When the leaves of quaking aspens (Populus tremuloides) turn yellow in the fall, a slight breeze can turn a stand of trees into quivering gold. Quaking aspens "quake" because of the way the leaves ...

1. Populus tremuloides and P. grandidentata produce seeds in great abundance in central and eastern United States. The former seeds mature approximately three days earlier than the latter. From six to ...

Bulletin of the Torrey Botanical Club, Vol. 90, No. 5 (Sep. - Oct., 1963), pp. 298-308 (11 pages) The composition, biomass and productivity of two upland even-aged Populus forests, one near Dorset, ...

DNA samples from one of the world’s largest and oldest plants — a quaking aspen tree (Populus tremuloides) in Utah called Pando — have helped researchers to determine its age and revealed ...