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Add/Drop	Name	Reference	Plots↓	Description
Comm #251	Black Greasewood Intermittently Flooded Shrubland Alliance » more details accession code: VB.cc.29914.BLACKGREASEWOOD	NVC 2004	68
Comm #252	ABIES AMABILIS ALLIANCE » more details accession code: VB.CC.12783.ABIESAMABILISAL	Jennings 2003. Vegetation alliances: composition and function.	68
Comm #253	Quercus virginiana - Quercus hemisphaerica - Pinus taeda / Persea palustris - Ilex vomitoria Forest » more details accession code: VB.CC.31437.CEGL007027		68	This community is a low- to moderate-stature, broad-leaved evergreen forest that is often, though not always, sculpted into streamlined forms by wind-borne salt spray due to proximity to the Atlantic Ocean, especially on barrier islands. This type ranges from southeastern Virginia to South Carolina (and possibly Georgia). Canopies are dominated by <i>Quercus virginiana</i> and <i>Quercus hemisphaerica</i> with lesser amounts of <i>Pinus taeda</i> and <i>Juniperus virginiana var. silicicola</i>. Subcanopy and shrub layers are well-developed and vines are typically abundant. The herb layer is sparse and low in diversity. Typical understory components include <i>Persea borbonia, Carpinus caroliniana ssp. caroliniana, Juniperus virginiana var. silicicola, Cornus florida, Osmanthus americanus var. americanus, Ilex opaca var. opaca</i>, and <i>Zanthoxylum clava-herculis</i>. Shrub species include <i>Ilex vomitoria, Morella cerifera (= Myrica cerifera), Sabal minor</i>, and <i>Callicarpa americana</i>. Dominant vines are <i>Toxicodendron radicans, Vitis rotundifolia, Smilax</i> spp., <i>Parthenocissus quinquefolia, Bignonia capreolata, Berchemia scandens, Ampelopsis arborea</i>, and <i>Gelsemium sempervirens</i>. Typical herbs are <i>Mitchella repens, Asplenium platyneuron var. platyneuron, Chasmanthium laxum, Piptochaetium avenaceum, Galium pilosum, Dichanthelium commutatum, Elephantopus nudatus</i>, and <i>Passiflora lutea</i>. This community occurs on sand flats, lower slopes, and on stabilized dunes that are protected from saltwater flooding but experience light to moderate salt spray.
Comm #254	Tsuga canadensis - Halesia tetraptera - Magnolia fraseri / Rhododendron maximum / Dryopteris intermedia Forest » more details accession code: urn:lsid:vegbank.org:commConcept:35882-{90AC1167-A357-4167-B043-9B92AADF09DA}	NatureServe Biotics 2019	68	This association includes forests dominated by <i>Tsuga canadensis</i> and <i>Halesia tetraptera var. monticola</i>, occurring in restricted montane areas of western North Carolina and eastern Tennessee. This forest is found on protected, lower slopes and coves at elevations of 854 to 1403 m (2800-4600 feet). The most important canopy trees are <i>Tsuga canadensis</i> and <i>Halesia tetraptera var. monticola</i>, although <i>Magnolia fraseri</i> or <i>Fagus grandifolia</i> can have high canopy coverage in some examples. Some occurrences have dense, tall-shrub strata dominated by <i>Rhododendron maximum</i>, while other occurrences have a more open shrub stratum with greater herbaceous cover, often dominated by <i>Dryopteris intermedia</i>. Other subcanopy/shrub species may include <i>Acer pensylvanicum, Acer saccharum, Acer rubrum, Amelanchier laevis, Betula alleghaniensis, Betula lenta</i>, and <i>Prunus pensylvanica</i>. Other common herbaceous species include <i>Mitchella repens, Medeola virginiana, Polystichum acrostichoides, Solidago curtisii, Viola blanda</i>, and <i>Viola hastata</i>. <i>Rubus canadensis</i> is also common. This community is distinguished from ~<i>Liriodendron tulipifera - Betula lenta - Tsuga canadensis / Rhododendron maximum</i> Forest (CEGL007543)$$ by not having <i>Liriodendron tulipifera</i> as an important component and by generally occurring at higher elevations (over 915 m [3000 feet]). This community is distinguished from ~<i>Betula alleghaniensis - (Tsuga canadensis) / Rhododendron maximum / (Leucothoe fontanesiana)</i> Forest (CEGL007861)$$ by occurring on more protected sites and having more diverse tree and herb strata.
