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Hymenoclea monogyra Shrubland Alliance | Western Ecology Working Group of...
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Name: Hymenoclea monogyra Shrubland Alliance
Reference: Western Ecology Working Group of...
Description: Shrublands in this southwestern alliance occur along drainages that dissect bajadas and mesas in the Chihuahuan and Sonoran deserts. Elevations range from 640-1030 m. Stands are restricted by the arid climate to arroyo riparian zones and adjacent floodplains. The alluvial soils are generally sandy often with cobbles and boulders. These shrublands utilize moisture from the water table and are dependent on the intermittent flows and flooding of the channel to supplement soil moisture and maintain the groundwater levels. The sparse to moderately dense shrub layer is dominated by Hymenoclea monogyra usually with significant densities of Baccharis sarothroides. Ambrosia ambrosioides is also typically present in lesser amounts. Less frequent or abundant shrubs include Acacia greggii, Parkinsonia microphylla, Celtis pallida, Eriogonum fasciculatum, Olneya tesota, and Prosopis velutina. The herbaceous layer is typically sparse. Two common herbs are Mentzelia pumila and Polanisia dodecandra ssp. trachysperma (= Polanisia trachysperma). Adjacent vegetation includes stands of Prosopis spp. bosques or desertscrub dominated by Larrea tridentata or Prosopis spp. 
Accession Code: VB.CC.21659.HYMENOCLEAMONOG
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: 01-May-2019
     
  • status: accepted
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: Hymenoclea monogyra Shrubland Alliance
  Translated: Single-whorl Cheesebush Shrubland Alliance
  UID: HIGHER_CLASS_UNIT.2.126083 NatureServe ExplorerNatureServe Explorer logo
  Code: A.1034