Quercus pumila |
Quercus chapmanii |
|
---|---|---|
runner oak, running oak |
Chapman oak, Chapman's oak |
|
Habit | Shrubs, deciduous or tardily deciduous, to 1 m. Bark gray to dark brown. | Shrubs, deciduous or subevergreen, 0.5-3(-6) m, often rhizomatous. |
Bark | brown, scaly. |
|
Twigs | gray-brown to reddish brown, 1-2 mm diam., sparsely to uniformly pubescent. |
yellowish, 1-2 mm diam., densely fine-tomentulose. |
Buds | reddish brown, globose, 1-2(-3) mm, proximal scales densely tomentulose, distal scales glabrous. |
|
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 oblanceolate, 30-70(-85) × 14-30(-45) mm, base cuneate or attenuate, margins minutely revolute, entire or sinuately lobed, sometimes obscurely 3-lobed distally or with 3-5 rounded, irregular lobes in distal 1/2, secondary veins curved, 8-9 on each side, apex ovate or triangular-lobed, often retuse; surfaces abaxially grayish or yellowish, with yellowish, erect branched hairs, these soon shed, leaving matted glandular and waxy hairs except on ± glabrate yellowish veins, adaxially bright glossy, very reflective, glabrous or with minute, scattered, stellate hairs. |
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. |
1-2, on peduncle 1-6(-35) mm; cup hemispheric, 5-11 m deep × 10-15 mm wide, including 1/3-1/2 nut, scales closely appressed, gray, tomentulose; nut light brown, ovoid to barrel-shaped, 15-20 × 9-13 mm, apex rounded, glabrous or puberulent. |
Cotyledons | distinct. |
|
Terminal | buds brown to red-brown, ovoid, 2.5-4.5 mm, glabrous or with ciliate scale margins. |
|
Quercus pumila |
Quercus chapmanii |
|
Phenology | Flowering spring. | Flowering late winter–early spring. |
Habitat | Dry sandy soils of savannahs, low ridges and oak-pine scrub, occasionally at margins of poorly drained sites | Open pine forests, scrublands, xerophytic scrub oak, on sand near coast |
Elevation | 0-100 m (0-300 ft) | 0-100 m (0-300 ft) |
Distribution |
AL; FL; GA; MS; NC; SC
|
FL; GA; SC
|
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.) |
|
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Fagaceae > Quercus > sect. Lobatae | Fagaceae > Quercus > sect. Quercus |
Sibling taxa | ||
Name authority | Walter: Fl. Carol., 234. (1788) | Sargent: Gard. & Forest 8: 93. (1895) |
Web links |