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Acer rubrum - Fraxinus pennsylvanica / Packera aurea - Carex bromoides - Pilea fontana - Bidens laevis Forest | Eastern Ecology Working Group of...
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Name: Acer rubrum - Fraxinus pennsylvanica / Packera aurea - Carex bromoides - Pilea fontana - Bidens laevis Forest Reference: Eastern Ecology Working Group of... 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 (= Myrica 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 (= Senecio aureus)</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: VB.CC.30957.CEGL006413 Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 17-Nov-2014 to: 01-May-2019
	status: accepted This Community's Level: association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.687899 NatureServe Explorer   Common: Coastal Plain Calcareous Seepage Swamp   Translated: Red Maple - Green Ash / Golden Ragwort - Bromelike Sedge - Lesser Clearweed - Smooth Beggarticks Forest   Scientific: Acer rubrum - Fraxinus pennsylvanica / Packera aurea - Carex bromoides - Pilea fontana - Bidens laevis Forest   Code: CEGL006413