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Add/Drop	Name	Reference	Plots↓	Description
Comm #561	Pinus palustris / Quercus laevis / Aristida beyrichiana - Pterocaulon pycnostachyum Woodland » more details accession code: urn:lsid:vegbank.org:commConcept:33276-{2CBED207-8F3B-4A02-950E-A152364D6ACE}	NatureServe Biotics 2019	34	This association contains subxeric <i>Pinus palustris</i> communities of northern and central peninsular Florida. Soils are Entisols and Ultisols with relatively high seasonal water tables, base saturation, and fine particle composition (although silt and clay composition remains very low, &lt;5% in the surface soil). This association is characterized by a scattered <i>Pinus palustris</i> canopy with an <i>Aristida beyrichiana</i>-dominated ground layer. <i>Quercus laevis</i> is the most abundant and constant species in the subcanopy layer, but <i>Quercus geminata</i> and <i>Quercus incana</i> may also be present and typically less abundant than <i>Quercus laevis</i>. Dominants, in addition to the nominals, include <i>Licania michauxii, Serenoa repens</i>, and <i>Vaccinium stamineum</i> in shrub layer and <i>Pityopsis graminifolia</i> and <i>Schizachyrium scoparium var. stoloniferum</i> in the herbaceous layer. The herbaceous layer is considerably more species-rich than xeric associations in peninsular Florida, with particularly high diversity in the legume family.
	Allenrolfea occidentalis – Suaeda moquinii » more details accession code: NOT CURRENTLY ACCEPTED	CDFW Natural Communities List	34
Comm #562	Juncus arcticus ssp. littoralis Wet Meadow » more details accession code: urn:lsid:vegbank.org:commConcept:30747-{090C6F88-FC06-40F7-A563-8BD594B476B9}	NatureServe Biotics 2019	34	This wet meadow community is found widely throughout the western United States and into western Canada. This herbaceous wet meadow occurs as small to extensive, open to typically dense patches on flat stream benches, along overflow channels, and near springs. Habitats are often alkaline meadows and may have long-term grazing disturbance. Soils are variable and range from poorly to well-drained, sandy clay loam to fine sand-textured and are usually mottled or gleyed. Stands are characterized by dense swards of <i>Juncus arcticus ssp. littoralis</i>. In montane zones and the Great Basin, minor cover of <i>Carex</i> species, including <i>Carex aquatilis, Carex praegracilis, Carex nebrascensis</i>, or <i>Carex utriculata</i>, is often present; other common species include <i>Deschampsia cespitosa, Distichlis spicata, Glyceria striata, Hordeum jubatum, Muhlenbergia asperifolia, Pascopyrum smithii, Phleum alpinum</i>, and <i>Sporobolus airoides</i>. The introduced perennial sod grasses <i>Poa pratensis</i> or <i>Agrostis stolonifera</i> codominate some stands. Forb cover is generally low and includes wetland species such as <i>Caltha leptosepala, Rumex aquaticus</i>, and <i>Dodecatheon pulchellum</i>. <i>Iris missouriensis</i> can be common in heavily grazed stands. Shrubs are not common. This association is often considered to be a grazing-induced community since it increases with disturbance, though it can be a stable late-seral community.
Comm #563	Pinus banksiana / Abies balsamea Forest » more details accession code: urn:lsid:vegbank.org:commConcept:31345-{F3228B6D-6951-401C-B40B-482CCE7822A0}	NatureServe Biotics 2019	34	This jack pine / fir forest is found in the subboreal region of the midwestern United States and in central Canada. Stands occur on thin soil to moderately deep (50-100 cm), often sandy soils. The tree layer of this community is dominated by <i>Pinus banksiana</i>, often to the exclusion of other species, but occasionally mixed stands with <i>Populus tremuloides</i> are found. <i>Abies balsamea, Betula papyrifera, Picea mariana</i>, and <i>Populus tremuloides</i> dominate the sapling and seedling layers and sometimes occur in the canopy. There is a well-developed shrub layer containing species such as <i>Amelanchier alnifolia, Corylus cornuta, Diervilla lonicera, Linnaea borealis, Lonicera canadensis, Vaccinium angustifolium</i>, and <i>Vaccinium myrtilloides</i>. The herbaceous layer is dominated by dry-mesic forest species, including <i>Aralia nudicaulis, Eurybia macrophylla, Clintonia borealis, Coptis trifolia, Galium boreale</i>, and <i>Melampyrum lineare</i>. Mosses and lichens are common on the forest floor.
Comm #564	Ceanothus cuneatus Shrubland » more details accession code: urn:lsid:vegbank.org:commConcept:31922-{36D42D95-F276-4406-838D-B38701A54275}	NatureServe Biotics 2019	34	This chaparral shrubland is found in the Klamath Mountains and the central and southern coastal mountains of California. It occurs on moderately steep to steep slopes on most aspects. Sites can be on very rocky serpentine soils in northern California, or on sand to sandy loams derived from fanglomerate, granite, and rhyolite. Shrub cover is moderate to continuous, with <i>Ceanothus cuneatus</i> being the sole dominant shrub. Other shrubs present include <i>Adenostoma fasciculatum</i> in central California, and <i>Ericameria ophitidis</i> on serpentine sites in northern California, each with sparse cover.
