medusahead

Cyperales > Poaceae > Taeniatherum caput-medusae (L.) Nevski
Synonym(s): medusahead rye
Medusahead is an annual grass native to the Mediterranean region. Plants are 8-24 in. (20-60 cm) tall and have few leaves. Leaves are less than 1/8 in. (0.3 cm) wide. Flowering occurs in late spring, when flower heads develop at the apex of the stems. The seed heads are what distinguish this plant from other annual grasses. Awns twist as they dry, hence the common name “medusahead”. The longer of the two awns in each spikelet is barbed. These barbs catch on fur or clothing and spread seed. Medusahead was first collected in Oregon, in 1887. Plants invade dry, open lands with frequent disturbance.

Identification, Biology, Control and Management Resources

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Number:1459334
Description: Plant(s);
Photographer:Steve Dewey, Utah State University
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Number:1459342
Description: Feature(s); Medusahead on left, cheatgrass on right
Photographer:Steve Dewey, Utah State University
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Number:2149099
Description: Flower(s);
Photographer:Chris Evans, River to River CWMA
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Number:1459335
Description: Fruit(s);
Photographer:Steve Dewey, Utah State University
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Number:5309011
Description: Fruit(s);
Photographer:Steve Hurst, USDA NRCS PLANTS Database
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Number:1459331
Description: Fruit(s);
Photographer:Steve Dewey, Utah State University
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Number:1459332
Description: Infestation;
Photographer:Steve Dewey, Utah State University
 Additional Resolutions and Image Usage
 
Number:1459337
Description: Infestation;
Photographer:Steve Dewey, Utah State University
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Number:1459340
Description: Prescribed Fire;
Photographer:Steve Dewey, Utah State University
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Number:1299155
Description: Control; burning
Photographer:Steve Dewey, Utah State University
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Number:5307038
Description: Diagram or Graphic; Hitchcock, A.S. (rev. A. Chase). 1950. Manual of the grasses of the United States. USDA Misc. Publ. No. 200. Washington, DC.
Photographer:USDA PLANTS Database, USDA NRCS PLANTS Database
 Additional Resolutions and Image Usage
 

External Links

Invasive Reference(s)

Subject Reference(s)

  • USDA, NRCS. 2001. The PLANTS Database, Version 3.1, National Plant Data Center, Baton Rouge, LA 70874-4490 USA. - http://plants.usda.gov/