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CEGL005334 Fouquieria splendens - Calliandra eriophylla Shrubland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Ocotillo - Fairy Duster Shrubland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This shrubland occurs in southern Arizona, typically on gentle to moderate slopes of ridges, foothills and mountain canyons. Sites may occur on any aspect but are typically found on warmer southern and western aspects. Plot data from Buenos Aires National Wildlife Refuge indicate an elevational range of 1090-1290 m (3580-4230 feet) on well-drained sandy loam. Substrates are often rocky with 10-50% surface rock. The vegetation is characterized by a moderately dense (30-60% cover), short-shrub canopy dominated by Calliandra eriophylla (20% cover or more) and a tall-shrub layer dominated by Fouquieria splendens with 10% or more cover. Prosopis velutina has low cover (<10%) and does not codominate the tall-shrub layer. Other shrubs include Acacia greggii, Dasylirion wheeleri, and Mimosa dysocarpa. The herbaceous layer is open to moderately dense (10-50% cover) and is dominated by mixed perennial graminoids. Characteristic species are Aristida ternipes, Bothriochloa barbinodis, Bouteloua chondrosioides, Bouteloua curtipendula, Bouteloua repens, and Setaria macrostachya. Other common species include Evolvulus arizonicus, Gutierrezia microcephala, Janusia gracilis, Krameria erecta, Mammillaria grahamii, Cylindropuntia versicolor, Opuntia engelmannii, and Phemeranthus aurantiacus. Eragrostis lehmanniana may be present but has less than 25% cover and less than a third of the total perennial graminoid cover.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: No Data Available

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: The vegetation is characterized by a moderately dense (30-60% cover), short-shrub canopy dominated by Calliandra eriophylla (20% cover or more) and a tall-shrub layer dominated by Fouquieria splendens with 10% or more cover. Prosopis velutina has low cover (<10%) and does not codominate the tall-shrub layer. Other shrubs include Acacia greggii, Dasylirion wheeleri, and Mimosa dysocarpa. The herbaceous layer is open to moderately dense (10-50% cover) and is dominated by mixed perennial graminoids. Characteristic species are Aristida ternipes, Bothriochloa barbinodis, Bouteloua chondrosioides, Bouteloua curtipendula, Bouteloua repens, and Setaria macrostachya. Other common species include Evolvulus arizonicus, Gutierrezia microcephala, Janusia gracilis, Krameria erecta, Mammillaria grahamii, Cylindropuntia versicolor (= Opuntia versicolor), Opuntia engelmannii, and Phemeranthus aurantiacus (= Talinum aurantiacum). Eragrostis lehmanniana may be present but has less than 25% cover and less than a third of the total perennial graminoid cover.

Dynamics:  No Data Available

Environmental Description:  This shrubland occurs in southern Arizona, typically on gentle to moderate slopes of ridges, foothills and mountain canyons. Sites may occur on any aspect but are typically found on warmer southern and western aspects. Plot data from Buenos Aires National Wildlife Refuge indicate an elevational range of 1090-1290 m (3580-4230 feet) on well-drained sandy loam. Substrates are often rocky with 10-50% surface rock.

Geographic Range: This desertscrub association occurs on foothills in southern Arizona and likely occurs in adjacent Sonora, Mexico.

Nations: MX?,US

States/Provinces:  AZ, MXSON?




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: GNR

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Fouquieria splendens - Calliandra eriophylla Shrubland (Schulz 2004)

Concept Author(s): K.A. Schulz (2004)

Author of Description: K.A. Schulz

Acknowledgements: No Data Available

Version Date: 08-21-07

  • Schulz, K. A. 2004. Vegetation classification of Buenos Aires National Wildlife Refuge, Arizona. Unpublished report submitted to USDI Fish and Wildlife Service. NatureServe, Western Regional Office, Boulder, CO.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.