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Typha latifolia - Caltha palustris Marsh | NatureServe Biotics 2019
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Name: Typha latifolia - Caltha palustris Marsh Reference: NatureServe Biotics 2019 Description: This community is a tall herbaceous wetland of calcareous, groundwater-saturated sloughs, abandoned meanders, depressions, and toeslope spring overflows on large stream or river floodplain terraces in carbonate rock districts of the Ridge and Valley region. Soils typically have a surface horizon of organic muck (about 10 cm), or occasionally fibric peat, below which is a deep, gleyed or reduced clay with some organic matter. Soil samples collected from plots are slightly acidic to moderately alkaline, with very high calcium, magnesium, and total base saturation levels. Sites are more-or-less permanently saturated or flooded by perched groundwater or seepage inputs. The vegetation resembles a stratified, tall marsh and is usually dominated by <i>Typha latifolia</i> and <i>Caltha palustris</i>. More locally, <i>Acorus americanus</i> and <i>Menyanthes trifoliata</i> are dominant or codominant in stands. Other characteristic species include <i>Carex emoryi, Impatiens capensis, Leersia virginica, Lysimachia terrestris, Peltandra virginica, Carex tetanica, Sagittaria latifolia, Schoenoplectus tabernaemontani</i>, and <i>Scirpus atrovirens</i>. In the absence of active disturbance regimes, habitats supporting this community appear susceptible to invasion by <i>Salix</i> spp. and other woody swamp plants. The ecological dynamics of this very rare vegetation type are poorly understood. Although it may have originated from some form of disturbance, its restriction to two very unusual wetland habitats located miles apart, as well as the lack of invasive introduced species in its composition, suggests that the type is natural.  Accession Code: urn:lsid:vegbank.org:commConcept:34892-{8351B129-17D0-4F06-B552-21CDEAFC394D} Plot-observations of this Community Concept: 5
	Party Perspective according to: NatureServe (organization) Perspective from: 25-Jan-2005 to: ongoing
	status: accepted Community's Parent: Typha angustifolia - Typha latifolia - Schoenoplectus spp. Deep Marsh Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.758652 NatureServe Explorer   Code: CEGL006245   Translated: Broadleaf Cattail - Yellow Marsh-marigold Marsh   Common: Virginia Ridge and Valley Calcareous Marsh   Scientific: Typha latifolia - Caltha palustris Marsh (convergence) and Synonyms: (similar) Typha latifolia - Caltha palustris Herbaceous Vegetation