tule
TOO-lee
A tall, dense, freshwater marsh plant (bulrush) native to the western United States, growing in thick stands around lakes, marshes, and river deltas. Tule marshes once covered vast areas of California's Central Valley. The plant gives its name to tule fog — the dense, ground-level radiation fog that forms in the Central Valley in winter, reducing visibility to near zero.
Etymology
Nahuatl tollin, a bulrush. Spanish adopted it as tule, and English borrowed it from Spanish.
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