Flora of North America species comparison

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Quercus buckleyi

Buckley's oak, Texas oak, Texas red oak
Habit 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.
Leaves

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.
Terminal

buds grayish brown to reddish brown, ovoid to subfusiform, (2.5-)3-7 mm, scales on apical 1/2 distinctly ciliate.

Quercus buckleyi
Phenology Flowering spring.
Habitat Limestone ridges and slopes, creek bottoms, occasionally along larger streams
Elevation 150-500 m (500-1600 ft)
Distribution
from FNA
OK; TX
[WildflowerSearch map]
[BONAP county map]
Discussion

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).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 3.
Parent taxa Fagaceae > Quercus > sect. Lobatae
Sibling taxa
Q. acerifolia, Q. agrifolia, Q. ajoensis, Q. alba, Q. arizonica, Q. arkansana, Q. austrina, Q. berberidifolia, Q. bicolor, Q. boyntonii, Q. carmenensis, Q. chapmanii, Q. chihuahuensis, Q. chrysolepis, Q. coccinea, Q. cornelius-mulleri, Q. depressipes, Q. douglasii, Q. dumosa, Q. durata, Q. ellipsoidalis, Q. emoryi, Q. engelmannii, Q. falcata, Q. fusiformis, Q. gambelii, Q. garryana, Q. geminata, Q. georgiana, Q. graciliformis, Q. gravesii, Q. grisea, Q. havardii, Q. hemisphaerica, Q. hinckleyi, Q. hypoleucoides, Q. ilicifolia, Q. imbricaria, Q. incana, Q. inopina, Q. intricata, Q. john-tuckeri, Q. kelloggii, Q. laceyi, Q. laevis, Q. laurifolia, Q. lobata, Q. lyrata, Q. macrocarpa, Q. margarettae, Q. marilandica, Q. michauxii, Q. minima, Q. mohriana, Q. montana, Q. muehlenbergii, Q. myrtifolia, Q. nigra, Q. oblongifolia, Q. oglethorpensis, Q. pacifica, Q. pagoda, Q. palmeri, Q. palustris, Q. phellos, Q. polymorpha, Q. prinoides, Q. pumila, Q. pungens, Q. robur, Q. robusta, Q. rubra, Q. rugosa, Q. sadleriana, Q. shumardii, Q. similis, Q. sinuata, Q. stellata, Q. tardifolia, Q. texana, Q. tomentella, Q. toumeyi, Q. turbinella, Q. vacciniifolia, Q. vaseyana, Q. velutina, Q. viminea, Q. virginiana, Q. wislizenii
Name authority Nixon & Dorr: Taxon 34: 225. (1985)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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