Print Report

CEGL006392 Myrica gale - Chamaedaphne calyculata / Carex exilis Fen

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Myrica gale - Chamaedaphne calyculata / Coastal Sedge Fen

Colloquial Name: Coastal Plain Sedge Fen

Hierarchy Level:  Association

Type Concept: This Coastal Plain poor fen is currently known from the northeastern United States. This weakly minerotrophic peatland overlies sand and gravel deposits. Sedges are dominant and commonly overtop the dwarf-shrub layer, which can be patchy and scattered. The dwarf-shrub layer is dominated by Myrica gale and Chamaedaphne calyculata plus Vaccinium macrocarpon, Gaylussacia dumosa, Spiraea alba var. latifolia, Spiraea tomentosa, and sometimes Alnus incana ssp. rugosa or Decodon verticillatus. The herbaceous layer is very well-developed and dominated by sedges, including Carex exilis, Carex bullata, Carex lasiocarpa, Carex rostrata, Carex striata, Cladium mariscoides, Rhynchospora alba, Rhynchospora capitellata, Rhynchospora fusca, Eriophorum virginicum, and occasionally Scirpus longii. Additional herbs include Juncus canadensis, Juncus pelocarpus, Drosera intermedia, Drosera rotundifolia, Triadenum virginicum, Utricularia gibba, Utricularia purpurea, Pogonia ophioglossoides, Calopogon tuberosus, Sarracenia purpurea, and Eleocharis tuberculosa. Sphagnum mosses are abundant including Sphagnum bartlettianum, Sphagnum fallax, Sphagnum flavicomans, Sphagnum magellanicum, Sphagnum recurvum, Sphagnum papillosum, Sphagnum torreyanum, and Sphagnum henryense. Scattered, stunted trees, especially Chamaecyparis thyoides and Acer rubrum, may be present. Key diagnostic features are the presence of Coastal Plain indicators amidst acidic fen vegetation, such as Carex exilis, Carex striata, Sphagnum torreyanum, and Gaylussacia dumosa.

In New Jersey, this vegetation occurs adjacent to a freshwater tidal marsh. Characteristic species include a short-shrub layer dominated by Chamaedaphne calyculata, Chamaecyparis thyoides (dwarf), Morella pensylvanica, and Spiraea tomentosa. The herbaceous layer is diverse and characterized by Rhynchospora alba, Rhynchospora capitellata, Rhynchospora chalarocephala, Rhynchospora gracilenta, Juncus canadensis, Juncus pelocarpus, Eleocharis tuberculosa, Xyris difformis, Xyris torta, Andropogon glomeratus, Andropogon virginicus, Schizachyrium scoparium, Dulichium arundinaceum, Glyceria obtusa, Drosera intermedia, Drosera rotundifolia, Viola lanceolata, Viola x primulifolia, Sarracenia purpurea, Symphyotrichum novi-belgii, Iris prismatica, Euthamia caroliniana, Eupatorium pilosum, Triadenum virginicum, Linum striatum, Lobelia nuttallii, Rhexia mariana, Sagittaria calycina var. spongiosa, Utricularia gibba, Utricularia geminiscapa, Calopogon tuberosus, Pogonia ophioglossoides, Spiranthes odorata, Lycopodiella appressa, Lycopodiella alopecuroides, and a nonvascular layer dominated by Sphagnum magellanicum and Sphagnum angermanicum.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: No Data Available

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

Physiognomy and Structure: No Data Available

Floristics: Sedges are dominant and commonly overtop the dwarf-shrub layer, which can be patchy and scattered. The dwarf-shrub layer is dominated by Myrica gale and Chamaedaphne calyculata plus Vaccinium macrocarpon, Gaylussacia dumosa, Spiraea alba var. latifolia (= Spiraea latifolia), Spiraea tomentosa, and sometimes Alnus incana ssp. rugosa or Decodon verticillatus. The herbaceous layer is very well-developed and dominated by sedges, including Carex exilis, Carex bullata, Carex lasiocarpa, Carex rostrata, Carex striata, Cladium mariscoides, Rhynchospora alba, Rhynchospora capitellata, Rhynchospora fusca, Eriophorum virginicum, and occasionally Scirpus longii. Additional herbs include Juncus canadensis, Juncus pelocarpus, Drosera intermedia, Drosera rotundifolia, Triadenum virginicum, Utricularia gibba (= Utricularia fibrosa), Utricularia purpurea, Pogonia ophioglossoides, Calopogon tuberosus, Sarracenia purpurea, and Eleocharis tuberculosa. Sphagnum mosses are abundant including Sphagnum bartlettianum, Sphagnum fallax, Sphagnum flavicomans, Sphagnum magellanicum, Sphagnum recurvum, Sphagnum papillosum, Sphagnum torreyanum, and Sphagnum henryense. Scattered, stunted trees, especially Chamaecyparis thyoides and Acer rubrum, may be present. Key diagnostic features are the presence of Coastal Plain indicators amidst acidic fen vegetation, such as Carex exilis, Carex striata, Sphagnum torreyanum, and Gaylussacia dumosa.

Dynamics:  No Data Available

Environmental Description:  This weakly minerotrophic peatland overlies sand and gravel deposits.

Geographic Range: This poor fen is known currently from southern Rhode Island, Connecticut, and New York.

Nations: CA?,US

States/Provinces:  CT, NJ, NY, QC?, RI




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: GNR

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Cladium mariscoides - Carex exilis community (Metzler and Barrett 2006)

Concept Author(s): L.A. Sneddon

Author of Description: S.L. Neid

Acknowledgements: No Data Available

Version Date: 03-21-03

  • CDPNQ [Centre de données sur le patrimoine naturel du Québec]. No date. Unpublished data. Centre de données sur le patrimoine naturel du Québec, Québec.
  • Eastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boston, MA.
  • Edinger, G. J., D. J. Evans, S. Gebauer, T. G. Howard, D. M. Hunt, and A. M. Olivero, editors. 2014a. Ecological communities of New York state. Second edition. A revised and expanded edition of Carol Reschke''s ecological communities of New York state. New York Natural Heritage Program, New York State Department of Environmental Conservation, Albany, NY.
  • Enser, R. W., and J. A. Lundgren. 2006. Natural communities of Rhode Island. A joint project of the Rhode Island Department of Environmental Management Natural Heritage Program and The Nature Conservancy of Rhode Island. Rhode Island Natural History Survey, Kingston. 40 pp. [www.rinhs.org]
  • Metzler, K., and J. Barrett. 2006. The vegetation of Connecticut: A preliminary classification. State Geological and Natural History Survey, Report of Investigations No. 12. Connecticut Natural Diversity Database, Hartford, CT.