dawn redwood

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A coniferous Chinese tree (Metasequoia glyptostroboides) having deciduous, flat, opposite leaves and small globular cones. It is widely cultivated in North America and Europe.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun large fast-growing Chinese monoecious tree having flat bright-green deciduous leaves and small globular cones; commonly cultivated in United States as an ornamental; known as a fossil before being discovered in China