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U.S. Forest Service

Threatened, Endangered, and Proposed (TEP) Plant Profile

Poa atropurpurea, San Bernardino bluegrass. San Bernardino bluegrass, also known as Bear Valley bluegrass, in full flower. This species is dioecious, meaning that any individual plant has all staminate (male) flowers or all pistillate (female) flowers. This individual is staminate, as you can see from the pale yellow anthers, the pollen-bearing parts of the stamens, dangling from the purplish flowers. Photo by Chelsea Vollmer, San Bernardino National Forest.

Poa atropurpurea, San Bernardino bluegrass range map. Poa atropurpurea range map.

Poa atropurpurea, San Bernardino bluegrass

ESA Status

Visit the U.S. Fish & Wildlife Service Species Profile link below for links to listing and other USFWS documents.


  • Loss and degradation of habitat from urban and recreational development
  • Fragmentation from ORV traffic
  • Grazing by livestock and feral burros
  • Hybridization with invasive, co-occurring, non-native bluegrass (Poa pratensis)
  • Competition from invasive plants

Conservation Status

National Forest and Grassland Occurrence

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