Aegilops triuncialis

Aegilops triuncialis_barb goatgrass_ JM Di Tomaso
Photo courtesy Joseph DiTomaso

Synonyms: barbed goatgrass, several other scientific names

Common names: barb goatgrass

Aegilops triuncialis (barb goatgrass) is an annual grass (family Poaceae) that grows in rangelands, grasslands, and oak woodlands. It is becoming a dominant grass in foothill grasslands of central California. This weed can directly injure livestock by lodging in their eyes or mouths, and is unpalatable to cattle.

Rating: High

Cal-IPC Resources

  • Plant Assessment Form - Information gathered by Cal-IPC on the impacts, rate of spread, and distribution of invasive plants in California. Does not include management information.
  • CalWeedMapper - Statewide maps, climate models, and reports.
  • Cal-IPC News - Our quarterly newsletter. Each issue is available as a pdf.
  • Cal-IPC Symposium Proceedings - Presentations and papers from our annual Symposium.
  • Don't Plant a Pest! - Select your region to find non-invasive alternatives to ornamental species. Also see our statewide brochure on trees.

    Other Resources

    Symposium Presentations

    • Carey, C. and S. C. Hart (2011). Alteration of nitrogen cycling processes by exotic annuals in a California grassland. Cal-IPC 2011 Symposium. Tahoe City, CA, California Invasive Plant Council.
    • Aigner, P. A. and R. J. Woerly (2010). Control of barbed goatgrass in serpentine grasslands. Cal-IPC 2010 Symposium. Ventura, CA, California Invasive Plant Council.
    • Morrison, E., A. Battaglia, et al. (2010). The effects of climate change on the growth of Barbed Goatgrass (Aegilops triuncialis) in serpentine grasslands. Cal-IPC 2010 Symposium. Ventura, CA, California Invasive Plant Council
    • Eviner, V., K. J. Rice, et al. (2009). Controlling the invasion of noxious rangeland weeds into an exotic-dominated grassland: Is there a role for native grass reseeding? . Cal-IPC Symposium. Visalia, CA Cal-IPC.
    • DiTomaso, J. M. (2005). Efficacy and safety of new herbicides on the horizon. California Invasive Plant Council Symposium 2005. Chico, CA.
    • Clines, J., J. DiTomaso, et al. (2004). Grasses working group. California Invasive Plant Council Symposium 2004. Ventura, CA.
    • Gelbard, J. L. and S. Harrison (2001). Interactive effects of roads, soils, and exposure on invasion of Calif. grasslands. California Exotic Pest Plant Council Symposium 2001. San Diego, CA.
    • DiTomaso, J. M., A. Merenlender, et al. (2000). Control of barbed goatgrass using prescribed burning. California Exotic Pest Plant Council Symposium 2000. Concord, CA.
    • Thomsen, C. D. (2000). Bear Creek watershed restoration program. California Exotic Pest Plant Council Symposium 2000. Concord, CA.
    • Thomsen, C. D., W. A. Williams, et al. (1996). Yellow starthistle management with grazing, mowing, and competitive plantings. California Exotic Pest Plant Council Symposium '96. San Diego, CA.

    Cal-IPC News Articles

    • None for this species.