Maple Acer is a genus of trees from the soap family. In earlier taxonomic systems, it was classified in the maple family Aceraceae, which, however, was not accepted by the phylogenetic concept of plant systematics. Representatives of the genus are usually tall deciduous trees, but some species have only a weaker growth and are either lower trees or shrubs. There are also several types of evergreens. The leaves are friendly, usually palmate, with a striking autumn color. The flowers are regular, arranged in erect or drooping inflorescences; it develops before, at the same time as, or after leafing. They are pollinated except by exceptional insects. The fruits are winged dicots, technically called samaras, well adapted to spread by wind.
圖片編號:
266653602
拍攝者:
Helenauditore
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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 | 216 x 480 | JPG | 13 | |
標準授權 | S | 360 x 800 | JPG | 15 | |
標準授權 | M | 1162 x 2580 | JPG | 18 | |
標準授權 | L | 1816 x 4032 | JPG | 20 | |
標準授權 | XL | 1898 x 4214 | JPG | 22 | |
標準授權 | MAX | 2324 x 5161 | JPG | 23 | |
標準授權 | TIFF | 2568 x 5702 | TIF | 39 | |
進階授權 | WEL | 2324 x 5161 | JPG | 88 | |
進階授權 | PEL | 2324 x 5161 | JPG | 88 | |
進階授權 | UEL | 2324 x 5161 | JPG | 88 |
XS
S
M
L
XL
MAX
TIFF
WEL
PEL
UEL
標準授權 | 216 x 480 px | JPG | 13 點 |
標準授權 | 360 x 800 px | JPG | 15 點 |
標準授權 | 1162 x 2580 px | JPG | 18 點 |
標準授權 | 1816 x 4032 px | JPG | 20 點 |
標準授權 | 1898 x 4214 px | JPG | 22 點 |
標準授權 | 2324 x 5161 px | JPG | 23 點 |
標準授權 | 2568 x 5702 px | TIF | 39 點 |
進階授權 | 2324 x 5161 px | JPG | 88 點 |
進階授權 | 2324 x 5161 px | JPG | 88 點 |
進階授權 | 2324 x 5161 px | JPG | 88 點 |