Comm #565	Pinus palustris - Pinus serotina / Pleea tenuifolia - Aristida stricta Woodland » more details accession code: urn:lsid:vegbank.org:commConcept:32533-{31085E16-DC2C-4F0F-BF7F-E55369CDE92A}	NatureServe Biotics 2019	34	This saturated longleaf pine - pond pine woodland association is only found on wet flats of the Atlantic Coastal Plain of North Carolina. Stands are dominated by <i>Pinus palustris</i> and <i>Pinus serotina</i>. The herbaceous layer is characterized by the presence or partial dominance of <i>Aristida stricta</i> and <i>Pleea tenuifolia</i>.
Comm #566	Juniperus virginiana - Ulmus alata / Schizachyrium scoparium Woodland » more details accession code: urn:lsid:vegbank.org:commConcept:33231-{6D2C6BB1-2199-4C10-BA95-AD3F5605B00C}	NatureServe Biotics 2019	34	This woodland occurs on steep rock outcrops of mafic rock and calcareous mudstone in the North Carolina and southern Virginia Piedmont. The open canopy is dominated by <i>Juniperus virginiana var. virginiana</i> and <i>Ulmus alata</i>, with <i>Acer rubrum var. rubrum</i> and <i>Pinus virginiana</i> sharing dominance in those occurrences in which they are present. Oak species typically do not share dominance in this type. Other woody species include <i>Chionanthus virginicus, Carya glabra, Fraxinus americana, Quercus rubra var. rubra, Quercus montana, Quercus nigra, Carya ovata, Carya pallida, Celtis occidentalis, Ostrya virginiana, Rhus copallinum, Vaccinium arboreum, Vaccinium pallidum</i>, and <i>Diospyros virginiana</i>. The herbaceous stratum is usually dominated by <i>Schizachyrium scoparium</i>, although some of the Virginia stands are dominated by <i>Carex pensylvanica</i> and/or <i>Danthonia spicata</i>. Other common species in the herbaceous stratum include <i>Asclepias verticillata, Symphyotrichum dumosum var. dumosum, Asplenium platyneuron var. platyneuron, Bignonia capreolata, Campsis radicans, Cheilanthes lanosa, Cheilanthes tomentosa, Commelina erecta var. erecta, Danthonia sericea, Danthonia spicata, Dichanthelium depauperatum, Dichanthelium laxiflorum, Dichanthelium sphaerocarpon, Euphorbia corollata, Gamochaeta purpurea, Gelsemium sempervirens, Heuchera americana, Hypericum gentianoides, Hypericum hypericoides ssp. multicaule, Lespedeza virginica, Nuttallanthus canadensis, Oxalis dillenii, Packera</i> spp., <i>Pleopeltis polypodioides ssp. michauxiana, Selaginella rupestris, Sedum glaucophyllum, Sorghastrum nutans</i>, and <i>Vitis rotundifolia</i>.
Comm #567	Quercus muehlenbergii - Quercus (alba, rubra) - Carya cordiformis / Viburnum prunifolium Forest » more details accession code: urn:lsid:vegbank.org:commConcept:33570-{9B457505-E783-40B0-9665-DBCE848711FB}	NatureServe Biotics 2019	34	These are rich forests of moderately steep slopes in the Ridge and Valley and adjacent provinces over various limestone and dolomitic formations. The canopy ranges from closed to partly open and is dominated by a mixture of <i>Quercus muehlenbergii</i>, other oaks (particularly <i>Quercus alba</i> and <i>Quercus rubra</i>), and several hickories (<i>Carya cordiformis, Carya glabra</i>, and <i>Carya ovalis</i>). <i>Fraxinus americana, Liriodendron tulipifera, Acer saccharum, Quercus velutina, Ulmus rubra, Tilia americana</i>, and <i>Juglans nigra</i> may also be present in the canopy. Disturbed stands may have a higher proportion of <i>Fraxinus americana, Celtis occidentalis</i>, and other early-successional species in the overstory. The relatively open subcanopy may contain <i>Acer saccharum, Aesculus flava</i>, and <i>Juniperus virginiana var. virginiana</i>, as well as smaller individuals of <i>Fraxinus americana</i> and <i>Carya</i> spp. <i>Viburnum prunifolium, Cercis canadensis var. canadensis, Cornus florida, Ulmus rubra, Ostrya virginiana, Viburnum prunifolium</i>, and <i>Asimina triloba</i> are present as tall shrubs or small trees. Low shrubs include <i>Rhus aromatica var. aromatica, Dirca palustris, Staphylea trifolia</i>, and <i>Toxicodendron radicans</i>. Herbs present include <i>Ageratina altissima, Amphicarpaea bracteata, Asclepias quadrifolia, Bromus pubescens, Brachyelytrum erectum, Circaea lutetiana ssp. canadensis, Collinsonia canadensis, Dichanthelium boscii, Dioscorea quaternata, Desmodium glutinosum, Elymus hystrix var. hystrix, Euphorbia mercurialina, Eurybia divaricata, Galium circaezans, Geranium maculatum, Hexastylis arifolia var. ruthii, Houstonia longifolia, Hydrophyllum virginianum, Maianthemum racemosum, Oxalis grandis, Packera obovata, Polystichum acrostichoides, Sanicula odorata, Sanguinaria canadensis, Sedum ternatum, Thaspium barbinode, Viola x palmata</i>, and <i>Viola pubescens</i>. Some small patches of <i>Arundinaria gigantea</i> are also present in stands at the southern end of the range.
