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Pleuraphis mutica - Sporobolus airoides - Panicum obtusum Semi-Desert Lowland Grassland Group | NatureServe Biotics 2019
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Name: Pleuraphis mutica - Sporobolus airoides - Panicum obtusum Semi-Desert Lowland Grassland Group
Reference: NatureServe Biotics 2019
Description: This is the common lowland grassland group that occurs in the northern Chihuahuan Desert, adjacent southwestern Great Plains, and Sky Islands west to the Sonoran Desert. Vegetation in this group is characterized by a moderately dense to dense graminoid layer of perennial grasses that is typically dominated by <i>Pleuraphis mutica</i> and/or <i>Sporobolus airoides</i> with <i>Panicum obtusum</i> often present. Dense stands can occur in mesic swales and depressions and along drainages, where <i>Sporobolus wrightii</i> and <i>Pleuraphis mutica</i> (tobosa swales) dominate, sometimes with other mesic graminoids such as <i>Pascopyrum smithii, Panicum hallii, Panicum hirsutum</i>, or <i>Panicum obtusum</i>. <i>Sporobolus airoides</i> is more common in alkaline soils. In degraded stands, <i>Scleropogon brevifolius</i> or <i>Aristida</i> spp. may codominate. <i>Bouteloua gracilis</i> or <i>Bouteloua dactyloides</i> may become important in northern stands transitioning into the Great Plains and on degraded stands. Scattered shrub or succulent species may be present, especially on degraded sites and along drainages and in depressions. Stands are found on alluvial flats, loamy plains and basins, sometimes extending up into lower piedmont slopes and on broad mesas. This group includes mesic grasslands that occur in relatively small depressions or swales and along drainages that receive runoff from adjacent areas. Occupying low topographic positions, these sites generally have deep, fine-textured soils that are neutral to slightly or moderately saline/alkaline. 
Accession Code: urn:lsid:vegbank.org:commConcept:40197-{2760572A-C3A3-411B-A430-3AAFF582A05F}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 05-Nov-2015 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.837734 NatureServe ExplorerNatureServe Explorer logo
  Code: G489
  Scientific: Pleuraphis mutica - Sporobolus airoides - Panicum obtusum Semi-Desert Lowland Grassland Group