Quercus muehlenbergii Engelm.

Yellow chestnut oak (en)

Species

Angiosperms > Fagales > Fagaceae > Quercus

Characteristics

Trees , deciduous, moderate to large, to 30 m, occasionally large shrubs (ca. 3 m) on drier sites. Bark gray, thin, flaky to papery. Twigs brownish, 1.5-3(-4) mm diam., sparsely fine-pubescent, soon becoming glabrate, graying in 2d year. Buds brown to red-brown, subrotund to broadly ovoid, 20-40 × (10-)15-25 mm, apex rounded, very sparsely pubescent. Leaves: petiole (7-)10-30(-37) mm. Leaf blade usually obovate, sometimes lanceolate to oblanceolate, (32-)50-150(-210) × (10-)40-80(-106) mm, leathery, base truncate to cuneate, margins regularly undulate, toothed or shallow-lobed, teeth or lobes rounded, or acute-acuminate, often strongly antrorse, secondary veins usually (9-)10-14(-16) on each side, ± parallel, apex short-acute to acuminate or apiculate; surfaces abaxially glaucous or light green, appearing glabrate but with scattered or crowded minute, appressed, symmetric, 6-10-rayed stellate hairs, adaxially lustrous dark green, glabrate. Acorns 1-2, subsessile or on axillary peduncle to 8 mm; cup hemispheric or shallowly cupped, 4-12 mm deep × 8-22 mm wide, enclosing 1/4-1/2 nut, base rounded, margin usually thin, scales closely appressed, moderately to prominently tuberculate, uniformly short gray-pubescent; nut light brown, oblong to ovoid, (13-)15-20(-28) × l0-13(-16) mm. Cotyledons distinct. 2 n = 24.
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Tall tree (to 25 m) with rather thin, gray, flaky bark; lvs densely pubescent or tomentose beneath with fine, horizontally spreading, grayish hairs, lanceolate to narrowly oblong, oblanceolate or obovate, 10–20 cm, broadly cuneate to rounded at base, with 9–14 veins on each side, the veins running straight to the teeth and nearly parallel, the teeth commonly sharp, ascending, and often incurved, each ending in a minute, papilliform projection; acorns sessile or nearly so, 1–2 cm, the cup 1–2 cm wide, its very numerous small scales free at the tip; nut ovoid. In good, chiefly calcareous soils; Vt. to se. Minn. and w. Nebr., s. to n. Fla., Ala., and Tex. (Q. prinoides var. acuminata)
A medium sized tree. It grows 15-30 m high. It spreads 12 m wide. It is taller if amongst other trees. The trunk is 60 cm across. The trunk is straight and without branches till the crown. It is strongly tapered with a swollen base. The leaves are 10-18 cm long. They are narrow and taper to both ends. They are coarsely toothed. The upper surface is glossy green and it is greyish green and with downy hairs underneath. There are 10-15 straight veins on each side. The leaf stalk is slender and 1-3 cm long. The fruit are acorns which are 12-25 mm long. they have short stalks. The cup is deep and bowl shaped. It covers about one third of the acorn.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention deciduous
Sexuality monoecy
Pollination anemogamy
Spread -
Mature width (meter) 10.0
Mature height (meter) 18.0 - 20.0
Root system -
Rooting depth (meter) 0.7
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Dry calcareous slopes and ridges, or on rich bottoms. Favouring alkaline soils and avoiding acid soils, it grows on limestone outcrops and well-drained slopes of the uplands, usually scattered with other hardwood speciess.
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It is a temperate plant. It occurs on dry rocky slopes. It is often on limestone soils. It suits hardiness zones 5-9. Arboretum Tasmania.
Light 6-8
Soil humidity 4-6
Soil texture 2-4
Soil acidity 3-8
Soil nutriment -
Hardiness (USDA) 5-7

Usage

The acorns are roasted with butter and salt or dipped in clarified sugar then eaten.
Uses dye material medicinal wood
Edible nuts seeds
Therapeutic use Antiemetic (bark)
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°) -23
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Leaf

Quercus muehlenbergii leaf picture by Ben (cc-by-sa)
Quercus muehlenbergii leaf picture by Danilo Diedrichs (cc-by-sa)
Quercus muehlenbergii leaf picture by Otto (cc-by-sa)

Fruit

Quercus muehlenbergii fruit picture by Mitch Gleason (cc-by-sa)

Distribution

Quercus muehlenbergii world distribution map, present in Åland Islands, Canada, Micronesia (Federated States of), Georgia, Malaysia, Nicaragua, and United States of America

Conservation status

Quercus muehlenbergii threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:30336647-2
WFO ID wfo-0000292088
COL ID 4R5L5
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Quercus castanea Quercus sentenelensis Quercus acuminata Quercus alexanderi Quercus muehlenbergii f. muehlenbergii Quercus acuminata var. alexandri Quercus castanea var. macrophylla Quercus muehlenbergii var. alexandri Quercus muehlenbergii var. brayi Quercus prinoides var. acuminata Quercus prinus var. acuminata Quercus rubra var. muehlenbergii Quercus brayi Quercus muehlenbergii f. alexanderi Quercus prinoides f. alexanderi Quercus muehlenbergii