Print Report

CEGL006534 Polypodium (virginianum, appalachianum) / Lichens Nonvascular Vegetation

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: (Rock Polypody, Appalachian Polypody) / Lichens Nonvascular Vegetation

Colloquial Name: Northern Lichen Talus Barrens

Hierarchy Level:  Association

Type Concept: This sparsely vegetated, open talus slope of the northern Appalachian Mountains region is characterized by large boulder talus dominated by lichen cover. Soil is confined to shallow accumulations in rock pockets, and higher plant growth is limited by both lack of nutrients and dry conditions. Little data are available on the dominant lichens, but they can include Umbilicaria spp., as well as other common foliose and crustose species. Vascular plants are a variable mix of scattered individuals of Picea rubens, Betula papyrifera var. cordifolia, Betula papyrifera var. papyrifera, Betula alleghaniensis, Acer spicatum, Sorbus americana and/or Sorbus decora, Polypodium virginianum, Polypodium appalachianum, Deschampsia flexuosa, and Parthenocissus quinquefolia. In more southern examples of this community, Betula populifolia, Tsuga canadensis, Ostrya virginiana, Juniperus virginiana, and Quercus rubra may be present. The community provides denning sites for small mammals and snakes.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This association displays some compositional variation north to south, and may be divisible into "boreal" versus "temperate" associations with additional study and documentation.

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: Little data are available on the dominant lichens, but they can include Umbilicaria spp., as well as other common foliose and crustose species. Vascular plants are a variable mix of scattered individuals of Picea rubens, Betula papyrifera var. cordifolia, Betula papyrifera var. papyrifera, Betula alleghaniensis, Acer spicatum, Sorbus americana and/or Sorbus decora, Polypodium virginianum, Polypodium appalachianum, Deschampsia flexuosa, and Parthenocissus quinquefolia. In more southern examples of this community, Betula populifolia, Tsuga canadensis, Ostrya virginiana, Juniperus virginiana, and Quercus rubra may be present.

Dynamics:  No Data Available

Environmental Description:  This sparsely vegetated, open talus slope of the northern Appalachian Mountains region is characterized by large boulder talus dominated by lichen cover. Soil is confined to shallow accumulations in rock pockets, and higher plant growth is limited by both lack of nutrients and dry conditions.

Geographic Range: This community is known from northern New England and adjacent Canada.

Nations: CA,US

States/Provinces:  ME, NB, NH, NS, NY, QC?, VT




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: GNR

Greasons: No Data Available


Concept Lineage: duplicate placeholder

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: No Data Available

Concept Author(s): Northern Appalachian Planning Team

Author of Description: Northern Appalachian Ecology Group (Anderson et al. 1997)

Acknowledgements: No Data Available

Version Date: 11-13-00

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  • Eastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boston, MA.
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  • Northern Appalachian Ecology Working Group. 2000. Northern Appalachian / Boreal Ecoregion community classification (Review Draft). The Nature Conservancy, Eastern Conservation Science Center, Boston, MA. 117 pp. plus appendices.
  • Sperduto, D. D., and W. F. Nichols. 2004. Natural communities of New Hampshire: A guide and classification. New Hampshire Natural Heritage Bureau, DRED Division of Forests and Lands, Concord. 242 pp.
  • Thompson, E. H., and E. R. Sorenson. 2005. Wetland, woodland, wildland: A guide to the natural communities of Vermont. The Nature Conservancy and the Vermont Department of Fish and Wildlife. University Press of New England, Hanover, NH. 456 pp.