Plant Image
Herbarium specimen
- Arizona State University Vascular Plant Herbarium, Usage Rights: Non-Commercial (CC BY-NC)


Yavapai County Native & Naturalized Plants

Aristida divaricata - poverty threeawn

Plant Form: Grass

Family: Poaceae


   
 
line decor
  Home   Plant Communities Plant List Search Forbs and Subshrubs Search Grasses Search Woody Plants Additional Resources About this Website
line decor
 

Click on Any Image for a Larger View

Spikelets
ASU Vascular Plant Herbarium, Usage Rights: Attribution-Non-Commercial (CC BY-NC)
  Grass Description -   Glossary of Grass Terminology


Origin: Native    Season: Warm
Habitat Description: Dry, open slopes or woodlands.
Plant Communities:Interior Chaparral, Semidesert Grasslands, Pinyon Juniper Woodland, Montane Conifer Forest
Elevation: 4000 - 7000 feet

Similar Species: Aristida barbata
General Description

Desc: Forms clumps of unbranched stems. Leaves are mostly basal and roll along the edges. The seed has a twisted tip and three awns.
Identification Notes: Tufted perennial grass with open branched seedheads spreading at the base, branchlets appressed; lateral awn branches more than 1/16 inch long, usually nearly as long as the central one; basal portion of awn spirally twisted; collars densely hairy.
Grass Type: Perennial bunchgrass  Rhizomes: N  Stolons: N
Large Dense Clump (> 2 feet): N  Bushy (highly branched): N
Height with Seedheads: 12 to 24 inches
Seedhead Structure: Branched - open and spreading  Seedhead Droops: N
Flowering Period: Jul - Oct
Flower Characteristics

Number of Flowers per Spikelet: One-flowered  Spikelets One-sided: N
Awns: 1/4 inch to 1 inch   Three Awns: Y  Awns Bent: Y
Flower and Seedhead Notes: Very open, spreading branches extend at right angles from the central axis. Each spikelet bears three spreading, hairlike awns at its tip; 1/2 to 3/4 inch, not disarticulating (separating) at maturity.
Vegetative Charcteristics

Blade Hairy: N    Blade with White Margins: N    Blade Cross section: Flat or involute
Blade Notes: Blades 2 to 8 inches long, 1/16 inch wide, flat to loosely involute, smooth.
Sheath Hairy: N    Tuft of Hairs at top of Sheath or Collar: Y    Ligules: Hairy
Auricles (Ear-like lobes at collar area: N

Forage Value: Fair to poor.


  Arizona Cooperative Extension
Yavapai County
840 Rodeo Dr #C
Prescott, AZ 86305
(928) 445-6590
Version 8.0  
http://cales.arizona.edu/yavapaiplants/SpeciesDetailGrass.php  
Last Updated: Dec 13, 2022
Content Questions/Comments: Email Matt Halldorson  
Legal Disclaimer