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Lemmon's needlegrass

Scientific Name: Achnatherum lemmonii var. lemmonii

Family: Poaceae

Category: Monocot

Growth: Graminoid

Duration: Perennial

Other Names:

       

Lemmon's Needlegrass (Achnatherum lemmonii)

Lemmon's Needlegrass, scientifically known as Achnatherum lemmonii, is a native perennial bunch grass found throughout the western United States. It is named for its spike-like seeds.

Considerations for Pets

  • Named for its spike-like seeds.

Taxonomy and Nomenclature

  • Scientific Name: Achnatherum lemmonii (Vasey) Barkworth
  • Common Name: Lemmon's Needlegrass, Lemmon's Stipa, Lemmon Needle Grass
  • Family: Poaceae (Grass family)
  • Genus: Achnatherum
  • Species: lemmonii
  • Synonyms/Inactive Names: Stipa lemmonii
  • Subspecies:
    • Achnatherum lemmonii subsp. lemmonii
    • Achnatherum lemmonii subsp. pubescens
    • Achnatherum lemmonii var. jonesii
    • Achnatherum lemmonii var. lemmonii

Distribution and Habitat

  • Native to western North America.
  • Found throughout the western United States.
  • Specific locations mentioned include the Columbia River Gorge of Oregon and Washington, Tracy Hill at Catherine Creek, Arizona, and California.
  • Thrives on sunny, dry, low fertility soils.

Ecological Role

  • Valued for its soil stabilization and revegetating strengths.

Morphological Characteristics

  • Perennial tufted grass.
  • Slow growth habit.
  • Grows to an average height of 3 ft (90 cm).

Associations

  • Forms communities with Racomitrium canescens on shallow, gravelly soils and rock outcrops.
  • Found in grassland areas with purple needlegrass (Nassella pulchra) and pine bluegrass (Poa secunda).
  • Can affect the growth of bluebunch wheatgrass (Pseudoroegneria spicata).

Uses

  • Desirable cool-season grass.

Further Information

  • Updates can be sent to trandolph@csuchico.edu.
  • Information available on Garden Guides.