Revision of Fossil Sequoia and Taxodium in Western North America Based on the Recent Discovery of Metasequoia: Transactions, American Philosophical So

The recently discovered redwood of China, ＂Metasequoia glyptostroboides＂ Hu & Cheng, shows close relationship to two North American trees, the coast redwood, ＂Sequoia sempervirens＂ Endlicher of the western U.S., & the swamp cypress, ＂Taxodium distichum＂ Richard of the Southeastern U.S. Foliage & cones of these living trees provide characters by which the three genera may be readily distinguished. But for nearly a century there has been confusion in the recognition of fossil specimens. The author is now able to distinguish the fossil foliage & cones of all three genera, & to assign to Metasequoia many specimens which have previously been identified as Sequoia & Taxodium. Illustrations.