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Charming Golden Ginkgo Leaf Brooch, Pin & Pendant
- 2022-12-09 15:35:03
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Charming Golden Ginkgo Leaf Brooch, Pin and Pendant, it's very Fashion for Women and Girl.
Ginkgo biloba, commonly known as ginkgo or gingko (/ˈɡɪŋkoÊŠ, ˈɡɪŋkÉ¡oÊŠ/ GINK-oh, -â goh), also known as the maidenhair tree, is a species of tree native to China. It is the last living species in the order Ginkgoales, which first appeared over 290 million years ago. Fossils very similar to the living species, belonging to the genus Ginkgo, extend back to the Middle Jurassic approximately 170 million years ago. The tree was cultivated early in human history and remains commonly planted.Ginkgo leaf extract is commonly used as a dietary supplement, but there is no scientific evidence that it supports human health or is effective against any disease.EtymologyThe genus name is regarded as a misspelling of the Japanese pronunciation gin kyo for the kanji 銀æ meaning "silver apricot", which is found in Chinese herbology literature such as æ—¥ç”¨æœ¬è‰ (Daily Use Materia Medica) (1329) and Compendium of Materia Medica 本è‰ç¶±ç›® published in 1578.Despite its spelling, which is due to a complicated etymology including a transcription error, "ginkgo" is usually pronounced /ˈɡɪŋkoÊŠ/, which has given rise to the common alternative spelling "gingko". The spelling pronunciation /ˈɡɪŋkÉ¡oÊŠ/ is also documented in some dictionaries.Engelbert Kaempfer first introduced the spelling ginkgo in his book Amoenitatum Exoticarum. It is considered that he may have misspelled "Ginkyo" as "Ginkgo". This misspelling was included by Carl Linnaeus in his book Mantissa plantarum II and has become the name of the tree's genus.Ginkgo biloba in Tournai, BelgiumGinkgos are large trees, normally reaching a height of 20–35 m (66–115 ft), with some specimens in China being over 50 m (165 ft). The tree has an angular crown and long, somewhat erratic branches, and is usually deep-rooted and resistant to wind and snow damage. Young trees are often tall and slender, and sparsely branched; the crown becomes broader as the tree ages. A combination of resistance to disease, insect-resistant wood, and the ability to form aerial roots and sprouts makes ginkgos durable, with some specimens claimed to be more than 2,500 years old.
Ginkgo leaves in summer & autumnThe leaves are unique among seed plants, being fan-shaped with veins radiating out into the leaf blade, sometimes bifurcating (splitting), but never anastomosing to form a network. Two veins enter the leaf blade at the base and fork repeatedly in two; this is known as dichotomous venation. The leaves are usually 5–10 cm (2–4 in), but sometimes up to 15 cm (6 in) long. The old common name, maidenhair tree, derives from the leaves resembling pinnae of the maidenhair fern, Adiantum capillus-veneris. Ginkgos are prized for their autumn foliage, which is a deep saffron yellow.Leaves of long shoots are usually notched or lobed, but only from the outer surface, between the veins. They are borne both on the more rapidly growing branch tips, where they are alternate and spaced out, and also on the short, stubby spur shoots, where they are clustered at the tips. Leaves are green both on the top and bottom[18] and have stomata on both sides. During autumn, the leaves turn a bright yellow and then fall, sometimes within a short space of time (one to 15 days).
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