Magnolia grandiflora L.

Bull-bay (en), Magnolia à grandes fleurs (fr)

Species

Angiosperms > Magnoliales > Magnoliaceae > Magnolia

Characteristics

Trees , evergreen, single-trunked, to 37 m. Bark gray, rough, thick, furrowed in thick plates. Pith diaphragmed. Twigs and foliar buds densely red-or white-hairy. Leaves distinctly alternate, not in terminal whorl-like clusters; stipules 2, free, 4.5-13 × 1.5-3.5 cm, abaxially densely brown-silky, sometimes deeply notched. Leaf blade narrowly to broadly elliptic or oblanceolate, (7.5-)13-20(-26) × (4.5-)6-10(-12.5) cm, thick-leathery, base narrowly cuneate, apex abruptly tapered and acute to short-acuminate, rarely obtuse; surfaces abaxially glabrous to densely red-brown felted, adaxially bright green, lustrous, glabrous. Flowers strongly lemony fragrant, 15-30(-45) cm across; spathaceous bracts 2, leathery, outer bract abaxially brown to grayish pilose, deeply notched, smaller, inner bract adaxially densely brown to grayish pilose, shallowly notched, larger; tepals creamy white; stamens (179-)213-383(-405), 16-29 mm; filaments purple; pistils (45-)55-81(-89). Follicetums cylindric to somewhat obovoid, 7-10 × 3.5-5 cm; follicles beaked, sparsely to densely silky-villous. Seeds lenticular to narrowly ellipsoid, (9-)12-14 mm, adaxially slightly grooved, aril red. 2 n =114.
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Trees, to 30 m tall but usually shorter when cultivated. Bark pale brown to gray, thinly scaly fissured. Twigs, vegetative buds, petioles, and leaf blade abaxial surfaces densely brown to grayish brown shortly tomentose but abaxial surface of young leaf blades glabrous. Twigs thick and strong. Petiole 1.5-4 cm, deeply furrowed, without a stipular scar; leaf blade elliptic, oblong-elliptic, or obovate-oblong, 10-20 × 4-7(-10) cm, thickly leathery, adaxially deep green and glossy, secondary veins 8-10 on each side of midvein, base cuneate, apex obtuse to shortly mucronate. Flowers 15-20 cm in diam., fragrant. Tepals 9-12, white, obovate, 6-10 × 5-7 cm, thickly fleshy. Stamens ca. 2 cm; filaments purple, flat; connective exserted and forming a mucro; anthers introrse. Gynoecium ellipsoid, densely long tomentose; carpels ovoid, 1-1.5 cm; styles reclinate. Fruit terete to ovoid, 7-10 × 4-5 cm, densely brown to pale grayish yellow tomentose; mature carpels abaxially rounded, dehiscing along dorsal sutures, apex long beaked. Seeds ovoid, ca. 1.4 × 0.6 cm; testa red. Fl. May-Jun, fr. Sep-Oct. 2n = 114.
Handsome tree to 30 m; winter terminal bud 1–2.5 cm, evidently hairy; lvs scattered or somewhat clustered toward the ends of the twigs, leathery, evergreen, elliptic, 12–25 cm, a third or half as wide, acute to obtuse, basally acute to rounded-obtuse, the lower surface conspicuously rusty with a ± persistent, thin, villous tomentum; fls fragrant, creamy-white, cup-shaped, ca 10 cm thick; pet 6–12, obovate or spatulate, broadly rounded distally, concave, 7–13 cm; fr cone ellipsoid, 6–10 cm, the follicles woolly-villous; 2n=ca 114. Rich woods and moist bottomlands; coastal plain from se. Va. to Fla. and Tex. Apr.–June.
An evergreen tree. It is a broad cone shape. It grows 25 m high. The trunk is 60-90 cm across. The bark is dark grey and smooth. It becomes furrowed and scaly. The leaves are deep glossy green. They are 13-20 cm long by 5-7.5 cm wide. They are stiff and leathery. They are often a rusty furry colour underneath. The flowers are large and creamy white. They are 15-20 cm wide. They are saucer shaped. They have a scent. The fruit are woody and have bright red seeds. Many cultivated varieties exist.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) 1.0
Mature height (meter) 10.4 - 25.0
Root system -
Rooting depth (meter) 1.1
Root diameter (meter) 0.8
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway c3

