Two people stand on a grassy hillside in the King Range Wilderness, overlooking the Pacific Ocean.
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U.S. DEPARTMENT OF THE INTERIOR
BUREAU OF LAND MANAGEMENT
Wildhorses at Sand Creek Barrel Springs Byway at sunset.  Photo by Laurie Sada Upper Wall Canyon creek.  Photo by B. Parrott Windmill at Sunset in Surprise Valley Sunset reflection on Upper Lake in Surprise Valley.
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Noxious Weeds

Medusahead (Taeniatherum caput-medusae) 
Grass Family (Poaceae)

Photo of Medussahead

Description: Aggressive winter annual 1/2 to 2 feet. Leaf blades generally 1/8 inch wide or less, rolled. Inflorescence long-awned spike nearly as wide as long. Mature awns or beards twisted, 1 to 4 inches long, stiff, finely barbed. Sometimes confused with foxtail or squirreltail, however spike head does not break apart as seeds mature. Individual awn-florets fall away, leaving a bristly head of awn-like glumes that will persist over winter.

Habitat:Native to Eurasia. Extremely competitive crowding out many native and desirable plants, invaiding millions of acres of semi-arid rangeland. Appears more commonly on high shrink-swell clay soils. Infested rangelands have suffered up to 75% reductions in grazing capacity. Introduces fire into non-fire prone ecosystems. Control of small, isolated infestations is critical.

Distribution: Medusahead is found scattered throughout most of northeastern California's rangelands.

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