The Ginkgo (Ginkgo biloba; in Chinese éŠâ¬Ã¦ÂÂ, pinyin romanization, yÃÂn xìng), frequently misspelled as Gingko, and also known as the Maidenhair Tree after Adiantum, is a unique tree with no close living relatives. The 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. The extract of the Ginkgo leaves contains flavonoid glycosides and terpenoids (ginkgolides, bilobalides) and has been used pharmaceutically. It has many alleged nootropic properties, and is mainly used as memory and concentration enhancer, and anti-vertigo agent.
圖片編號:
10419844
拍攝者:
Urospetrovic
點數下載
授權類型 | 尺寸 | 像素 | 格式 | 點數 | |
---|---|---|---|---|---|
標準授權 | XS | 480 x 384 | JPG | 13 | |
標準授權 | S | 800 x 639 | JPG | 15 | |
標準授權 | M | 1937 x 1548 | JPG | 18 | |
標準授權 | L | 2501 x 1999 | JPG | 20 | |
標準授權 | XL | 3163 x 2528 | JPG | 22 | |
標準授權 | MAX | 4144 x 3312 | JPG | 23 | |
標準授權 | TIFF | 5861 x 4684 | TIF | 39 | |
進階授權 | WEL | 4144 x 3312 | JPG | 88 | |
進階授權 | PEL | 4144 x 3312 | JPG | 88 | |
進階授權 | UEL | 4144 x 3312 | JPG | 88 |
XS
S
M
L
XL
MAX
TIFF
WEL
PEL
UEL
標準授權 | 480 x 384 px | JPG | 13 點 |
標準授權 | 800 x 639 px | JPG | 15 點 |
標準授權 | 1937 x 1548 px | JPG | 18 點 |
標準授權 | 2501 x 1999 px | JPG | 20 點 |
標準授權 | 3163 x 2528 px | JPG | 22 點 |
標準授權 | 4144 x 3312 px | JPG | 23 點 |
標準授權 | 5861 x 4684 px | TIF | 39 點 |
進階授權 | 4144 x 3312 px | JPG | 88 點 |
進階授權 | 4144 x 3312 px | JPG | 88 點 |
進階授權 | 4144 x 3312 px | JPG | 88 點 |