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Ambrosia dumosa / Pleuraphis rigida Dwarf-shrubland | NatureServe Biotics 2019
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Name: Ambrosia dumosa / Pleuraphis rigida Dwarf-shrubland Reference: NatureServe Biotics 2019 Description: This is a sparse, desert sand dune association. It occurs on active to partially stabilized desert sand dunes in the northern Sonoran Desert and Mojave Desert, between 88 and 1300 m (290-4200 feet) of elevation. <i>Ambrosia dumosa</i> and <i>Pleuraphis rigida</i> codominate, though a number of other dune-adapted, shrubby perennial plants may occur. Occasionally common are <i>Ephedra trifurca, Croton californicus, Croton wigginsii, Eriogonum deserticola</i>, and <i>Psorothamnus emoryi</i>. Cover of shrubs and <i>Pleuraphis rigida</i> together varies from 5-20% depending on slope aspect and dune activity. Diagnostic species include <i>Abronia villosa var. villosa, Dicoria canescens</i> and the rare taxa <i>Chamaesyce platysperma, Croton wigginsii, Eriogonum deserticola, Helianthus niveus ssp. tephrodes, Palafoxia arida var. gigantea</i>, and <i>Psorothamnus emoryi</i>. Additional rare species that may be found include <i>Stephanomeria schottii, Pholisma sonorae</i> and <i>Triteleiopsis palmeri</i>. This association contains a high number of ephemeral forbs; in the Gran Desierto dunes, ephemerals comprise up to 63.5% of the flora. Ephemeral forbs include <i>Dimorphocarpa pinnatifida, Dicoria canescens, Lupinus arizonicus</i>, and <i>Oenothera deltoides</i>.  Accession Code: urn:lsid:vegbank.org:commConcept:29864-{78B94439-2976-4712-8E47-4188F3E4CCF7} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 23-Apr-2018 to: ongoing
	status: accepted Community's Parent: Pleuraphis rigida Desert Grassland Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.687442 NatureServe Explorer   Code: CEGL000955   Translated: Burrobush / Big Galleta Dwarf-shrubland   Scientific: Ambrosia dumosa / Pleuraphis rigida Dwarf-shrubland (convergence) and Synonyms: (similar) Ambrosia dumosa / Pleuraphis rigida Dwarf-shrubland (similar) CEGL000955 (similar) Ambrosia dumosa / Pleuraphis rigida Dwarf-shrubland