Comm #255	Acer rubrum - Nyssa sylvatica / Ilex verticillata - Vaccinium fuscatum / Osmunda cinnamomea Seep Forest » more details accession code: urn:lsid:vegbank.org:commConcept:36038-{677D2257-0BCE-4DC3-9E21-EEADC37AB05A}	NatureServe Biotics 2019	68	This community occurs on groundwater-saturated flats and low slopes along streams in the Ridge and Valley, northern Cumberland Plateau, Northern Blue Ridge, and western Piedmont at elevations of 200-900 m (700-2900 feet). Habitats are usually more-or-less narrow and elongate, with hummock-and-hollow microtopography, and frequently with a small ephemeral stream channel running through or adjacent to the community. Substrates are poorly drained mineral soils with numerous hydric indicators. The ground surface is slightly sloping, and drainage is usually via small, intricately braided channels with interspersed hummocks. The canopy is usually closed and consists of <i>Acer rubrum, Nyssa sylvatica</i>, and <i>Liriodendron tulipifera</i>. <i>Quercus alba</i> is an important associate in some areas, and <i>Ulmus rubra, Fraxinus americana</i>, and <i>Platanus occidentalis</i> are present in some stands. Minor or local tree species include <i>Magnolia acuminata, Tsuga canadensis, Betula lenta, Pinus rigida</i>, and <i>Pinus strobus</i>. The shrub stratum may be well-developed and includes <i>Ilex verticillata, Ilex opaca, Vaccinium corymbosum, Kalmia latifolia, Alnus serrulata, Viburnum nudum var. cassinoides, Viburnum dentatum, Smilax</i> spp., and, less consistently, <i>Carpinus caroliniana, Asimina triloba, Euonymus americanus, Lindera benzoin, Gaylussacia frondosa, Gaylussacia baccata, Menziesia pilosa, Vaccinium fuscatum, Chionanthus virginicus, Viburnum nudum var. nudum, Rhododendron viscosum</i>, and <i>Toxicodendron vernix</i>. <i>Rubus hispidus</i> is an abundant creeping vine in many stands. Typical herbaceous plants include <i>Osmunda cinnamomea, Carex gynandra, Carex lurida, Carex atlantica, Carex debilis, Thelypteris noveboracensis, Platanthera clavellata, Chelone glabra, Medeola virginiana, Dioscorea quaternata, Juncus effusus, Lycopus uniflorus, Lycopodium obscurum, Osmunda regalis var. spectabilis, Symplocarpus foetidus, Veratrum viride, Viola hastata</i>, and <i>Viola cucullata</i>.
Comm #256	Salix planifolia / Caltha leptosepala Wet Shrubland » more details accession code: urn:lsid:vegbank.org:commConcept:31573-{736659B8-2E0F-4867-8C6D-9D233CF5CD4F}	NatureServe Biotics 2019	67	This major wetland/riparian shrubland association typically occurs in the upper montane and subalpine zones in the southern Rocky Mountains of Colorado to the Beartooth Mountains and Plateau in northwestern Wyoming. Elevation ranges from 2700-3700 m (8900-12,100 feet). Stands typically occurs in wide, glaciated valleys adjacent to streams, around kettle ponds, in depressions and on slopes where snowmelt runoff saturates soils for much of the growing season. Sites may be flat or uneven with raised hummocks to moderately sloping. The water table at these sites is usually near the surface throughout the growing season. The alluvial substrates are highly variable. This vegetation is characterized by a nearly closed shrub layer that is dominated by <i>Salix planifolia</i> (often forming nearly pure stands with 30-100% cover), with an herbaceous layer dominated by the wet forb <i>Caltha leptosepala</i>. Other willow species that may be present at lower elevation are <i>Salix geyeriana</i> or <i>Salix monticola</i> and at higher elevations <i>Salix brachycarpa, Salix glauca</i>, and <i>Salix wolfii</i>. Other shrubs that may be present in lower concentrations include <i>Betula glandulosa</i> and <i>Dasiphora fruticosa ssp. floribunda</i>. <i>Picea engelmannii</i> is occasionally scattered throughout the stand. The herbaceous layer is limited to openings between shrubs and dominated by mesic and wet forb species that exceed cover of graminoids. <i>Caltha leptosepala</i> is generally present to dominant (frequency or cover). Other mesic and wet forbs species include <i>Aconitum columbianum, Cardamine cordifolia, Delphinium barbeyi, Erigeron peregrinus, Ligusticum porteri, Mertensia ciliata, Pedicularis groenlandica, Polygonum bistortoides, Rhodiola rhodantha, Saxifraga odontoloma, Senecio triangularis</i>, and <i>Thalictrum fendleri</i>. Wet graminoid species, such as <i>Calamagrostis canadensis, Carex aquatilis, Carex utriculata</i>, and <i>Deschampsia cespitosa</i>, may be present with low cover.
