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Sporobolus cryptandrus Shrub Grassland | NatureServe Biotics 2019
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Name: Sporobolus cryptandrus Shrub Grassland
Reference: NatureServe Biotics 2019
Description: This late-seral association has a bimodal distribution, being recorded for both the northernmost portion of the Bighorn Basin Section (342A) in Montana and the lowest elevations of Hells Canyon within the Blue Mountains Section (M332) in Idaho. In the Hells Canyon vicinity it is associated with dry alluvial bars and stream terraces, whereas in Montana it has been described from a single, sandy-soil valley bottom location. <i>Sporobolus cryptandrus</i>, a mid-sized bunchgrass associated with sandy and most especially excessively drained soils, dominates the herbaceous layer (30-50% canopy cover) in mid- to late-seral (good condition) stands; its cover may be much reduced in early-seral (poor condition) stands as a result of livestock grazing. Beyond <i>Sporobolus cryptandrus</i> dominance, there is not much similarity in the vegetation composition between the Montana and Hells Canyon sites, though both locations do have low forb cover and diversity. Weedy species are present in both areas; <i>Halogeton glomeratus</i> in Montana, and annual bromes and <i>Hypericum perforatum</i> in Hells Canyon/Snake River sites. Hells Canyon sites also have a discontinuous bryophyte layer. ~<i>Sporobolus cryptandrus</i> Shrub Grassland (CEGL001514)$$ differs from ~<i>Sporobolus cryptandrus - Poa secunda</i> Grassland (CEGL001516)$$ and ~<i>Pseudoroegneria spicata - Poa secunda</i> Grassland (CEGL001677)$$ by lacking both <i>Poa secunda</i> and <i>Pseudoroegneria spicata</i>, and occurring only in canyon bottom sites, on terraces with excessively drained soils. 
Accession Code: urn:lsid:vegbank.org:commConcept:30423-{C4C260AA-6EB4-447A-B894-FD50650976AF}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.686294 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL001514
  Translated: Sand Dropseed Shrub Grassland
  Common: Sand Dropseed Shrub Prairie
  Scientific: Sporobolus cryptandrus Shrub Grassland
(convergence) and Synonyms:
(similar) CEGL001514
(similar) Sporobolus cryptandrus Shrub Herbaceous Vegetation
(similar) Sporobolus cryptandrus Shrub Herbaceous Vegetation