Ginkgo biloba L.

Ginkgo (en), Ginkgo biloba (fr), Ginkgo (fr), Gingko bilobé (fr), Arbre aux quarante écus (fr)

Species

Gymnosperms > Ginkgoales > Ginkgoaceae > Ginkgo

Characteristics

Trees to 40 m tall; trunk to 4 m d.b.h.; bark light gray or grayish brown, longitudinally fissured especially on old trees; crown conical initially, finally broadly ovoid; long branchlets palebrownish yellow initially, finally gray, internodes (1-) 1.5-4 cm; short branchlets blackish gray, with dense, irregularly elliptic leaf scars; winter buds yellowish brown, ovate. Leaves withpetiole (3-)5-8(-10) cm; blade pale green, turning bright yellow in autumn, to 13 × 8(-15) cm on young trees but usually 5-8 cm wide, those on long branchlets divided by a deep, apicalsinus into 2 lobes each further dissected, those on short branchlets with undulate distal and margin notched apex. Pollen cones ivory colored, 1.2-2.2 cm; pollen sacs boat-shaped, withwidely gaping slit. Seeds elliptic, narrowly obovoid, ovoid, or subglobose, 2.5-3.5 × 1.6-2.2 cm; sarcotesta yellow, or orange-yellow glaucous, with rancid odor when ripe; sclerotesta white, with 2 or 3 longitudinal ridges;endotesta pale reddish brown. Pollination Mar-Apr, seed maturity Sep-Oct.
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Trees to 30 m. Crown somewhat ovoid to obovoid, tending to be asymmetric, primary branches ascending at ca. 45° from trunk. Long shoots faintly striate; spurs thick, knoblike or to 3 cm, gray, covered with bud-scale scars. Buds brown, globose, scales imbricate, margins scarious. Leaves fan-shaped, glabrous except for tuft of hairs in axils, blades 2--9.5 × 2--12 cm, mostly 1.5 times wider than long, apices cleft to truncate; venation dichotomous, appearing parallel; leaf scars semicircular; petioles channeled on adaxial surface, 2.5--8.5 cm. Seeds obovoid to ellipsoid, yellow to orange, 2.3--2.7 × 1.9--2.3 cm, mostly 1.1--1.2 times longer than broad, glaucous, rugose, with apical scar, maturing in single season, usually 1 per peduncle, occasionally polyembryonic, outer coat foul-smelling; peduncles orange, glaucous, ridged, 3--9.5 cm, collar broadly elliptic, 7.2--8.6 mm broad. 2 n = 24.
A large tree. It loses its leaves during the year. It grows to 24-35 m high. They are tall and upright when young and become spreading later. It can be 9 m wide. There are many branches. The small branches are of two forms-long and short. The leaves are arranged in spirals on the long branches. The green leaves are 10 cm long. They are fan shaped. They turn golden yellow in autumn. Trees are separately male and female. The reproductive structures are in clusters in the axils of the scale like leaves at the tips of the short branches. The pollen cones hang down. The ovules are on long divided fruiting stalks. Only one seed ripens on each fruiting stalk. The seeds are long and hang down on stalks. The seeds are edible and nutritious. The fruit have an unpleasant smell.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention deciduous
Sexuality dioecy
Pollination anemogamy
Spread -
Mature width (meter) 4.0 - 8.0
Mature height (meter) 30.0
Root system -
Rooting depth (meter) 1.7
Root diameter (meter) 0.9
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway c3

Environment

It is a temperate plant. It resists pollution. It needs shelter from strong winds. It does best in deep, fertile soil. It can tolerate frost. In Melbourne Botanical Gardens. In Hobart Botanical gardens. It suits hardiness zones 3-10. Arboretum Tasmania.
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Found wild in only 2 localities at Guizhou and on the Anhui/Zhejiang border, where it grows on rich sandy soils.
Light 6-9
Soil humidity 3-6
Soil texture 2-5
Soil acidity 3-7
Soil nutriment -
Hardiness (USDA) 5-8

