Name:
Saccharum baldwinii - Calamagrostis coarctata - Panicum rigidulum - Rhynchospora capitellata Marsh
Reference:
NatureServe Biotics 2019
Description:
This association is found in depression ponds which have a pronounced seasonal fluctuation in water level, filling in the winter and often drying completely in the summer. It occurs as the upper/outer parts of a zonation sequence, dominated at least in part by the nominal species, found in upland depressions of the Interior Low Plateau (southeastern Highland Rim) of Tennessee, and the Cumberland Plateau of northern Alabama. In these situations, water is ponded by an impermeable fragipan in the substrate. <i>Saccharum baldwinii</i> may be present in patches; other taller stature species present may include <i>Calamagrostis coarctata</i> and <i>Andropogon virginicus</i>. Medium- to short-statured graminoids (which may form a more-or-less distinct zone in some cases) include <i>Panicum rigidulum var. rigidulum, Panicum verrucosum, Dichanthelium dichotomum, Juncus effusus, Carex bullata, Dichanthelium dichotomum, Rhynchospora glomerata</i>, and <i>Rhynchospora capitellata</i>. Additional herbs present may include <i>Ludwigia linearis, Juncus acuminatus, Juncus dichotomus, Juncus marginatus, Juncus scirpoides, Xyris torta, Rhexia mariana</i>, and <i>Lobelia canbyi</i>. The mosses <i>Polytrichum commune, Sphagnum</i> spp., and others are patch dominants. In one disturbed example, the dominant grasses are <i>Saccharum baldwinii</i> and <i>Dichanthelium dichotomum</i>; other grasses which are present here include <i>Chasmanthium laxum, Panicum anceps, Sorghastrum nutans, Calamagrostis coarctata, Aristida longespica, Schizachyrium scoparium, Dichanthelium scoparium</i>, and <i>Andropogon virginicus</i>. Forbs are less prominent but include <i>Symphyotrichum dumosum, Helianthus angustifolius</i>, and <i>Rhexia mariana</i>. <i>Smilax rotundifolia</i> is a common vine. Another disturbed, successional example is dominated by <i>Panicum rigidulum var. rigidulum</i> and <i>Hypericum drummondii</i>, with <i>Dichanthelium dichotomum var. dichotomum, Packera anonyma, Eryngium yuccifolium, Symphyotrichum dumosum, Liatris spicata, Liatris microcephala, Polytrichum commune, Coreopsis tripteris, Parthenium integrifolium, Agalinis</i> sp., <i>Symphyotrichum</i> spp., <i>Solidago</i> spp., and <i>Diodia teres</i>. Other species include <i>Eleocharis microcarpa, Juncus repens, Proserpinaca pectinata</i>, and/or <i>Proserpinaca intermedia</i>.
Accession Code:
urn:lsid:vegbank.org:commConcept:33528-{0B8E4C68-C318-4A71-8FC4-7D274EBBC276}
Plot-observations of this Community Concept:
0
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