Quercus pumila |
Quercus similis |
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runner oak, running oak |
bottomland post oak, delta post oak, swamp post oak |
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Habit | Shrubs, deciduous or tardily deciduous, to 1 m. Bark gray to dark brown. | Trees, deciduous, to 25 m, with single straight trunk. |
Bark | brown, scaly. |
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Twigs | gray-brown to reddish brown, 1-2 mm diam., sparsely to uniformly pubescent. |
grayish, 2-3 mm diam., persistently tomentulose. |
Buds | brown, ovoid, 2-3 mm, apex acute or rounded, proximally pubescent. |
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Leaves | blade oblong to narrowly obovate, 25-100 × 10-33 mm, base acute to rounded, margins entire, revolute, with 1 apical awn, apex acute or obtuse to rounded; surfaces abaxially uniformly gray-brown pubescent, rarely glabrate, adaxially somewhat convex, rugose, glabrous or with scattered hairs along midrib. |
blade obovate or narrowly obovate, (50-)75-120(-150) × 50-65(-80) mm, base rounded-attenuate or acute, margins flat, shallowly 2-3-lobed on each side, lobes usually simple, oblong or rounded, rarely spatulate, not cruciform, secondary veins 3-5 on each side, apex broadly ovate or acute; surfaces abaxially grayish, sparsely glandular and sparsely appressed-stellate, adaxially dark green, glossy, sparsely stellate. |
Acorns | annual; cup deeply saucer-shaped to turbinate, 5-12 mm high × 10-15 mm wide, covering 1/3-1/2(-2/3) nut, outer surface pubescent, inner surface densely pubescent, scales rarely involute, often tuberculate, tips tightly appressed, acute; nut globose to ovoid or broadly oblong, 9.5-15 × 9-12 mm, glabrate, scar diam. 5-8 mm. |
1-3, subsessile; cup 6-7 mm deep × 10-13 mm wide, scales closely appressed, grayish, finely tomentulose; nut light brown or dark reddish brown, ovoid or oblong, 12-16 × 8-12 mm, puberulent or glabrate. |
Cotyledons | distinct. |
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Terminal | buds brown to red-brown, ovoid, 2.5-4.5 mm, glabrous or with ciliate scale margins. |
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Quercus pumila |
Quercus similis |
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Phenology | Flowering spring. | Flowering spring. |
Habitat | Dry sandy soils of savannahs, low ridges and oak-pine scrub, occasionally at margins of poorly drained sites | Forests in wet stream bottoms, flatwoods, river valleys |
Elevation | 0-100 m (0-300 ft) | 0-300 m (0-1000 ft) |
Distribution |
AL; FL; GA; MS; NC; SC
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AL; AR; GA; LA; MS; SC; TX
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Discussion | Although no hybrid combinations have been formally proposed, D. M. Hunt (1989) has reported evidence of hybridization with Quercus hemisphaerica, Q. incana, Q. myrtifolia, and Q. phellos. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Fagaceae > Quercus > sect. Lobatae | Fagaceae > Quercus > sect. Quercus |
Sibling taxa | ||
Synonyms | Q. ashei, Q. stellata var. paludosa | |
Name authority | Walter: Fl. Carol., 234. (1788) | Ashe: J. Elisha Mitchell Sci. Soc. 40: 43. (1924) |
Web links |