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Add/Drop	Name	Reference	Plots↓	Description
Comm #581	Quercus havardii Shrubland Alliance » more details accession code: VB.cc.30816.QUERCUSHAVARDII	NVC 2004	33
Comm #582	Quercus wislizeni / Toxicodendron diversilobum Association » more details accession code: urn:lsid:vegbank.org/vegbranch:commConcept:28843-{730BC2EE-2637-4E9E-9925-DED68FBFD2D0} NOT CURRENTLY ACCEPTED	MCV2	33
Comm #583	AMELANCHIER ALNIFOLIA ALLIANCE » more details accession code: VB.CC.8362.AMELANCHIERALNI	Jennings 2003. Vegetation alliances: composition and function.	33
Comm #584	Adenostoma fasciculatum - Ceanothus cuneatus Sierran Chaparral Shrubland » more details accession code: urn:lsid:vegbank.org:commConcept:32350-{AFD1E4D4-8434-406B-8431-DFF603C6CDE6}	NatureServe Biotics 2019	33	This chaparral shrubland is known from central and southern California Coast Ranges and the Sierra Nevada foothills, including Yosemite National Park. It occurs between 243 and 1364 m (797-4474 feet) elevation on middle to upper slopes that are gentle to steep. Soils may be clay, clay loam, silt or silt loam, but most sampled plots were located on sandy loam. <i>Adenostoma fasciculatum</i> and <i>Ceanothus cuneatus</i> codominate. Other shrubs can be present and include <i>Cercocarpus montanus var. glaber</i> and <i>Arctostaphylos pungens</i>. A variety of native and non-native herbs occupy the understory, such as <i>Marah fabaceus, Aira caryophyllea, Hypochaeris glabra, Bromus rubens</i>, and <i>Vulpia myuros</i>.
Comm #585	Populus fremontii - Salix gooddingii Riparian Woodland » more details accession code: urn:lsid:vegbank.org:commConcept:29853-{9AC9DE49-772E-47DF-B115-08C81A0CDA38}	NatureServe Biotics 2019	33	This riparian woodland community occurs from the Trans-Pecos region of western Texas to the Mojave Desert in southeastern California and southern Nevada, north into the Colorado Plateau in western Colorado and southern Utah. <i>Populus fremontii</i> and <i>Salix gooddingii</i> may be nearly equal in abundance, or either may dominate. The understories of most examples have been considerably altered by grazing and other factors, thus the shrub layer is generally lacking. A large variety of shrub and tree saplings may be present; however, these do not form a true shrub layer. An herbaceous layer is often present and dominated by a mix of annuals and short-lived perennials. This association is dependent upon a subsurface water supply which varies considerably throughout the growing season. Major flood events and consequent flood scour, overbank deposition of water and sediments, and stream meandering are important factors that shape this community. Soils are typically stratified sands, loams, and gravels. This deciduous woodland typically towers above the surrounding vegetation.
Comm #586	Carex torta Riverbed Vegetation » more details accession code: urn:lsid:vegbank.org:commConcept:32949-{C0550E5B-A7BF-45B1-B5EC-DAEE39467EA2}	NatureServe Biotics 2019	33	This association accommodates herbaceous alluvial wetlands in which <i>Carex torta</i> is a dominant or characteristic species. It occupies sand, gravel, and rock bars along small rivers and streams in valleys and gorges in the Southern Appalachians, ranging west into the Cumberland Plateau and the Interior Low Plateau, and north into the Central Appalachians, Allegheny Mountains, and Piedmont. This association is characterized by light-requiring, tough-rooted herbaceous perennials tolerant of frequent inundation and flood-scouring. <i>Carex torta</i> often forms dense, extensive colonies. Associated species vary with geography but can include <i>Polygonum sagittatum, Dichanthelium clandestinum, Solidago rugosa ssp. aspera, Juncus effusus, Equisetum arvense, Onoclea sensibilis, Vernonia noveboracensis, Lycopus virginicus, Lobelia cardinalis, Symphyotrichum dumosum, Lycopus virginicus, Osmunda regalis, Hypericum mutilum, Eutrochium fistulosum, Solidago patula, Boehmeria cylindrica, Amphicarpaea bracteata, Acalypha rhomboidea, Impatiens capensis, Leersia oryzoides</i>, and <i>Symphyotrichum lateriflorum</i>. Physiognomy of this type varies from strictly herbaceous to wooded herbaceous to shrubby. Scattered shrubs and small, battered specimens of <i>Platanus occidentalis, Betula nigra, Cornus amomum, Alnus serrulata</i>, and <i>Carpinus caroliniana</i> are present in some stands. An overhanging canopy may include <i>Platanus occidentalis, Betula alleghaniensis var. alleghaniensis</i>, or <i>Acer rubrum</i>. Overhanging shrubs often include <i>Rhododendron maximum</i>. Stands in disturbed landscapes may be heavily invaded by <i>Microstegium vimineum, Polygonum cespitosum var. longisetum</i>, and other weedy exotics.