Comm #568	Tsuga canadensis - Acer saccharum - Fagus grandifolia / Dryopteris intermedia Forest » more details accession code: urn:lsid:vegbank.org:commConcept:35255-{158AC920-DC89-42A5-BAC5-3CA3F0BB7F86}	NatureServe Biotics 2019	34	This association comprises hemlock - northern hardwood forests of the Allegheny Plateau, Lake Ontario and Lake Erie plains, Lower New England, and south to higher elevations of the Central Appalachian region. This forest is associated with cool, dry-mesic to mesic sites and acidic soils, often on rocky, north-facing slopes. Soils can have a thick, poorly decomposed duff layer over sandy loams. <i>Tsuga canadensis</i> is characteristic and usually dominant in the coniferous to mixed canopy. While hemlock generally forms at least 50% of the canopy, in some cases it may be as low as 25% relative dominance. Hardwood codominants include <i>Acer saccharum</i> and <i>Fagus grandifolia</i> (common), <i>Betula alleghaniensis</i> (uncommon), and <i>Betula lenta</i>, which may replace <i>Betula alleghaniensis</i> in some areas. <i>Ostrya virginiana</i> may be present as a small tree. <i>Quercus</i> spp. and <i>Pinus strobus</i> tend to be absent or, if present, only occur with low abundance. The shrub layer may be dense to fairly open and often includes <i>Viburnum acerifolium</i> and <i>Acer pensylvanicum</i> in addition to <i>Tsuga canadensis</i> regeneration. Herbs may be sparse, particularly in dense shade, but include <i>Dryopteris intermedia, Medeola virginiana, Oxalis montana, Mitchella repens, Maianthemum canadense, Uvularia sessilifolia, Polystichum acrostichoides, Trientalis borealis, Huperzia lucidula, Eurybia divaricata, Oclemena acuminata, Dennstaedtia punctilobula</i>, and <i>Thelypteris noveboracensis</i>. Nonvascular plants may be well-developed, often characterized by the liverwort <i>Bazzania trilobata</i>. Diagnostic characteristics of this forest are the dominance of <i>Tsuga canadensis</i>, presence of <i>Acer saccharum</i> and <i>Fagus grandifolia</i>, low abundance of either <i>Betula alleghaniensis</i> or <i>Betula lenta</i>, and a lack of abundant <i>Quercus</i> spp. or <i>Pinus strobus</i>. In Virginia stands, the most abundant trees are <i>Tsuga canadensis, Betula alleghaniensis, Acer rubrum</i>, and <i>Quercus rubra</i>; <i>Fagus grandifolia</i> and <i>Acer saccharum</i> are both inconstant and only occasionally important.
Comm #569	Peltandra virginica - Saururus cernuus - Boehmeria cylindrica / Climacium americanum Marsh » more details accession code: urn:lsid:vegbank.org:commConcept:35885-{C1452F18-CF13-408C-A4D2-0034C2E70981}	NatureServe Biotics 2019	34	This vegetation occupies depressions of Piedmont and mountain floodplains, as well as broad flat floodplains of the Coastal Plain of Delaware and New Jersey. These depressions are usually abandoned channel segments or swales behind natural levees in which water is ponded for all or much of the year. Water may be supplied primarily by stream flooding or by rainfall. Vegetative cover is variable and may be confined to edges or shallower portions that dry out during the growing season. The vascular plant species vary widely among examples. Emergent vegetation may include <i>Peltandra virginica, Dulichium arundinaceum</i>, and <i>Polygonum</i> spp. <i>Carex crinita</i> or some other wetland <i>Carex</i> species are almost always present. <i>Saururus cernuus</i> and <i>Boehmeria cylindrica</i> are other typical herbs. Larger examples may have pad-leaved aquatic species such as <i>Brasenia schreberi</i> or <i>Nymphaea odorata</i>. Some examples have wetland shrubs on edges or in shallow portions, including <i>Cornus amomum</i> and <i>Cephalanthus occidentalis</i>. The moss <i>Climacium americanum</i> is often abundant on the landward side.