三种杨柳科杨属植物的通称,即欧洲颤杨(P.tremula)、美洲颤杨(P.tremuloides)、美洲锯齿白杨(P.grandidentata)。
这些树干光滑的美洲山杨,或者叫做“颤杨”有着一个秘密。
The smooth white trunk of Populus tremuloides, or “Quaking Aspen, ” hides a secret.
生长在西科罗拉多州埃尔克山脉中的颤杨,其叶子会在微风中颤抖,在北美非常普遍。
Quaking aspens like these in the Elk Mountains of western Colorado, whose leaves tremble in the slightest wind, are common across North America.
就单棵树(individual tree)来说Pando并不是最古老的树,但是生长在犹他州的无性系颤杨(Quaking Aspen)确又的确是最古老的。
While Pando isn't technically the oldest individual tree, this clonal colony of Quaking Aspen in Utah is truly ancient.
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