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slimspike threeawn

Scientific Name: Aristida longespica var. geniculata

Family: Poaceae

Category: Monocot

Growth: Graminoid

Duration: Annual

Other Names:

       

Aristida longespica

Aristida longespica, commonly known as Slim-spike Three-awn Grass, is an annual graminoid belonging to the genus Aristida.

Common Names:

  • Slim-spike Three-awn Grass
  • Slimspike Threeawn
  • Long-spiked triple-awned grass
  • Slender Threeawn
  • Church-mouse three-awn
  • Poverty grass
  • Shinners' three-awn

Taxonomy and Nomenclature:

  • Scientific Name: Aristida longespica Poir.
  • Family: Poaceae (Grass family)
  • Synonyms: Slim-spike threeawn (FNA Ed. Comm., 2003b)
  • Subordinate Taxa: Aristida longespica var. longespica

Considerations for Pets

  • This grass has awns, which are bristle-like appendages.

Distribution and Habitat:

  • Aristida longespica is often found in arid and semi-arid areas.
  • It can be found in moist or dry, often sterile or sandy soil.
  • Specific locations include Washington D.C., Maryland, and Virginia.

Morphological Characteristics:

  • Duration: Annual. It grows for one year.
  • Spike: 6-15cm long including awns, 12-15mm broad.

Interactions with Other Organisms

  • Aristida longespica is known to interact with Sucking Insects, specifically Cicadellidae: Flexamia pictus.

Further Information:

  • Idaho Fish and Wildlife Information System Data and Maps provide information for the management and conservation of fish, wildlife, and plants.
  • Vascular Flora of the Carolinas is a resource for more information on spike characteristics.