Oxydendrum arboreum (L.) Dc.

Sourwood (en)

Species

Angiosperms > Ericales > Ericaceae > Oxydendrum

Characteristics

A deciduous tree. It grows 5-20 m tall. The tree is broadly cone shaped. The bark is thick and grey-brown. It is deeply furrowed. They leaves are oblong and 20 cm long by 7.5 cm wide. They taper to a fine point. They have very fine teeth. They are glossy dark green and smooth above and slightly hairy underneath. They turn red-yellow or purple in autumn. The leaves are long and sour tasting. The flowers are small and white. They are urn shaped and have a scent. They occur in large upright clusters. They are at the ends of the shoots. The fruit is a woody brown capsule.
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Plants to ca. 25(-35) m, with sour-tasting sap. Stems terete. Leaf blades turning red in autumn, 5.5-23.5 × 2-8 cm, base cuneate to rounded, apex acute to acuminate. Flowers: calyx lobes 1-2 × 0.7-1.4 mm; corolla 4-7 × 2.5-5.5 mm; filaments 2-3.5 mm; anthers with locules narrowed distally, tubulelike; style strongly impressed into apex of ovary. Capsules 3.5-8.5 × 2-4 mm, unicellular-hairy; placentae basal. 2n = 24.
Tree to 20 m, beginning to fl at 2–3 m; lvs oblong, elliptic, or lance-ovate, 10–15 cm, acuminate, entire or serrulate; petioles 1–1.5 cm; racemes 4–7 at end of each branch, widely spreading, 5–15 cm, persistent; pedicels 3–8 mm, minutely bracteolate near the middle; cor 6–7 mm; fr 5–7 mm; 2n=24. Woods, Pa. to s. Ind., s. to Fla. and La. June, July.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) 4.0 - 6.0
Mature height (meter) 10.0 - 10.7
Root system -
Rooting depth (meter) 0.8
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

It is a temperate plant. It is native to eastern North America. It grows in woods and by streams. It needs humus rich, acid soil. It suits hardiness zones 5-9. Arboretum Tasmania.
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Usually found as an understorey tree in well-drained gravelly soils on ridges rising above the banks of streams.
Light 3-7
Soil humidity 2-6
Soil texture 3-5
Soil acidity 1-5
Soil nutriment -
Hardiness (USDA) 6-8

Usage

The young tender leaves are eaten. They are sour. The plant is the source of a sweet honey.
Uses environmental use fiber fuel invertebrate food material medicinal wood
Edible leaves
Therapeutic use Dermatological Aid (bark), Oral Aid (bark), Gynecological Aid (unspecified), Antidiarrheal (unspecified), Gastrointestinal Aid (unspecified), Pulmonary Aid (unspecified), Respiratory Aid (unspecified), Sedative (unspecified), Fever (unspecified), Heart (unspecified), Thirst (unspecified), Urogenital (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

It can be grown from seed or softwood cuttings.
Mode cuttings seedlings
Germination duration (days) -
Germination temperacture (C°) 21
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -23
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Habit

Oxydendrum arboreum habit picture by Eli Small (cc-by-sa)
Oxydendrum arboreum habit picture by Eli Small (cc-by-sa)

Leaf

Oxydendrum arboreum leaf picture by Mary Beth Manning (cc-by-sa)
Oxydendrum arboreum leaf picture by Mary Beth Manning (cc-by-sa)
Oxydendrum arboreum leaf picture by Kat L. (cc-by-sa)

Flower

Oxydendrum arboreum flower picture by Ginny (cc-by-sa)
Oxydendrum arboreum flower picture by Krelco krelco (cc-by-sa)
Oxydendrum arboreum flower picture by James Rush (cc-by-sa)

Fruit

Oxydendrum arboreum fruit picture by Kat L. (cc-by-sa)
Oxydendrum arboreum fruit picture by Kat L. (cc-by-sa)

Distribution

Oxydendrum arboreum world distribution map, present in United States of America

Conservation status

Oxydendrum arboreum threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:1175876-2
WFO ID wfo-0001047056
COL ID 75FSZ
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Oxydendrum arboreum