Quercus lyrata Walter

Overcup oak (en)

Species

Angiosperms > Fagales > Fagaceae > Quercus

Characteristics

Trees , deciduous, to 20 m. Bark light gray, tinged with red, with thick plates underlying scales. Twigs grayish or reddish, (2-)3(-4) mm diam., villous, soon glabrate. Buds 3 mm, gray-puberulent. Leaves: petiole 8-20(-25) mm. Leaf blade obovate or broadly obovate, 100-160(-200) × 50-100(-120) mm, base narrowly cuneate to acute, margins moderately to deeply lobed, lobes somewhat to sharply angular or spatulate, often with 2-3 teeth, sinuses nearly to midrib, secondary veins arched, divergent, (3-)5-7 on each side, apex broadly rounded or ovate; surfaces abaxially light green or somewhat glaucous, tomentose, tomentum persisting or soon falling, adaxially dark green or dull gray, sparsely puberulent to glabrate. Acorns 1-2 on axillary peduncles to 40 mm; cup goblet-shaped, burlike, or spheroid, 15-20 mm deep × 20-30 mm wide, usually completely enclosing nut or merely apex visible, rarely enclosing only 1/2 nut, orifice smaller than nut diameter, often splitting irregularly at maturity, scales closely appressed, especially about margin, laterally connate, broadly triangular, keeled-tuberculate, finely grayish tomentose; nut light brown or grayish, ovoid-ellipsoid or oblong, (15-)25-50 × (10-)20-40 mm, finely puberulent or floccose. Cotyledons distinct.
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Tree to 30 m, with thick, gray bark, the twigs soon glabrescent; lvs narrowly obovate, densely gray-tomentose beneath with horizontally spreading, many-branched stellate hairs, above which project a few erect, few-branched hairs, or with only the latter type of hair; lateral lf-lobes 2–4 pairs, oval, rounded to subacute, rarely emarginate, the lower usually much smaller and separated from the upper by often elongate sinuses; acorns 1.5–2.5 cm, about as thick; cup covering half to all the conic-ovoid nut, the lower scales strongly concave. Wet woods and swamps on the coastal plain; s. N.J. to Fla. and Tex., n. in the interior to s. Ind., s. and w. Ill., and Mo.
A medium sized tree. It grows 18 m tall and spreads 9 m wide. It loses its leaves during the year. It has an open crown and large crooked branches. The leaves are oblong or egg shaped. They have deep, irregular lobes. They are dark green above and paler underneath. The fruit are acorns which are almost stalkless. They are 1.2-2.5 cm long and nearly round. They are almost enclosed by the cup.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention deciduous
Sexuality monoecy
Pollination anemogamy
Spread -
Mature width (meter) 5.5
Mature height (meter) 19.0 - 22.2
Root system -
Rooting depth (meter) 0.6
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Found on poorly drained, alluvial, clayey soils, most commonly on low lying flats in first bottoms and terraces of larger streams, also on edges and shallows of swamps, sloughs, and bayous; in poorly drained depressions or sink holes on ridges
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It is a temperate plant. It grows up to about 150 m altitude in SE regions of the USA. It suits hardiness zones 8-10.
Light 4-7
Soil humidity 4-8
Soil texture 2-4
Soil acidity 2-7
Soil nutriment -
Hardiness (USDA) 5-8

Usage

Uses dye material medicinal wood
Edible nuts seeds
Therapeutic use Ache(Stomach) (unspecified), Dysentery (unspecified), Astringent (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by seedlings.
Mode seedlings
Germination duration (days) 120 - 365
Germination temperacture (C°) 10
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -29
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Quercus lyrata unspecified picture

Distribution

Quercus lyrata world distribution map, present in Åland Islands, Georgia, Nicaragua, and United States of America

Conservation status

Quercus lyrata threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:324855-2
WFO ID wfo-0000291850
COL ID 4R5FD
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Quercus lyrata Scolodrys lyrata Quercus bicolor var. lyrata