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Plant
Yavapai County Native & Naturalized Plants


Aristida schiedeana - single threeawn

Plant Form:Grass

Family: Poaceae


   
 
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Seedhead

Patrick Alexander @http://swbiodiversity.org
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Spikelets

Patrick Alexander @http://swbiodiversity.org
  Grass Description -   Glossary of Grass Terminology

Origin: Native    Season: Cool and Warm
Habitat Description: Grows on rocky slopes and plains, generally in pinyon-juniper, oak, or ponderosa pine communities.
Plant Communities: Desert Scrub, Interior Chaparral, Semidesert Grasslands, Pinyon Juniper Woodland, Montane Conifer Forest
Elevation: 3500 - 7800 feet

General Description

Desc: The several stems are attached at the base of the plant and are usually wide spreading.
Identification notes: Awns markedly unequal; the lateral awns are absent or less than 1/2 as long as the central awns. The seedheads are 3 to 12 inches long and 1-1/2 to 10 inches wide and hairy at the base of their branches.
Grass Type: Perennial mat or sod-forming  Rhizomes: Y  Stolons: N
Large Dense Clump (> 2 feet): N  Bushy (highly branched): Y
Height with Seedheads: 24 to 36 inches
Seedhead Structure: Branched - open and spreading  Seedhead Droops: Y
Flowering Period: Apr - Oct



Flower Characteristics

Number of Flowers per Spikelet: One-flowered  Spikelets One-sided: N
Awns: 1/4 inch to 1 inch   Three Awns: N  Awns Bent: Y

Flower and Seedhead Notes: Seedheads long and narrow, consisting of many slender branches.


Vegetative Characteristics

Blade Hairy: N  Blade with White Margin: N  Blade Cross Section: Flat  
Blade Notes: Blades 3 to 12 inches long, 1/8 inch wide, usually flat, often curled at maturity.
Sheath Hairy: N  Tuft of Hairs Top of Sheath or Collar: Y  Ligules: Hairy
Auricles (Ear-like lobes at base of blades): N
Vegetative Notes: Sheaths longer or shorter than the internodes. Collars are densely to sparsely hairy or without hairs.

Forage Value: Although generally poor forage grasses and, because of the calluses, potentially harmful to grazing animals, they are an important source of spring forage on western range-lands. Quail and small mammals eat small amounts of the seed.


  Arizona Cooperative Extension
Yavapai County
840 Rodeo Dr #C
Prescott, AZ 86305
(928) 445-6590
Version 7.0  
http://cals.arizona.edu/yavapaiplants/SpeciesDetailGrass.php  
Last Updated: May 10, 2017  
Content Questions/Comments: Email Jeff Schalau  
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