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Comm #11521
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Andropogon gerardii - Panicum virgatum Sandhills Herbaceous Vegetation
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accession code: VB.CC.37058.CEGL002023
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Midwestern Ecology Working Group... |
0
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This big bluestem sandhills prairie community type occurs in the central Great Plains of the United States. Stands typically occur in interdunal valleys and floodplains of streams and rivers, and on level ground where drainage systems are poorly developed. Soils are somewhat poorly drained sandy loam or sands with organic matter (but no peat accumulation) and are formed in eolian sand or alluvium. Vegetation cover is dense and is primarily composed of tall mesophytic grasses, mostly <i>Andropogon gerardii</i> and <i>Sorghastrum nutans</i> in undisturbed sites, with <i>Agrostis stolonifera, Phleum pratense</i>, and <i>Poa pratensis</i> often replacing them in disturbed sites. Other common grasses include <i>Calamagrostis canadensis, Calamagrostis stricta, Elymus trachycaulus</i>, and <i>Panicum virgatum</i>. Typical forbs include <i>Helianthus nuttallii, Lotus unifoliolatus</i>, and <i>Rudbeckia hirta</i>. Thickets of shrubs, such as <i>Salix exigua</i>, are occasional. |
Comm #11522
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Andropogon gerardii - Panicum virgatum - Helianthus grosseserratus Herbaceous Vegetation
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accession code: VB.CC.37092.CEGL002024
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Midwestern Ecology Working Group... |
0
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This wet-mesic tallgrass prairie community is found widely throughout the central midwestern United States. Stands typically occur in narrow draws of headwaters of small streams, depressions of terraces (sometimes uplands), and on floodplains of larger streams and rivers. The loamy soils are somewhat poorly drained and deep (100 cm or more). Standing surface water may be present for short periods in the winter and spring or after heavy rains. Fire was common in this community. There is a single layer of dominant graminoids intermixed with abundant forbs. <i>Andropogon gerardii</i> and <i>Spartina pectinata</i> can exceed 2 m in height in this wet-mesic community. <i>Panicum virgatum</i> is usually somewhat shorter but still greater than 1 m tall. Other typical plants found in this community in Missouri are <i>Juncus interior, Tripsacum dactyloides, Helianthus grosseserratus, Potentilla simplex, Eryngium yuccifolium</i>, and <i>Carex bicknellii</i>. <i>Calamagrostis canadensis</i> is more common northward. Species diversity does not tend to be as high as in more mesic grassland communities. Woody species can become more abundant in the absence of fire. |
Comm #11523
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Spartina pectinata - Calamagrostis stricta - Carex spp. Herbaceous Vegetation
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accession code: VB.CC.36767.CEGL002027
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Midwestern Ecology Working Group... |
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This prairie cordgrass wet prairie community occurs in the northern tallgrass prairie region of the United States and Canada. Stands occur in many shallow pond basins and lakes, as well as on terraces and floodplains of streams and rivers. The soils are deep, typically poorly drained, with clay or silty loam upper horizons that have a characteristic gley layer. The community is subject to seasonal inundation. The vegetation is dominated by fine-textured grasses, low sedges, and rushes, with a mixture of forbs. The most common species are <i>Symphyotrichum lanceolatum var. lanceolatum (= Aster lanceolatus var. lanceolatus), Boltonia asteroides var. latisquama, Calamagrostis canadensis, Carex pellita (= Carex lanuginosa), Carex praegracilis, Carex sartwellii, Carex stricta, Poa palustris</i>, and <i>Spartina pectinata</i>. Other species that are often present are <i>Apocynum cannabinum, Juncus balticus, Liatris pycnostachya, Sonchus arvensis, Stachys palustris</i>, and <i>Teucrium canadense</i>. |
Comm #11524
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Pinus palustris - (Pinus elliottii) Forest Alliance
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accession code: VB.CC.28464.PINUSPALUSTRISP
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Southeastern Ecology Working Gro... |
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This alliance accommodates flatwoods and other mesic Coastal Plain environments dominated by mixtures of Pinus palustris and Pinus elliottii var. elliottii. This includes a variety of situations, for example dense, fire-suppressed Pinus elliottii var. elliottii plantations and old-field stands, on former Pinus palustris sites, with a remnant semi-natural ground layer; in addition to other silviculturally manipulated stands, such as forests resulting from planting or regeneration of Pinus elliottii var. elliottii from seed trees. Examples of this alliance are generally silviculturally managed, so some examples at particular times may exhibit canopy coverage below the 60% cover limit for a forest, but all examples are conceptually included here. Burning frequencies for