Quercus laurifolia Michx.

Obtusa oak (en)

Species

Angiosperms > Fagales > Fagaceae > Quercus

Characteristics

Trees , tardily deciduous, to 40 m. Bark dark brown to black, ridges flat, furrows deep. Twigs red-brown, (1-)1.5-2.5 mm diam., glabrous. Terminal buds dark red-brown, ovoid to subconic, 2.5-6 mm, distinctly 5-angled in cross section, glabrous or with tuft of reddish hairs at apex. Leaves: petiole 1.5-5 mm, glabrous. Leaf blade rhombic or broadly elliptic to obovate, occasionally oblong or spatulate, 30-120 × 15-45 mm, thin, base attenuate or cuneate, rarely obtuse, margins entire with 1 apical awn, apex obtuse or rounded; surfaces abaxially glabrous, adaxially glabrous, veins raised. Acorns biennial; cup shallowly saucer-shaped to deeply bowl-shaped, 3.5-9 mm high × 11-17 mm wide, covering 1/4-1/2 nut, outer surface puberulent, inner surface pubescent at least 1/2 distance to rim, scale tips appressed, acute or attenuate; nut globose or ovoid, 8.5-16 × 10-16 mm, glabrate, scar diam. 6.5-11.5 mm.
More
Tree to 25 m; twigs glabrous; reddish-tinted; lvs usually yellowish or green when young, only seldom bronzy-red at maturity, coriaceous, glossy beneath, narrowly oblong to lanceolate, elliptic, rhombic, or narrowly obovate, typically 5.5–9 × 1.5–3 cm, rounded-obtuse at the tip, tapering to a narrow, acute base, consistently entire, essentially glabrous except usually for some persistent tomentum in the vein-axils beneath, obscurely reticulate or with the reticulum more prominent on the lower surface than the upper, subpersistent, but turning brown in the fall and deciduous before spring; petiole 2–5 mm; acorns 1.5 cm, the cup depressed-hemispheric. Moist or wet soil, chiefly on the coastal plain; se. Va. to Fla., s. Ark., and e. Tex. (Q. obtusa)
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention deciduous
Sexuality monoecy
Pollination anemogamy
Spread -
Mature width (meter) 2.0
Mature height (meter) 9.0 - 20.0
Root system -
Rooting depth (meter) 0.9
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

Moist sites in sandy floodplains, bottoms and riverbanks, as well as forested wetlands between swamps and pinelands; at elevations up to 150 metres.
Light 3-4
Soil humidity 3-6
Soil texture 3-4
Soil acidity 2-5
Soil nutriment -
Hardiness (USDA) 6-9

Usage

Uses dye environmental use material medicinal wood
Edible seeds
Therapeutic use -
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°) -18
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Habit

Quercus laurifolia habit picture by Collados Ana (cc-by-sa)

Leaf

Quercus laurifolia leaf picture by Maarten Vanhove (cc-by-sa)
Quercus laurifolia leaf picture by Maarten Vanhove (cc-by-sa)
Quercus laurifolia leaf picture by Maarten Vanhove (cc-by-sa)

Distribution

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

Conservation status

Quercus laurifolia threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:296368-1
WFO ID wfo-0000291630
COL ID 4R5CH
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Quercus laurifolia f. dentata Quercus obtusa Quercus rhombica Quercus obtusa Quercus aquatica var. laurifolia Quercus laurifolia var. acuta Quercus laurifolia var. hybrida Quercus laurifolia var. obtusa Quercus laurifolia var. rhombica Quercus laurifolia var. tridentata Quercus obtusa var. obovatifolia Quercus phellos var. laurifolia Quercus rhombica var. obovatifolia Quercus uliginosa var. laurifolia Quercus laurifolia f. obovatifolia Quercus laurifolia