Russian thistle is also known by which of the following names?

The name "Russian thistle" is commonly used to refer to the plant species known scientifically as Salsola tragus. However, it is incorrect to associate Russian thistle with "Bull Thistle," as that name refers to a different plant, Cirsium vulgare. Russian thistle, which is often recognized for its characteristic spiny appearance, is more commonly recognized by names such as "Tumbleweed," owing to its ability to break off at the stem and roll across the landscape in windy conditions.

The options provided include a mix of other plant names that are not synonymous with Russian thistle. For instance, "Coast Fiddleneck" pertains to a completely different species, Amsinckia menziesii, while "Mayweed Chamomile" refers to another plant known as Anthemis cotula, commonly associated with its strong odor and medicinal uses. "Jointed Goatgrass" is known scientifically as Aegilops cylindrica and is a type of grass, which further emphasizes the diversity of plant species that these names represent.

Understanding the common names and scientific identifiers of various plants is crucial in agriculture and herbicide application, as it allows for proper identification and management strategies tailored to specific weed species.