Print Report

A3873 Pennisetum setaceum - Pennisetum ciliare Ruderal Grassland Alliance

Type Concept Sentence: This alliance consists of grasslands where Pennisetum setaceum and/or Pennisetum ciliare or other Pennisetum species are dominant or codominant with other non-native species in the herbaceous layer. It is found in California, in frost-free regions, primarily coastal, but extending east into the edges of the Colorado Desert. Habitats are steep coastal cliffs, bluffs, road-cuts, coastal dunes, coastal scrub, and desert scrub.


Common (Translated Scientific) Name: Crimson Fountaingrass - Buffelgrass Ruderal Grassland Alliance

Colloquial Name: Ruderal Crimson Fountaingrass - Buffelgrass Grassland

Hierarchy Level:  Alliance

Type Concept: This alliance consists of grasslands where Pennisetum setaceum and/or Pennisetum ciliare or other Pennisetum species are dominant or codominant with other non-native species in the herbaceous layer. Herbs are <3 m tall, and the canopy is open to intermittent. Emergent shrub and tree layers may occur at low cover. Pennisetum setaceum and especially Pennisetum ciliare are adapted to fire and increase following burns, contributing to their spread. Both grasses establish better than native plants after a fire, and as stands age, they raise fuel loads. This alliance occurs in California at elevations ranging from sea level to 35 m. Habitats are steep coastal cliffs, bluffs, road-cuts, coastal dunes, coastal scrub, and desert scrub in areas with mild, frost-free winters.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: All species of Pennisetum are highly invasive in the warm deserts of North America, from southern California, across the Colorado, Mojave, and Sonoran deserts into southern Texas. As described by Sawyer et al. (2009) for California, these are primarily coastal in California, with some occurring in the deserts of that state.

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: Perennial herbaceous graminoids <3 m in height.

Floristics: These grasslands are dominated or codominated by Pennisetum setaceum and/or Pennisetum ciliare or other Pennisetum species along with other non-native species in the herbaceous layer. Emergent shrub and tree layers may occur at low cover.

Dynamics:  Pennisetum setaceum and especially Pennisetum ciliare are adapted to fire and increase following burns, contributing to their spread. Both grasses establish better than native plants after a fire, and as stands age, they raise fuel loads (Lovich 2000, DiTomaso and Healy 2007).

Environmental Description:  Habitats are steep coastal cliffs, bluffs, road-cuts, coastal dunes, coastal scrub, and desert scrub in areas with mild, frost-free winters. Elevation ranges from 0-35 m.

Geographic Range: California, frost-free regions, primarily coastal, but extending east into the edges of the Colorado Desert.

Nations: MX,US

States/Provinces:  CA, MXBCN




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: GNA

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: > Pennisetum setaceum (Fountain grass swards) Semi-natural Stands (Sawyer et al. 2009) [42.085.00]
> Pennisetum setaceum Herbaceous Alliance (Keeler-Wolf and Evens 2006)

Concept Author(s): M.S. Reid, in Faber-Langendoen et al. (2013)

Author of Description: M.S. Reid

Acknowledgements: No Data Available

Version Date: 12-18-14

  • DiTomaso, J. M., and E. A. Healy. 2007. Weeds of California and other western States. Two volumes. Publication 3488. University of California, Agriculture and Natural Resources, Oakland, CA. 1808 pp.
  • Faber-Langendoen, D., J. Drake, M. Hall, G. Kittel, S. Menard, C. Nordman, M. Pyne, M. Reid, M. Russo, K. Schulz, L. Sneddon, K. Snow, and J. Teague. 2013-2019b. Screening alliances for induction into the U.S. National Vegetation Classification: Part 1 - Alliance concept review. NatureServe, Arlington, VA.
  • Keeler-Wolf, T., and J. Evens. 2006. Vegetation classification of the Santa Monica Mountains National Recreation Area and environs in Ventura and Los Angeles counties, California. A report submitted to National Park Service, Santa Monica Mountains National Recreation Area by California Department of Fish and Game, Wildlife and Habitat Data Analysis Branch and The California Native Plant Society, Vegetation Program, Sacramento, CA.
  • Lovich, J. 2000. Tamarix ramosissima/Tamarix chinensis/Tamarix gallica/Tamarix parviflora. Pages 312-317 in: C. C. Bossard, J. M. Randall, and M. C. Hoshovsky, editors. Invasive plants of California''s wildlands, University of California Press, Berkeley.
  • Sawyer, J. O., T. Keeler-Wolf, and J. Evens. 2009. A manual of California vegetation. Second edition. California Native Plant Society, Sacramento CA. 1300 pp.
  • Sproul, F., T. Keeler-Wolf, P. Gordon-Reedy, J. Dunn, A. Klein, and K. Harper. 2011. Vegetation classification manual for western San Diego County. AECOM, California Department of Fish and Game, San Diego Area Governments.