management purposes are generally increased in older stands (greater than 15 years of age). Examples of this alliance in the West Gulf Coastal Plain include stands which are old plantations planted outside the natural range of Pinus elliottii var. elliottii, sometimes on former Pinus palustris sites. In this region, the local expression of this alliance depends on soil conditions. In mesic to dry-mesic uplands, the canopy may range from nearly pure Pinus elliottii (possibly with some Pinus taeda ingrowth) to a mixed canopy containing Pinus elliottii var. elliottii and Pinus palustris in combination. In the former case, soils are generally acidic silt loams and sandy loams; in the latter case they tend to be well-drained to moderately well-drained fine sandy loams and sands underlain by clay. The understory and herbaceous strata vary depending on management, site conditions, and canopy coverage; the tall-shrub stratum ranges from fairly dense to sparse, and may be patchy. In the Inner Coastal Plain of South Carolina (Savannah River Site), mature upland plantations in this alliance tend to develop an understory including Nyssa sylvatica and an herbaceous stratum dominated by Rubus argutus. In contrast, burned examples tend to have Prunus serotina var. serotina in the understory and Andropogon virginicus in the herbaceous layer. |
Comm #11525
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Schoenoplectus acutus - Typha latifolia - (Schoenoplectus tabernaemontani) Sandhills Herbaceous Vegetation
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accession code: VB.CC.36683.CEGL002030
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Midwestern Ecology Working Group... |
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This community is found in the central Great Plains of the United States in floodplains or interdunal valleys. The soils are deep, poorly-drained sands or sandy loams that are rich in organic matter (muck or peat) and formed in eolian sand or alluvium. These sites are flooded for most of the growing season by water several centimeters to about 1 m deep. The water is usually slightly alkaline. The vegetation of this community varies in response to water depth, chemistry, turbidity, and temperature. The most abundant species in the more permanently flooded zone are tall hydrophytic graminoids, such as <i>Schoenoplectus acutus (= Scirpus acutus), Schoenoplectus tabernaemontani (= Scirpus tabernaemontani)</i> and <i>Typha latifolia</i>. <i>Sagittaria latifolia</i> is a common forb often present in openings among the dominants and in deeper water at the margin of the community. Submersed species present include <i>Ceratophyllum demersum, Lemna trisulca, Potamogeton</i> spp., and <i>Zannichellia palustris</i>. In more seasonally flooded portions of the marsh <i>Phragmites australis</i> may dominate and exclude other species. |
Comm #11526
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CEGL005121
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accession code: VB.CC.6474.CEGL005121
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
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Comm #11527
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I.C.1.N.a
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accession code: VB.CC.748.IC1NA
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EcoArt 2002 |
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Comm #11528
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I.A.4.N.d
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accession code: VB.CC.401.IA4ND
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EcoArt 2002 |
0
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Comm #11529
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Schizachyrium scoparium - Bouteloua curtipendula - Bouteloua hirsuta - (Yucca glauca) Herbaceous Vegetation
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accession code: VB.CC.36706.CEGL002035
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Midwestern Ecology Working Group... |
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This bluestem - grama grass dry prairie type is found on the loess bluffs along the east side of Missouri River in the central midwestern United States. The soil is somewhat rapidly drained and very shallow (0-40 cm). The vegetative structure is composed of a single layer of dominant grasses intermixed with forbs. Shrubs, especially <i>Yucca glauca</i>, are sometimes present. This community is a short to midgrass prairie dominated by the bunchgrasses <i>Andropogon gerardii, Bouteloua curtipendula</i>, and <i>Schizachyrium scoparium</i>. <i>Bouteloua hirsuta</i> can be common. <i>Sporobolus cryptandrus, Dalea leporina, Dalea candida, Dalea enneandra, Astragalus lotiflorus</i>, and <i>Astragalus missouriensis</i> can also be common. Other herbaceous species include <i>Pulsatilla patens ssp. multifida (= Anemone patens), Symphyotrichum sericeum (= Aster sericeus), Buchloe dactyloides, Bouteloua gracilis, Delphinium carolinianum, Gaura coccinea</i>, and <i>Pediomelum argophyllum</i>, and the lichens <i>Placidium lachneum (= Dermatocarpon lachneum)</i> and <i>Psora decipiens</i>. |
Comm #11530
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CEGL002220
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accession code: VB.CC.4738.CEGL002220
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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