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CEGL004387 Umbilicaria mammulata Cliff Vegetation

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Plated Rocktripe Lichen Cliff Vegetation

Colloquial Name: Montane Cliff (Common Rocktripe Type)

Hierarchy Level:  Association

Type Concept: Vegetation is strongly dominated by Umbilicaria mammulata, on relatively moist, shaded rock outcrops, often on slopes with northerly aspects. This vegetation occurs where periodic seepage occurs on acidic rock outcrops. Individual occurrences can be as large as an acre. Vascular plants are generally sparse or absent, though trees or shrubs of adjacent forest communities often shade the outcrop community for much of the day. Other umbilicate lichens, shade-tolerant foliose lichens such as Flavoparmelia baltimorensis, and numerous crustose lichens may also occur. Associates include scattered individuals of Dryopteris intermedia and Polypodium appalachianum.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: Potentially very widespread in Southeast and beyond.

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

Physiognomy and Structure: No Data Available

Floristics: The vegetation is strongly dominated by Umbilicaria mammulata. Vascular plants are generally sparse or absent, though trees and shrubs of adjacent forest communities often shade the outcrop community for much of the day. Other umbilicate lichens, shade-tolerant foliose lichens such as Flavoparmelia baltimorensis, and numerous crustose lichens (e.g., Lepraria neglecta) may also occur. Associates include scattered individuals of Dryopteris intermedia and Polypodium appalachianum. Associated mosses include Andreaea rothii, Leucobryum albidum, and Rhabdoweisia crispata.

Dynamics:  No Data Available

Environmental Description:  This lichen-dominated community occurs on relatively moist, shaded, acidic rock outcrops (bedrock cliffs and vertical surfaces of large exfoliated boulders) where periodic seepage occurs. It is often found on slopes with northerly aspects. Individual occurrences can be as large as an acre.

Geographic Range: No Data Available

Nations: US

States/Provinces:  CT, GA, KY, NC, PA, SC, TN, VA, WV




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: G4?

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: ? IE2a. Southern Appalachian Acidic Cliff (Allard 1990)
? Lichen-dominated shaded outcrops (CAP pers. comm. 1998)
? SNE acidic cliff community (Rawinski 1984a)

Concept Author(s): A.S. Weakley

Author of Description: A.S. Weakley and G.P. Fleming

Acknowledgements: No Data Available

Version Date: 04-02-10

  • Allard, D. J. 1990. Southeastern United States ecological community classification. Interim report, Version 1.2. The Nature Conservancy, Southeast Regional Office, Chapel Hill, NC. 96 pp.
  • CAP [Central Appalachian Forest Working Group]. 1998. Central Appalachian Working group discussions. The Nature Conservancy, Boston, MA.
  • Fike, J. 1999. Terrestrial and palustrine plant communities of Pennsylvania. Pennsylvania Natural Diversity Inventory. Pennsylvania Department of Conservation and Recreation, Bureau of Forestry, Harrisburg, PA. 86 pp.
  • Fleming, G. P., K. D. Patterson, and K. Taverna. 2017. The natural communities of Virginia: A classification of ecological community groups and community types. Third approximation. Version 3.0. Virginia Department of Conservation and Recreation, Division of Natural Heritage, Richmond, VA. [http://www.dcr.virginia.gov/natural-heritage/natural-communities/]
  • Metzler, K. J., J. P. Barrett, T. E. Nosal, W. A. Millinor, and L. A. Sneddon. 2009. Vegetation classification and mapping at Weir Farm National Historic Site, Connecticut. Technical Report NPS/NER/NRTR--2008/130. National Park Service, Philadelphia, PA. 128 pp.
  • Nelson, J. B. 1986. The natural communities of South Carolina: Initial classification and description. South Carolina Wildlife and Marine Resources Department, Division of Wildlife and Freshwater Fisheries, Columbia, SC. 55 pp.
  • Rawinski, T. 1984a. Natural community description abstract - southern New England calcareous seepage swamp. Unpublished report. The Nature Conservancy, Boston, MA. 6 pp.
  • Schafale, M. P. 2012. Classification of the natural communities of North Carolina, 4th Approximation. North Carolina Department of Environment, Health, and Natural Resources, Division of Parks and Recreation, Natural Heritage Program, Raleigh.
  • Schafale, M. P., and A. S. Weakley. 1990. Classification of the natural communities of North Carolina. Third approximation. North Carolina Department of Environment, Health, and Natural Resources, Division of Parks and Recreation, Natural Heritage Program, Raleigh. 325 pp.
  • Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.
  • Vanderhorst, J. P., B. P. Streets, Z. Arcaro, and S. C. Gawler. 2010. Vegetation classification and mapping at Gauley River National Recreation Area. Technical Report NPS/NER/NRTR--2010/148. National Park Service, Philadelphia, PA.
  • Vanderhorst, J. P., J. Jeuck, and S. C. Gawler. 2007. Vegetation classification and mapping of New River Gorge National River, West Virginia. Technical Report NPS/NER/NRTR-2007/092. National Park Service, Philadelphia, PA. 396 pp.
  • White, R. D., Jr. 2006. Vascular plant inventory and ecological community classification for Cumberland Gap National Historical Park. NatureServe, Durham, NC. 246 pp.
  • Young, J., G. Fleming, W. Cass, and C. Lea. 2009. Vegetation of Shenandoah National Park in relation to environmental gradients, Version 2.0. Technical Report NPS/NER/NRTR--2009/142. National Park Service, Philadelphia, PA. 389 pp.