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每到秋季(10月下旬至11月上中旬),迷人的行道树良种——沼生栎的树叶呈现出红、橙、黄、绿等色彩斑斓的秋季色相,给绚丽的秋天增色添彩,令人喜爱。沼生栎原产北美洲,是广泛分布于美国东部地区各州潮湿地带的优良造林及观赏树种。沼生栎(Quercus polustris)为壳斗科栎属落叶大乔木,高可达25～36米。树冠塔形、整齐;枝条较细,垂落至地面;树皮灰褐色,光滑,小枝暗灰色,无毛;叶长椭圆形至椭圆形,长8～12厘米,具5～7波状深裂,
Every autumn (from late October to mid-November), the charming sidewalk tree species - the leaves of the marsh-leaved oaks exhibit colorful autumnal hues of red, orange, yellow and green, which add gorgeous color to the gorgeous autumn favorite. Marsh oak origin North America, is widely distributed in the humid states of eastern states of the United States excellent afforestation and ornamental species. Quercus polustris is a large deciduous tree of Quercus polustris, with a height of 25-36 meters. Tree crown tower, tidy; branches thin, drooping to the ground; bark grayish brown, smooth, twig dark gray, glabrous; leaf long oval to oval, 8 to 12 cm long, with 5-7 wavy crack,