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Hudsonia tomentosa / Paronychia argyrocoma Riverscour Alliance | NatureServe Biotics 2019
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Name: Hudsonia tomentosa / Paronychia argyrocoma Riverscour Alliance
Reference: NatureServe Biotics 2019
Description: This alliance comprises a single association occurring on a stretch of the Saco River between New Hampshire and Maine. It is unusual in that the major process structuring this vegetation is irregular alluvial flooding as opposed the to wind-driven sand deposition that drives nearly all other known vegetation dominated by <i>Hudsonia tomentosa</i>. The Saco River originates in the White Mountains and flows through thick sand and gravel, which is deposited on point bars during early spring floods. The sand deposits are often extensive, resulting in some secondary eolian dune formation. As a result, the community is highly unusual in its species composition, supporting species of coastal sands such as <i>Lechea maritima</i> and <i>Polygonella articulata</i>, species typical of the cooler climates of the White Mountains, such as <i>Solidago simplex var. randii</i> and <i>Paronychia argyrocoma</i>, and species characteristic of grasslands such as <i>Andropogon gerardii, Schizachyrium scoparium, Danthonia spicata, Solidago nemoralis</i>, and species of <i>Panicum</i>. 
Accession Code: urn:lsid:vegbank.org:commConcept:38162-{EA0ED737-27FF-4F3B-8F70-AD92802238BD}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 18-Dec-2014 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.899071 NatureServe ExplorerNatureServe Explorer logo
  Code: A1087
  Translated: Woolly Beach-heather / Silvery Nailwort Riverscour Alliance
  Common: Beach-heather Riverscour
  Scientific: Hudsonia tomentosa / Paronychia argyrocoma Riverscour Alliance
(convergence) and Synonyms:
(similar) A.1087
(similar) Hudsonia tomentosa Temporarily Flooded Dwarf-shrubland Alliance