ginkgo

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ginkgo

(gĭng`kō) or

maidenhair tree,

tall, slender, picturesque deciduous tree (Ginkgo biloba) with fan-shaped leaves. The ginkgo is native to E China, where it was revered by Buddhist monks and planted near temples; it is unclear if any truly wild stands still exist. A "living fossil," the ginkgo is the only remaining species of a large order (Ginkgoales) of gymnosperms that existed in the Triassic period. Its form has not changed in millions of years, as is shown by fossils widely scattered over Europe, North and South America, and Asia. The ginkgo is valued today as a street tree, being exceptionally tolerant of smoke, low temperatures, and minimal water supply. Slow growing, the ginkgo is also long-lived. The male and female strobile (see conecone
or strobilus
, in botany, reproductive organ of the gymnosperms (the conifers, cycads, and ginkgoes). Like the flower in the angiosperms (flowering plants), the cone is actually a highly modified branch; unlike the flower, it does not have sepals or petals.
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) are borne on separate trees. The "fruit," botanically a seed, is surrounded by a malodorous pulp, making the male trees more desirable as ornamentals; however, the seed kernel is highly esteemed in East Asia as a food. The herbal remedy ginkgo biloba, an extract of ginkgo leaves, is said to enhance concentration and short-term memory, but the claim has not been verified in controlled studies. The ginkgo is classified in the division PinophytaPinophyta
, division of the plant kingdom consisting of those organisms commonly called gymnosperms. The gymnosperms, a group that includes the pine, have stems, roots and leaves, and vascular, or conducting, tissue (xylem and phloem).
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, class Ginkgoopsida, order Ginkgoales, family Ginkgoaceae.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Ginkgo

 

a deciduous gymnospermous tree of the order Ginkgo. The only modern representative is the Ginkgobiloba. Height, 30-40 m; trunk diameter, 1 m. The tree has a branchy crown and is dioecious. Its leaf has a petiole and is fan-shaped. The seeds are ellipsoid, 2-3 cm long, with fleshy outer shells. The ginkgo is found in a few regions of East Asia. In Europe ginkgos have been grown as decorative trees since 1754. In the USSR, they winter well on the Black Sea coasts of the Caucasus and Ukraine.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

ginkgo

[′giŋ·kō]
(botany)
A dioecious tree, commonly known as the maidenhair tree (Ginkgo biloba), that is native to China and is cultivated as a shade tree, it is the only surviving species of the class Ginkgoatae and is considered a living fossil. Also known as gingko tree.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Experiments on rats show that cat's claw in combination with ginko biloba, gotu kola, or rosemary suppresses the development of the sticky plaque in the brain that is responsible for Alzheimer's disease.
James Posner, Tucson, Arizona, reports successful results after his doctor ordered an alternative regimen of cinnamon, garlic, ginko biloba, and baby aspirin to keep blood flowing, adding that, without a doubt, peripheral arterial disease requires close medical supervision.
The Thivillons already had some experience of raising a gorilla, having spent time living with Digit's brother, Ginko, who they eventually had to send back to the zoo after he became aggressive.
Name day: Georgi, Georgia, Gergin, Gergina, Gergana, Ginko, Ginka, Ganka, Gosho, Zhoro
CHB was established in 1905 in Chang Hwa County, Taiwan under the name of Kabushiki Kaisha Shoka Ginko. The Bank relocated its headquarters to Taichung City in 1910 and adopted the present name in 1947.
Having established a position of leadership in the eyeglasses market in both Taiwan and China, the Ginko International Co.
Forms such as the leaf of a ginko, a crescent moon, one with a star-shaped lid, or one that has a lobed rim, all are assured and eminently collectible by tea ceremony adherents who prize them equally for their beauty and function.
I leave Auteuil and grab the TGV train from Montparnasse to La Rochelle, a lovely old Atlantic harbour town where tomorrow I am due to partner my old friend Ginko Biloba.
John Phillip Law plays the masked thief who steals and torments the Italian government, represented by policeman Ginko (Michel Piccoli).
Among them are several that are thought to have benefits that specifically relate to the concerns of older consumers including soy lecithin which fights dementia and cognitive decline; omega-3 and ginko biloba for improved memory; and ginseng, which helps fight memory loss and boosts energy.