Pando is an ancient quaking aspen tree (Populus tremuloides ... to 40 blue whales or three times the world's largest single-stem tree — California's General Sherman giant sequoia (Sequoiadendron ...

All of these structures arose from a single aspen seed, often in the very ... Interspecific variability of stem photosynthesis among tree species. Tree Physiology 27, 53-61 (2007).