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tall threeawn

Scientific Name: Aristida patula

Family: Poaceae

Category: Monocot

Growth: Graminoid

Duration: Perennial

Other Names:

       

Aristida patula - Tall Threeawn

Aristida patula, commonly known as Tall Threeawn, is a perennial graminoid belonging to the genus Aristida. Other common names include prairie threeawn and oldfield threeawn. It is appreciated for its subtle yet attractive addition to meadow plantings due to its tall branching flower stalk.

Considerations for Pets

  • Several common names include "wiregrass" and "ticklegrass", which may indicate potential physical characteristics that could be irritating.
  • The presence of "awns" on the florets of prairie threeawn might pose a physical hazard.

Considerations for Children

  • Several common names include "wiregrass" and "ticklegrass", which may indicate potential physical characteristics that could be irritating.
  • The presence of "awns" on the florets of prairie threeawn might pose a physical hazard.

Taxonomy and Nomenclature

  • Scientific Name: Aristida patula Chapm. ex Nash
  • Family: Poaceae (Grass Family)
  • Subfamily: Aristidoideae
  • Tribe: Aristideae
  • Synonyms: Aristida patula Hitchcock, A.S. (rev.)

Distribution and Habitat

  • Aristida patula is a Florida endemic.

Morphological Characteristics

  • This perennial bunchgrass produces stems up to 100 centimeters tall.
  • Stems are branching, gray-green, and may be purple-tinted, ranging from about 30 to 70 centimeters tall.
  • Prairie threeawn, a related species, is a warm-season annual, 8-12 inches tall, with a broad base panicle containing florets with a three-awned lemma.
  • Culms (stems) can be wiry, hollow, and 12 to 24 inches tall, much branched at the base.

Related Species

  • Aristida purpurascens (arrowfeather threeawn)
  • Aristida purpurea (Purple threeawn)
  • Aristida ramosissima (S-curve threeawn, Chase threeawn)
  • Aristida condensata (Big threeawn)
  • Aristida gyrans (Corkscrew threeawn)
  • Aristida lanosa (Longleaf threeawn)
  • Aristida dichotoma var. dichotoma (churchmouse threeawn)
  • Aristida longespica var. geniculata (Kearney threeawn)
  • Aristida warburgii (Threeawn Speargrass)

Further Information

  • USDA Plants Profile &#8212 Aristida purpurascens (arrowfeather threeawn)
  • Idaho Fish and Wildlife Information System Data and Maps
  • Discover Life