Platanus is a small genus of trees native to the Northern Hemisphere. They are the sole living members of the family Platanaceae. The hybrid London Plane has proved particularly tolerant of urban conditions. They are known as planes or plane trees. The flowers are reduced and are borne in balls (globose head); 3ââ¬â7 hairy sepals may be fused at base, and the petals are 3ââ¬â7 (or no) and spathulate. Male and female flowers are separate, but on the same plant (monoecious). The number of heads in one cluster (inflorescence) is indicative of the species (see table below). The male flower has with 3ââ¬â8 stamens; the female has a superior ovary with 3ââ¬â7 carpels. Plane trees are wind-pollinated. Male flower-heads fall off the branch after shedding their pollen. They are known as planes or plane trees. Some are sometimes called sycamores (especially the North American Platanus occidentalis), although that term also refers to either the fig Ficus sycomorus, the plant originally so named, or the Great, or Sycamore Maple, Acer pseudoplatanus.
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授權類型 | 尺寸 | 像素 | 格式 | 點數 | |
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標準授權 | XS | 480 x 457 | JPG | 13 | |
標準授權 | S | 800 x 762 | JPG | 15 | |
標準授權 | M | 1774 x 1690 | JPG | 18 | |
標準授權 | L | 2291 x 2182 | JPG | 20 | |
標準授權 | XL | 3030 x 2886 | JPG | 22 | |
標準授權 | MAX | 3549 x 3380 | JPG | 23 | |
標準授權 | TIFF | 4285 x 4081 | TIF | 39 | |
進階授權 | WEL | 3549 x 3380 | JPG | 88 | |
進階授權 | PEL | 3549 x 3380 | JPG | 88 | |
進階授權 | UEL | 3549 x 3380 | JPG | 88 |
XS
S
M
L
XL
MAX
TIFF
WEL
PEL
UEL
標準授權 | 480 x 457 px | JPG | 13 點 |
標準授權 | 800 x 762 px | JPG | 15 點 |
標準授權 | 1774 x 1690 px | JPG | 18 點 |
標準授權 | 2291 x 2182 px | JPG | 20 點 |
標準授權 | 3030 x 2886 px | JPG | 22 點 |
標準授權 | 3549 x 3380 px | JPG | 23 點 |
標準授權 | 4285 x 4081 px | TIF | 39 點 |
進階授權 | 3549 x 3380 px | JPG | 88 點 |
進階授權 | 3549 x 3380 px | JPG | 88 點 |
進階授權 | 3549 x 3380 px | JPG | 88 點 |