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Quercus stellata / (Danthonia spicata, Croton willdenowii) Woodland | Midwestern Ecology Working Group...
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Name: Quercus stellata / (Danthonia spicata, Croton willdenowii) Woodland Reference: Midwestern Ecology Working Group... Description: This clay barrens community is found in the central United States in southwestern Indiana and adjacent Kentucky. Stands occur in areas with a dense, relatively impervious, argillic layer of soil at or just below the surface. This clay layer apparently impedes water percolation and subsoil recharge, resulting in droughty conditions. Plant roots may also have a difficult time penetrating the layer. It also causes temporary ponding (vernal pools) that persist long enough to influence the species composition. The best examples of this type occur in flats, where Quercus stellata is the dominant tree, and the barrens area range in size from 0.25-2 ha. Although the barrens occupy the highest elevational point in the stand, the trapped water forms pools that may contain Eleocharis tenuis var. verrucosa (= Eleocharis verrucosa), Carex annectens, Eleocharis wolfii, Ranunculus pusillus, and Isoetes melanopoda. In July, when the site is dry and the above species have faded away, Danthonia spicata and Schizachyrium scoparium dominate the ground layer. Small annuals, such as Diodia teres, Hypericum drummondii, Hypericum gentianoides, and Croton willdenowii, are abundant. Aristida ramosissima and Trichostema setaceum may also be abundant. A variety of other heliophytic species are present in the barrens, including Hypericum denticulatum, Krigia biflora, Liatris spicata, Dichanthelium depauperatum (= Panicum depauperatum), Polygala sanguinea, and Oligoneuron rigidum (= Solidago rigida).  Accession Code: VB.CC.25806.QUERCUSSTELLATA Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 17-Nov-2014
	status: accepted Community's Parent: Quercus stellata - Quercus marilandica Woodland Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: Post Oak / (Poverty Oatgrass, Broadleaf Rushfoil) Woodland   UID: ELEMENT_GLOBAL.2.689478 NatureServe Explorer   Code: CEGL005057   Scientific: Quercus stellata / (Danthonia spicata, Croton willdenowii) Woodland   Common: Post Oak Clay Barrens (convergence) and Synonyms: (undetermined) Quercus stellata / (Danthonia spicata, Croton willdenowii) Woodland