western ragweed

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Noun1.western ragweed - coarse perennial ragweed with creeping roots of dry barren lands of southwestern United States and Mexicowestern ragweed - coarse perennial ragweed with creeping roots of dry barren lands of southwestern United States and Mexico
Ambrosia psilostachya, perennial ragweed
ambrosia, bitterweed, ragweed - any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma
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Abundant forbs include woolly plantain (Plantago patagonica), western ragweed (Ambrosia psilostachya), Indian blanket (Gaillardia pulchella), horsemint (Mentha spicata), buckwheat (Eriogonum species), and sunflower species (Helianthus species).
Preference of pen-reared northern bobwhite among native plant seeds of the sand sagebrush-mixed prairie
Other dominant forbs within quadrats at the grazed site were western ragweed (Ambrosia psilostachya), common broomweed (Gutierrezia dracunculoides), and hog potato (Hoffmannseggia glauca).
Differential use of grazed and ungrazed plots by Dipodomys elator (Mammalia: heteromyidae) in north central texas
Some of Texas' most common weeds--like western ragweed, slim aster and Mexican hat--are happy to provide a home for the bacteria, and they are all difficult to keep away from a vineyard.
Knowing the enemy: Texas stresses prevention in Pierce's disease battle
Lowland native prairie sites with forbs and shrubs contained western ragweed (Ambrosia psilostachya), giant ragweed (A.
Communities of small mammals in six grass-dominated habitats of southeastern Oklahoma
Other herbaceous dominants included Texas broomweed, hog potato (Hoffmannseggia glauca), and western ragweed (Ambrosia psilostachya) (Table 1).
Changes in vegetation patterns and their effect on Texas kangaroo rats (Dipodomys elator)
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