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Field

Oaks of the World

The Sibley Guide to Trees

Common Names

Nuttall's oak, Texas red oak

Texas Red Oak, Nuttall Oak, Red River Oak, Smoothbark Red Oak

Geographic Range

Alabama ; Missouri ; Texas ; Illinois ; Central South USA ; 0 to 200 m;

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Growth Habit

18-30 m tall;

Deciduous. Medium to large tree to 75’ tall.

Leaves

10-20 x 5-12 cm; apex pointed; base cuneate; margin with 5-9 narrow lobes and deep, broadly rounded sinuses; smooth, hairless, dark green above; paler beneath with tufts of hairs at axil of veins; petiole hairless, 2-5 cm long;

6”
thin
sharply lobed
dark above
underleaf with conspicious hair tufts at vein junction

Fruits (Acorns)

acorn 1.5-2.5 cm, red brown, striated; rather deep cup, with thick peduncle-shaped base, enclosing 1/4 to 1/2 of nut; maturing in 2 years;

1”
cup deep goblet shaped
covers 1/2 - 1/2 of nut
scales tight

Twigs

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reddish-brown to gray

Buds

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reddish brown to gray

Hardiness & Habitat

hardy; prefers moist soils; fast-growing;

Common in floodplains and bottomlands.
Uncommon by increasing cultivation, particualr in warmer zones
Zones 5-9

Additional Information

– Sub-genus Quercus, section Lobatae, Series Palustres; – The name Q.texana has been erroneously used for Q.buckleyi , and by some Authors for Q.gravesii , so it may be better to name this taxon Q.nuttallii in order to avoid confusions…? – Thomas Nuttall ( 1786-1859 ) = English American botanist and ornithologist ; – Described as a true species, different from Q.palustris , in 1927 only;

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