Comm #587	Aristida beyrichiana - Rhynchospora oligantha - Panicum nudicaule - (Eurybia eryngiifolia) Seepage Meadow » more details accession code: urn:lsid:vegbank.org:commConcept:32999-{5CBB4B3C-B80E-4588-A8C5-D97854D4A9C8}	NatureServe Biotics 2019	33	This association occurs in the western Florida Panhandle and adjacent Alabama. It occurs in a hilly landscape, typically associated with seepage on slopes where clay or hardpan is close to the surface; it is characterized by <i>Aristida beyrichiana, Rhynchospora oligantha, Panicum nudicaule, Eurybia eryngiifolia</i> (rare or absent in Alabama examples), <i>Rhynchospora macra, Carphephorus pseudoliatris, Pleea tenuifolia, Eriocaulon decangulare, Ctenium aromaticum, Rhexia alifanus, Aletris aurea, Sarracenia psittacina, Sarracenia flava, Sarracenia leucophylla</i> (rarely), <i>Andropogon arctatus, Aristida purpurascens, Aristida palustris, Lachnocaulon digynum, Liatris spicata, Balduina uniflora, Polygala ramosa, Polygala</i> spp., <i>Xyris ambigua, Platanthera integra</i>, and others. Other typical species include <i>Andropogon glomeratus, Aristida palustris, Arundinaria tecta, Bidens mitis, Bigelowia nudata ssp. nudata, Coreopsis linifolia, Fuirena squarrosa, Helianthus heterophyllus, Hypericum brachyphyllum, Ilex glabra, Liatris spicata, Lophiola aurea, Lycopodiella</i> spp., <i>Magnolia virginiana, Morella caroliniensis, Nyssa biflora, Oxypolis filiformis, Rhexia lutea, Rhexia petiolata, Rhynchospora chalarocephala, Rhynchospora plumosa, Schizachyrium scoparium, Scleria muehlenbergii, Smilax laurifolia, Triantha racemosa, Xyris baldwiniana, Xyris stricta</i>, and <i>Zigadenus glaberrimus</i>.
Comm #588	Fagus grandifolia - Quercus alba / Kalmia latifolia - (Rhododendron catawbiense) / Galax urceolata Forest » more details accession code: urn:lsid:vegbank.org:commConcept:33324-{7FD45324-B1C4-4E24-B6F1-0C3C3E073ADD}	NatureServe Biotics 2019	33	This association includes heath bluffs on steep north-facing slopes in the lower Piedmont and Inner Coastal Plain of Virginia, the Carolinas, and other southeastern states. Disjunct examples of this type are found in northern Alabama and may also occur in Georgia. Generally, these communities occur in areas of thin and rocky soils but may also occur in areas of soft material exposed by undercutting by a stream. These sites experience a combination of dry conditions caused by shallow, well-drained soils and cool, moist microclimates caused by northern aspects. Sites may be heterogeneous with dry microsites intermixed with wet seepage areas. These communities are dominated by a dense shrub layer of <i>Kalmia latifolia</i> (most common), <i>Rhododendron catawbiense</i> or <i>Rhododendron maximum</i>. Other shrubs may include <i>Hamamelis virginiana, Symplocos tinctoria</i>, and <i>Vaccinium</i> spp. The tree canopy is open to very sparse, with trees such as <i>Fagus grandifolia, Quercus alba, Quercus montana, Pinus virginiana, Pinus taeda, Oxydendrum arboreum, Acer rubrum</i>, and <i>Amelanchier arborea</i> characteristic. A variety of trees from surrounding areas may also be present. Herbs are generally sparse under the shrubs, with acid-loving species, such as <i>Galax urceolata, Epigaea repens, Gaultheria procumbens, Chimaphila maculata, Hexastylis minor</i>, and <i>Mitchella repens</i>, typical. These communities generally border a floodplain forest or a stream channel and may grade to such communities through a talus slope at the base. These communities are distinguished by having an open tree canopy and closed, often dense, shrub layer. There is little open substrate for rock outcrop or weedy species.
