Suchergebnisse
Suchergebnisse:
7. Feb. 2022 · Part cultural icon and part invasive nuisance, tumbleweeds have an intriguing and tangled history.
- Sidney Stevens
A tumbleweed is a structural part of the above-ground anatomy of a number of species of plants. It is a diaspore that, once mature and dry, detaches from its root or stem and rolls due to the force of the wind.
Salsola tragus, often known by its synonym Kali tragus [4] is a species of flowering plant in the family Amaranthaceae. It is known by various common names such as prickly Russian thistle, [5] windwitch, or common saltwort. It is widely known simply as tumbleweed because, in many regions of the United States, it is the most common ...
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.
- The Editors of Encyclopaedia Britannica
Learn how Russian thistle, also known as tumbleweed, became a symbol of the American West and a scourge for ranchers and farmers. Discover its origin, invasion, and adaptation in this article from the December 2013 issue of National Geographic.
- 2 Min.
The arrival and spread of Russian thistle is considered to be one of the fastest plant invasions in the history of the United States. Today the plant is found in all states except Alaska and Florida. Tumbleweeds in a roadside ditch in Haskell County, Kansas, being burned in 1941.
The Situation: Russian thistle, commonly known as tumbleweed, is a profusely branched annual herb. Its efficient taproot, abundant seed production and reduced leaf surface adapt this weed well to disturbed semiarid agricultural environments, rangeland and nonagricultural areas such as vacant resident lots and railroad or highway rights-of-way ...
