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Acer rubrum - Fraxinus pennsylvanica / Packera aurea - Carex bromoides - Pilea fontana Swamp Forest | NatureServe Biotics 2019
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Name: Acer rubrum - Fraxinus pennsylvanica / Packera aurea - Carex bromoides - Pilea fontana Swamp Forest
Reference: NatureServe Biotics 2019
Description: This calcareous seepage swamp occurs on the Virginia Coastal Plain on groundwater-saturated stream bottoms in ravines that have cut into Tertiary shell deposits or limesands. Braided streams and hummock-and-hollow microtopography are characteristic of the environmental setting. Soils are highly calcareous with pH values up to 7.4 and calcium levels that range up to 6000 ppm. The tree canopy is consistently codominated by <i>Fraxinus pennsylvanica</i> and <i>Acer rubrum</i> with a few other species locally important. The shrub layer is typically open and contains <i>Lindera benzoin, Morella cerifera, Carpinus caroliniana</i>, and <i>Cornus foemina</i>. Vines are often abundant, especially <i>Decumaria barbara</i>. The herb layer is dense, lush, and clearly divisible into two relatively discrete assemblages that occupy hummocks and mucky hollows, respectively. The most constant patch-dominants of the relatively well-drained hummocks are <i>Packera aurea</i> and <i>Carex bromoides</i>. Characteristic patch-dominants of the wet, mucky hollows are <i>Pilea fontana, Bidens laevis, Saururus cernuus, Cicuta maculata var. maculata, Impatiens capensis</i>, and <i>Glyceria striata</i>. Other common or noteworthy herbs include <i>Caltha palustris, Thelypteris palustris var. pubescens, Carex granularis, Scirpus lineatus, Orontium aquaticum, Pedicularis lanceolata, Liparis loeselii</i>, and <i>Carex tetanica</i>. 
Accession Code: urn:lsid:vegbank.org:commConcept:35056-{5B6594B9-100B-47A0-B78D-5823D4A95932}
Plot-observations of this Community Concept: 20
      Party Perspective according to: NatureServe (organization)
Perspective from: 16-Feb-2007 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.687899 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL006413
  Translated: Red Maple - Green Ash / Golden Ragwort - Bromelike Sedge - Lesser Clearweed Swamp Forest
  Common: Coastal Plain Calcareous Seepage Swamp Forest
  Scientific: Acer rubrum - Fraxinus pennsylvanica / Packera aurea - Carex bromoides - Pilea fontana Swamp Forest
(convergence) and Synonyms:
(similar) Acer rubrum - Fraxinus pennsylvanica / Packera aurea - Carex bromoides - Pilea fontana - Bidens laevis Forest
(similar) CEGL006413
(similar) Acer rubrum - Fraxinus pennsylvanica / Bidens laevis - Pilea fontana Forest