Quercus pumila

Walter

Fl. Carol., 234. 1788.

Common names: Runner oak
EndemicIllustrated
Treatment appears in FNA Volume 3.

Shrubs, deciduous or tardily deciduous, to 1 m. Bark gray to dark-brown. Twigs gray-brown to reddish-brown, 1-2 mm diam., sparsely to uniformly pubescent. Terminal buds brown to redbrown, ovoid, 2.5-4.5 mm, glabrous or with ciliate scale margins. Leaves: petiole 1.5-4.5 mm, pubescent. Leaf-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. 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.


Phenology: Flowering spring.
Habitat: Dry sandy soils of savannahs, low ridges and oak-pine scrub, occasionally at margins of poorly drained sites
Elevation: 0-100 m

Distribution

V3 271-distribution-map.gif

Ala., Fla., Ga., Miss., N.C., S.C.

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.

Selected References

None.

Lower Taxa

None.
... more about "Quercus pumila"
obtuse +  and rounded +
Kevin C. Nixon +
Walter +
furrowed +  and smooth +
gray;dark-brown +
acute;rounded +
2-6-lobed +
pistillate +, capitate +  and spicate +
Runner oak +
connate +  and distinct +
starchy +  and fleshy +
tuberculate +
deeply saucer-shaped +  and turbinate +
×10-15 +, 5mm +  and 12mm +
multibracteate +, spiny +  and scaly +
Ala. +, Fla. +, Ga. +, Miss. +, N.C. +  and S.C. +
0-100 m +
pistillate +  and staminate +
biennial +, annual +  and maturation +
1-seeded +  and winged +
in groups +  and enclosed +
Dry sandy soils of savannahs, low ridges and oak-pine scrub, occasionally at margins of poorly drained sites +
pistillate +, spicate +  and staminate +
silky-tomentose +
2.5 cm25 mm <br />0.025 m <br /> (10 cm100 mm <br />0.1 m <br />) +
oblong +  and narrowly obovate +
arranged +  and alternate +
toothed +  and entire +
0.95 cm9.5 mm <br />0.0095 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
1/3 +  and 1/2-2/3 +
globose +  and ovoid or broadly oblong +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Flowering spring. +
Fl. Carol., +
distinct +
few-to-many +
tuberculate +
reduced +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
anastomosing +, branching +  and unbranched +
W1 +, Endemic +  and Illustrated +
inconspicuous +
distinct +
linear-spatulate +
with scattered hairs +, glabrous +, glabrate +  and pubescent +
Quercus pumila +
Quercus sect. Lobatae +
species +
brown +  and redbrown +
with ciliate scale margins +  and glabrous +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
bristle-tipped +
gray-brown +  and reddish-brown +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +