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


Yavapai County Native & Naturalized Plants

Bromus porteri - Porter brome

Synonyms: Bromopsis porteri, Bromus anomalus
Other Common Names: nodding brome
Plant Form: Grass

Family: Poaceae


   
 
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Seedhead
Max Licher @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)
Spikelets
Max Licher @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)
  Grass Description -   Glossary of Grass Terminology


Origin: Native    Season: Warm
Habitat Description: Montane meadows, grassy slopes, moist grasslands, forest edges and open forest habitats.
Plant Communities:Semidesert Grasslands, Pinyon Juniper Woodland, Montane Conifer Forest
Elevation: 5500 - 11500 feet

Similar Species: Bromus anomalus, Bromus ciliatus
General Description

Desc: Stems solitary or in small tufts, slender, usually with fine, short hairs at the nodes. Seedhead is branched, loose, open and nodding.
Identification Notes: Seedheads on 1 to 2 feet stems; up to 4 inches long; drooping. Spikelets rounded; lemmas with short, fine hairs on the back; rhizomes absent. Differs from B. anomalus due to lack of auricles and B. ciliatus which does not have hairy lemmas.
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: Y
Flowering Period: Jun - Sep
Flower Characteristics

Number of Flowers per Spikelet: Multi-flowered  Spikelets One-sided: N
Awns: Less than 1/4 inch   Three Awns: N  Awns Bent: N
Flower and Seedhead Notes: Seedhead is branched, open, nodding, sometimes 1-sided, with 1 to 2 spikelets. Spikelets are 3/4 to 1 inch long with mostly 5 to 11 flowers.
Vegetative Charcteristics

Blade Hairy: N    Blade with White Margins: N    Blade Cross section: Flat
Blade Notes: Both basal and stem leaves, 1/8 to 3/16 inches wide and 1-1/4 to 14 inches long. The leaves may be smooth or occasionally rough to the touch.
Sheath Hairy: Y    Tuft of Hairs at top of Sheath or Collar: N    Ligules: Membranous
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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