Acorns biennial; cup goblet- to cup-shaped, rarely saucer-shaped, 5-11.5 mm high × 10-18 mm wide, covering 1/3-1/2 nut, outer surface glabrous to sparsely puberulent, inner surface glabrous except for a few hairs around scar, scales acute, less than 4 mm, occasionally tuberculate, especially at base of cup, tips appressed; nut broadly ovoid to broadly ellipsoid, rarely oblong, 12-18.5 × 8-14 mm, occasionally with faint rings of pits at apex, glabrous or sparsely puberulent, scar diam. 3.5-8 mm.

Licensehttp://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/AuthoreFloras.org Copyright © Missouri Botanical Garden
Sourcehttp://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=233501014

Habitat and Ecology:

Habitat and Ecology

A small to medium deciduous tree, Buckley Oak typically grows to 15 m when mature, often with multiple stems. This species is typical of limestone ridges, slopes and creek bottoms in the uplands of central Texas into Oklahoma. Quercus buckleyi is considered a co-dominant species of these mixed woodland communities throughout the Edwards Plateau. Ashe Juniper (Juniperus ashei), and Plateau Live Oak (Q. fusiformis) are important co-dominants, along with hackberry, hickory, redbud and other oak species.

These mixed woodlands form important breeding habitat for the Golden-cheeked Warbler (Setophaga chrysoparia) and Black-capped Vireo (Vireo atricapilla). The Golden-cheeked Warbler feeds on Lepidopteran larvae which rely on foliage of broad-leafeddeciduoustrees, importantly those of Q. buckleyi.

Systems

  • Terrestrial
Licensehttp://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/AuthorInternational Union for Conservation of Nature and Natural Resources
Sourcehttp://www.iucnredlist.org/apps/redlist/details/34030
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith