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Diapensia lapponica Dwarf-shrubland | NatureServe Biotics 2019
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Name: Diapensia lapponica Dwarf-shrubland Reference: NatureServe Biotics 2019 Description: These alpine barrens are found on extremely exposed areas above treeline on the highest peaks of the northern Appalachian Mountains. They occur on relatively flat, windswept areas where snow cover is slight or absent, at elevations of 1220 to 1675 m (4000-5500 feet). The soils are minimally developed, well-drained gravels, where frost heaving and winter freezing is characteristic. Dwarf-shrub cushion plants are the dominant feature of the vegetation, which is often less than 10 cm high; herbs and lichens are sparse. Between the plants, the ground cover is bare gravel. The dominant shrub is <i>Diapensia lapponica</i> forming low domes. Associated shrubs, in compact mats, include <i>Vaccinium uliginosum</i> and <i>Empetrum nigrum</i>, and, at the higher elevations, <i>Rhododendron lapponicum, Loiseleuria procumbens</i>, and <i>Arctostaphylos alpina</i>. Herbs include <i>Juncus trifidus, Carex bigelowii, Solidago multiradiata, Minuartia groenlandica</i>, and <i>Agrostis mertensii</i>. This association is differentiated from co-occurring alpine vegetation (primarily ~<i>Vaccinium uliginosum - Rhododendron lapponicum / Juncus trifidus</i> Dwarf-shrubland (CEGL006298)$$) by the greater dominance of <i>Diapensia</i>, which in most cases has higher cover than any other shrub species.  Accession Code: urn:lsid:vegbank.org:commConcept:34968-{CBA03A63-3CA7-4B46-B53D-02C49F309011} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 28-Jan-2003 to: ongoing
	status: accepted Community's Parent: Diapensia lapponica - Mixed Alpine Dwarf-shrubland Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.685539 NatureServe Explorer   Code: CEGL006322   Translated: Pincushion Plant Dwarf-shrubland   Common: Windswept Alpine Ridge   Scientific: Diapensia lapponica Dwarf-shrubland (convergence) and Synonyms: (similar) CEGL006322 (similar) Diapensia lapponica Dwarf-shrubland (similar) Diapensia lapponica Dwarf-shrubland