Bailey Arboretum is home to some of the first Dawn Redwoods planted in the US. The individual marked and photographed in this observation is the tallest on site, and likely tallest in the State, with an incredible growth rate in the >70 years since it was planted. Bailey has a sign pointing out the "largest" tree present, on one of the other lawns, which is really just a moderate specimen with a very large basal flare. I think the tall specimen is more impressive.
Urweltmammutbaum (Metasequoia glyptostroboides) im Tertiärgarten im Neuenheimer Feld in Heidelberg
Seen at the Buffalo Botanical Gardens.
Metasequoia glyptostroboides, the dawn redwood, is a fast-growing, critically endangered coniferous tree, the sole living species of the genus Metasequoia, one of three species in the subfamily Sequoioideae. It is native to the Sichuan-Hubei region of China. Although shortest of the redwoods, it grows to at least 200 ft (61 m) in height.