Mary Jo Walker
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The tumbleweed diaspore disperses seeds, but the tumbleweed strategy is not limited to the seed plants; some species of spore-bearing cryptogams—such as Selaginella—form tumbleweeds, and some fungi that resemble puffballs dry out, break free of their attachments and are similarly tumbled by the wind, dispersing spores as they go.
Feb 7, 2022 · Part cultural icon and part invasive nuisance, tumbleweeds have an intriguing and tangled history.
This is where the name Russian thistle originates, said Ayres, although tumbleweeds aren’t thistles. The weed spread quickly through the United States — on rail cars, through contamination of ...
It’s silent and windless. Yet one by one, like wolves in the night, tumbleweeds start gathering around them. “They’re following us,” the heroine cries.
Mar 8, 2024 · Tumbleweeds originated in Russia and Siberia and they were brought to the United States in the 1870s, hidden among imported flax seeds, according to University of California, Riverside. It only took 20 years for the plants to spread throughout the western United States and parts of Canada.
Jun 14, 2024 · Tumbleweed, plant that breaks away from its roots and is driven about by the wind as a light rolling mass, scattering seeds as it goes. Examples include pigweed (Amaranth retroflexus, a widespread weed in the western United States) and other amaranths, tumbling mustard, Russian thistle, the steppe.
May 6, 2018 · Tumbleweeds might be the iconic props of classic Westerns. But in real life, they’re not only a noxious weed, but one that moves around.
