Pando is an ancient quaking aspen tree (Populus tremuloides) with 47,000 genetically identical stems, or tree trunks, connected to a vast underground root system. Each stem is a clone of the one ...

If the root system between patches is severed ... 2008). The ability of aspen to produce whole stands of "trees" vegetatively provides yet another key element in explaining the species’ ability ...

Young aspens often don't survive because of factors such as grazing elk, according to a study by Northern Arizona University researchers.