Usage

CAUTION: The seeds are poisonous if eaten raw. They should not be eaten by people on antidepressants or by pregnant women. The seeds are cooked or roasted and are edible and nutritious. They are used in both sweet and savoury dishes. The seeds are soaked in hot water to loosen the skins then roasted. They turn green. They are used in soups, stews, stir-fried dishes, and drinks. The nuts yield an edible oil.
Uses afforestation environmental use food material medicinal oil ornamental poison religious species spice wood
Edible nuts seeds
Therapeutic use Antiviral agents (bark), Anti-bacterial agents (fruit), Antineoplastic agents (fruit), Astringents (fruit), Alzheimer disease (leaf), Anesthesia (leaf), Anti-anxiety agents (leaf), Anti-arrhythmia agents (leaf), Anti-bacterial agents (leaf), Antifungal agents (leaf), Anti-inflammatory agents (leaf), Antioxidants (leaf), Cardiovascular diseases (leaf), Central nervous system diseases (leaf), Cerebrovascular circulation (leaf), Cholinergic agents (leaf), Common cold (leaf), Cosmetics (leaf), Gastrointestinal agents (leaf), Hypersensitivity (leaf), Ischemia (leaf), Kidney diseases (leaf), Liver diseases (leaf), Nervous system diseases (leaf), Parasympatholytics (leaf), Parkinson disease (leaf), Stress, physiological (leaf), Stroke (leaf), Ulcer (leaf), Vasodilator agents (leaf), Wound healing (leaf), Inflammation (plant cells/culture), Kidney diseases (plant cells/culture), Expectorants (seed), Hypnotics and sedatives (seed), Antitussive (unspecified), Asthma (unspecified), Astringent (unspecified), Bactericide (unspecified), Blennorrhea (unspecified), Bronchitis (unspecified), Cancer (unspecified), Corn (unspecified), Cosmetic (unspecified), Cough (unspecified), Digestive (unspecified), Expectorant (unspecified), Flux (unspecified), Gonorrhea (unspecified), Intoxicant (unspecified), Leucorrhea (unspecified), Lung (unspecified), Quackery (unspecified), Sedative (unspecified), Tranquilizer (unspecified), Tuberculosis (unspecified), Uterus (unspecified), Vermifuge (unspecified), Vesicant (unspecified), Wet-Dream (unspecified), Wound (unspecified), Dyspepsia (unspecified), Metrorrhagia (unspecified), Antivinous (unspecified), Detergent (unspecified), Dysuria (unspecified), Vasodilator (unspecified), Bladder (unspecified), Anti-bacterial agents (unspecified), Anticonvulsants (unspecified), Antifungal agents (unspecified), Bronchial spasm (unspecified), Cardiotonic agents (unspecified), Immunosuppressive agents (unspecified), Liver diseases (unspecified), Nootropic agents (unspecified), Parkinson disease (unspecified), Antiapoptotic (unspecified)
Human toxicity allergenic (seed), allergenic (leaf)
Animal toxicity toxic (seed), toxic (leaf)

Cultivation

Plants can be grown from seed or cuttings in autumn. They can also be grown by grafting. Seed have a hard coat and need to be soaked in water before planting. Trees should not be pruned as this causes branches to die back.
Mode cuttings seedlings
Germination duration (days) -
Germination temperacture (C°) 21
Germination luminosity -
Germination treatment stratification
Minimum temperature (C°) -29
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Leaf

Ginkgo biloba leaf picture by Andrew DeCoste (cc-by-sa)
Ginkgo biloba leaf picture by Kathy Neff (cc-by-sa)
Ginkgo biloba leaf picture by Lynn Lynn Day (cc-by-sa)

Fruit

Ginkgo biloba fruit picture by K O (cc-by-sa)
Ginkgo biloba fruit picture by Dieter Albrecht (cc-by-sa)

Distribution

Ginkgo biloba world distribution map, present in Brazil, China, France, Japan, Pakistan, Korea (Democratic People's Republic of), and United States of America

Conservation status

Ginkgo biloba threat status: Endangered

Identifiers

LSID urn:lsid:ipni.org:names:262125-1
WFO ID wfo-0000795526
COL ID 3G3B3
BDTFX ID 30178
INPN ID 100258
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Ginkgo biloba f. pendula Ginkgo biloba f. microsperma Ginkgo biloba f. parvifolia Salisburia adiantifolia Ginkgo macrophylla Pterophyllus salisburiensis Salisburia biloba Salisburia ginkgo Salisburia macrophylla Ginkgo biloba f. fastigiata Ginkgo biloba f. laciniata Ginkgo biloba f. variegata Ginkgo biloba f. aurea Ginkgo biloba var. epiphylla Ginkgo biloba var. fastigiata Salisburia adiantifolia var. pendula Salisburia adiantifolia var. laciniata Salisburia adiantifolia var. variegata Ginkgo biloba var. variegata Ginkgo biloba var. laciniata Ginkgo biloba var. pendula Ginkgo biloba var. aurea Ginkgo biloba