Comm #589	Quercus montana - Quercus (alba, coccinea) / Viburnum acerifolium - (Kalmia latifolia) Forest » more details accession code: urn:lsid:vegbank.org:commConcept:33791-{45F084F0-93D3-4467-800A-37AFE3BF77D4}	NatureServe Biotics 2019	33	This chestnut oak - mixed oak forest community is found in the Allegheny Plateau region of Ohio, Pennsylvania and West Virginia. Stands occur on dry to subxeric upper slopes and narrow ridgetops. Soils are shallow and occur over non-calcareous bedrock of sandstone, conglomerate, or shale. Tree species commonly include <i>Quercus montana</i> and <i>Quercus coccinea</i>, along with <i>Quercus alba, Quercus rubra</i>, and <i>Quercus velutina</i>. <i>Castanea dentata</i> was a major component in the past and may be evident as root sprouts and/or decaying stumps and logs. Other associates can include <i>Acer rubrum var. rubrum, Carya tomentosa, Nyssa sylvatica, Oxydendrum arboreum</i>, and occasional <i>Pinus</i> spp. (<i>Pinus echinata, Pinus rigida, Pinus virginiana</i>). Tall shrubs and small trees can include <i>Cornus florida, Sassafras albidum</i>, and <i>Viburnum acerifolium</i>. Characteristic dwarf-shrubs and vines include <i>Gaylussacia baccata, Gaultheria procumbens, Smilax glauca, Smilax rotundifolia, Vaccinium pallidum, Vaccinium stamineum</i>, and, more locally, <i>Kalmia latifolia</i>. The herbaceous layer includes <i>Antennaria plantaginifolia, Symphyotrichum cordifolium, Carex pensylvanica, Cypripedium acaule, Danthonia spicata, Epigaea repens, Helianthus divaricatus, Helianthus hirsutus, Dichanthelium dichotomum, Polystichum acrostichoides</i>, and others. Lichens (<i>Cladonia</i> spp.) and mosses can form a prominent layer.
Comm #590	Acer saccharum - Fagus grandifolia - Fraxinus americana / Arisaema triphyllum Forest » more details accession code: urn:lsid:vegbank.org:commConcept:35248-{FF0E1D54-9989-4021-AD00-BE21CA2067E0}	NatureServe Biotics 2019	33	This association, known commonly as "northern hardwood forest," is a widespread matrix forest in the Allegheny Plateau of Pennsylvania and New York, the adjacent Lake Ontario and Lake Erie plains and in Lower New England to northern New Jersey. This forest occurs most commonly on moderately acidic (pH 5.5-7), moderate to well-drained tills at elevations generally below 762 m (2500 feet). Slope and rolling topographic settings are common. The closed-canopy forest has sparse to moderate shrub and herb cover and may have local carpets of tree seedlings in the ground vegetation. Bryoids are a minor component of the forest floor. The closed-canopy forest has sparse to moderate shrub and herb cover and may have local carpets of tree seedlings in the ground vegetation. Bryoids are a minor component of the forest floor. The canopy is dominated by <i>Acer saccharum</i> mixed with variable amounts of <i>Fagus grandifolia</i> and/or <i>Fraxinus americana</i> Associated hardwood species include <i>Acer rubrum, Betula papyrifera</i>, and <i>Betula alleghaniensis</i>, and <i>Tilia americana</i>. <i>Betula lenta</i> may be present. Conifers are usually present at low abundance. Characteristic species include <i>Pinus strobus</i> and <i>Tsuga canadensis</i>. Oaks are generally not present, although <i>Quercus rubra</i> and <i>Quercus alba</i> are sometimes present in low numbers. The shrub layer is often dominated by saplings of canopy tree species Characteristic understory shrubs or small trees include <i>Acer pensylvanicum, Amelanchier laevis, Ostrya virginiana, Viburnum acerifolium</i> and, occasionally, <i>Lindera benzoin</i>. The patchy herbaceous layer is a mix of ferns, rhizomatous herbs and clubmosses. Characteristic species include <i>Dryopteris intermedia, Dryopteris carthusiana, Polystichum acrostichoides, Huperzia lucidula, Maianthemum canadense, Clintonia borealis, Trientalis borealis, Oclemena acuminata</i>, and <i>Uvularia sessilifolia</i>. Occasional species include <i>Aralia nudicaulis, Trillium erectum, Trillium grandiflorum, Dryopteris campyloptera, Streptopus lanceolatus, Cinna latifolia, Thelypteris noveboracensis, Mitchella repens, Solidago macrophylla</i>, and <i>Medeola virginiana</i>. The bryophyte layer may include <i>Dicranum</i> spp. and <i>Leucobryum glaucum</i>. Sugar maple leaf litter is high in nitrogen relative to lignin and thus decomposes rapidly, increasing the nutrient pool in the soil organic layer. Structure and composition of the forest are maintained primarily by single small tree-fall gaps. Yellow birch is maintained in the system by mineral soils on "tip-up mounds."