| Letter | Tree | River | Park |
|---|---|---|---|
| T | Tan Oak | Thames | Theodore Roosevelt National Park |
| C | Cedar | Colorado River | Crater Lake National Park |
| L | Larch | Loire | Lassen Volcanic National Park |
| O | Oak | Ohio River | Olympic National Park |
| W | Walnut | Willamette River | Wind Cave National Park |
| E | Elm | Elbe | Everglades National Park |
The Tan Oak (Notholithocarpus densiflorus) is an evergreen tree native to the western United States. It produces acorns and has thick, furry bark. Despite its name, it's not a true oak but belongs to its own genus.
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The Atlantic White Cedar (Chamaecyparis thyoides) is a species of cypress native to the Atlantic coast of North America. It thrives in swamps and bogs, producing aromatic wood valued for its resistance to decay.
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The European Larch (Larix decidua) is a deciduous conifer native to the mountains of central Europe. Unlike most conifers, it loses its needles in autumn, turning golden-yellow before dropping. It's valued for its durable timber.
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