Environment

It suits warm temperate and subtropical regions. It grows naturally on river banks and moist coastal soils in SE USA. It does best in part shade. It can tolerate city pollution. It will grow up to 2,000 m in the Himalayas. It suits hardiness zones 6-9. Melbourne Botanical Gardens. Hobart Botanical Gardens. Arboretum Tasmania.
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Hammocks, sand dunes, buffs and sandy bottoms. Rich moist soils. Always found in lowland areas, never above 105 metres altitude
Light 3-7
Soil humidity 4-8
Soil texture 2-5
Soil acidity 2-6
Soil nutriment -
Hardiness (USDA) 7-9

Usage

The flowers are pickled. They are also used as a spice and a condiment. They can be used to make a drink.
Uses afforestation environmental use essential oil material medicinal ornamental poison spice wood
Edible flowers
Therapeutic use Dermatological Aid (bark), Kidney Aid (bark), Anti-inflammatory agents (bark), Antirheumatic agents (bark), Malaria (bark), General tonic for rejuvenation (bark), Diaphoretic (bark), Anti-bacterial agents (bark), Antiemetics (bark), Appetite stimulants (bark), Central nervous system depressants (bark), Diuretics (bark), Antirheumatic agents (flower), Anti-bacterial agents (leaf), Antifungal agents (leaf), Dermatological Aid (unspecified), Anodyne (unspecified), Dropsy (unspecified), Fish-Bones (unspecified), Stomachic (unspecified), Deobstruent (unspecified), Diuretic (unspecified), Fever (unspecified), Sudamina (unspecified), Alcoholism (unspecified), Tonic (unspecified), Diaphoretic (unspecified), Hypotensive (unspecified), Stimulant (unspecified), Abdominal pain (unspecified), Common cold (unspecified), Headache (unspecified), Stomach diseases (unspecified), Antioxidants (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Plants are grown from seed. They can also be grown from cuttings or by air-layering or grafting.
Mode cuttings seedlings
Germination duration (days) 120
Germination temperacture (C°) 10
Germination luminosity -
Germination treatment stratification
Minimum temperature (C°) -18
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Habit

Magnolia grandiflora habit picture by Chris Griggs (cc-by-sa)
Magnolia grandiflora habit picture by Eli Small (cc-by-sa)
Magnolia grandiflora habit picture by Eli Small (cc-by-sa)

Leaf

Magnolia grandiflora leaf picture by Yves Demouy (cc-by-sa)
Magnolia grandiflora leaf picture by Burns Francis (cc-by-sa)
Magnolia grandiflora leaf picture by Tim Tim (cc-by-sa)

Flower

Magnolia grandiflora flower picture by Lacy Flanagan (cc-by-sa)
Magnolia grandiflora flower picture by Mike L (cc-by-sa)
Magnolia grandiflora flower picture by Mike L (cc-by-sa)

Fruit

Magnolia grandiflora fruit picture by Faye (cc-by-sa)
Magnolia grandiflora fruit picture by Will Clark (cc-by-sa)
Magnolia grandiflora fruit picture by RIVER STONE (cc-by-sa)

Distribution

Magnolia grandiflora world distribution map, present in Åland Islands, Brazil, China, Cuba, Dominica, Georgia, Nicaragua, Pakistan, Puerto Rico, and United States of America

Conservation status

Magnolia grandiflora threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:554723-1
WFO ID wfo-0000233174
COL ID 3XHB5
BDTFX ID 40664
INPN ID 107141
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Magnolia foetida f. margarettae Magnolia angustifolia Magnolia foetida Magnolia gloriosa Magnolia longifolia Magnolia microphylla Magnolia obovata Magnolia elliptica Magnolia exoniensis Magnolia galissoniensis Magnolia glabra Magnolia lacunosa Magnolia lanceolata Magnolia praecox Magnolia pravertiana Magnolia tardiflora Magnolia tomentosa Magnolia ferruginea Magnolia ferruginea Magnolia grandiflora var. elliptica Magnolia grandiflora var. exoniensis Magnolia grandiflora var. lanceolata Magnolia virginiana var. foetida Magnolia virginiana var. grisea Magnolia grandiflora var. obovata Magnolia grandiflora var. ferruginea Magnolia grandiflora var. rotundifolia Magnolia grandiflora var. angustifolia Magnolia grandiflora var. praecox Magnolia umbrella var. maxima Magnolia foetida f. parvifolia Magnolia grandiflora f. galissoniensis Magnolia hartwegii Magnolia hartwicus Magnolia grandiflora f. lanceolata Magnolia maxima Magnolia rotundifolia Magnolia stricta Magnolia grandiflora