Plant Image
Plants
- Sue Carnahan @http://swbiodiversity.org, Usage Rights: Attribution-Non-Commercial (CC BY-NC)


Yavapai County Native & Naturalized Plants

Setaria grisebachii - Grisebach's bristlegrass

Plant Form: Grass

Family: Poaceae


   
 
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Spikelets
Sue Carnahan @http://swbiodiversity.org, Usage Rights: CC BY-NC (Attribution-Non-Commercial)
Seedhead
Patrick Alexander @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)
  Grass Description -   Glossary of Grass Terminology


Origin: Native    Season: Warm
Habitat Description: Found on rocky slopes, washes, and in open woodlands.
Plant Communities:Interior Chaparral, Semidesert Grasslands, Pinyon Juniper Woodland
Elevation: 2000 - 6500 feet


General Description

Desc: Distinguished by being an annual with densely hairy sheaths; loose, interrupted seedheads which taper toward the apex; 1 to 2 bristles below each spikelet; finely wrinkled lemmas.
Identification Notes: Annual, 6 to 20 inches tall; seedheads loosely spike-like, interrupted, often purple, tapering at apex; bristles subtend spikelets; stems often bent, spreading, branching at the base; sheaths densely hairy; internodes smooth nodes microscopically hairy.
Grass Type: Annual  Rhizomes: Y  Stolons: Y
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: Aug - Dec
Flower Characteristics

Number of Flowers per Spikelet: Multi-flowered  Spikelets One-sided: N
Awns: Absent   Three Awns: N  Awns Bent: N
Flower and Seedhead Notes: Panicles 1 to 6 inches long,loosely flowered and tapering to a point; spikelets 1/16 inch long; lower glumes about one third as long as the spikelets, distinctly 3-veined.
Vegetative Charcteristics

Blade Hairy: Y    Blade with White Margins: N    Blade Cross section: Flat
Blade Notes: Blades lance-shaped, widest below mid-point of the blade, tapering to a point, 1/16 to 1/2 inch wide; leaf blades mostly flat, more or less hairy, scabrous, roughened or wrinkled.
Sheath Hairy: Y    Tuft of Hairs at top of Sheath or Collar: N    Ligules: Hairy
Auricles (Ear-like lobes at collar area: N

Forage Value: Not available.


  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  
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