Comm #257	Eriogonum fasciculatum / Selaginella bigelovii Sparse Herbaceous Vegetation » more details accession code: VB.CC.37389.CEGL002886		66	This herbaceous association occurs on flat to moderately steep and very steep slopes of variable aspect at low to high elevations between 81 and 923 m. It is dominated by <i>Selaginella bigelovii</i> in the low layer. <i>Eriogonum fasciculatum</i> is characteristically abundant the shrub layer, and <i>Quercus agrifolia, Schinus molle</i>, and <i>Eucalyptus</i> spp. are infrequently found in the tree layer at low cover.
Comm #258	Malosma laurina - Eriogonum fasciculatum Shrubland » more details accession code: VB.CC.37431.CEGL003702		66	This shrubland association occurs on somewhat steep to abrupt southwest- and southeast-facing slopes at low elevations between 0 and 602 m. It is characterized by a codominance of <i>Malosma laurina</i> and <i>Eriogonum fasciculatum</i> in the shrub layer. The herbaceous layer is insignificant. The emergent tree layer is usually absent.
Comm #259	Salix gooddingii Riparian Woodland » more details accession code: urn:lsid:vegbank.org:commConcept:31648-{691E7012-B3B6-4DA4-91B5-CC72CD0C84FE}	NatureServe Biotics 2019	66	This riparian woodland is found in the Trans-Pecos of western Texas, New Mexico, southern Arizona and possibly north of the Mogollon Rim, and Nevada. It is also found in the Mexican states of Chihuahua and Coahuila and possibly Sonora. Elevation range is wide, from 239-2210 m (780-7245 feet), but stands generally occur below 1300 m (4260 feet). Sites are flat to gently sloping and occur along the alluvial terraces of streams in mesic desert canyons and floodplains on basin floors. Stands also occur in isolated pockets in canyons and rocky floodplains of small, intermittent streams associated with seeps and springs. Alluvial substrates are variable but are often fine-textured loams or clays. The vegetation is characterized by abundant <i>Salix gooddingii</i> that dominates or codominates the open to moderately dense (20-60% cover) tree canopy. <i>Prosopis velutina, Prosopis glandulosa</i>, or <i>Fraxinus velutina</i> may codominate the 5- to 15-m tall tree canopy. <i>Populus fremontii</i> is generally absent or uncommon (&lt;1%). <i>Populus angustifolia</i> is occasionally present in the canopy. Shrubs may be present but seldom form a stratum. Other tree and shrub species present may include <i>Baccharis salicifolia, Celtis laevigata var. reticulata, Juglans microcarpa, Mahonia haematocarpa, Quercus</i> spp., <i>Sapindus saponaria var. drummondii, Ungnadia speciosa</i>, and <i>Ziziphus obtusifolia</i>, depending on location and hydrology. The herbaceous layer is typically moderately dense to dense, often diverse and composed of mesic forbs and graminoids. Common species include <i>Ambrosia confertiflora, Berula erecta, Eleocharis palustris, Equisetum laevigatum, Ipomoea</i> spp., <i>Juncus arcticus, Juncus arcticus ssp. littoralis, Muhlenbergia asperifolia, Physalis longifolia, Polygonum</i> spp., <i>Schoenoplectus</i> spp. <i>Veronica anagallis-aquatica</i>, and <i>Xanthium strumarium</i>. Disturbance is common in this woodland, and introduced species such as <i>Echinochloa crus-galli, Lactuca serriola, Schedonorus arundinaceus, Rumex crispus, Sorghum halepense</i>, and <i>Tamarix</i> spp. are present in many stands. Diagnostic of the woodland is the dominance or codominance of <i>Salix gooddingii</i> in the tree canopy with <i>Populus fremontii</i> absent or uncommon.
Comm #260	Acer rubrum var. trilobum / Viburnum nudum var. nudum / Osmunda cinnamomea - Saururus cernuus - Impatiens capensis Seep Forest » more details accession code: urn:lsid:vegbank.org:commConcept:33215-{768AEDC2-7916-45F4-A98A-6FD78F74EE82}	NatureServe Biotics 2019	66	This saturated vegetation is found in seepage areas, often on edges of floodplains or in headwaters of small streams, in the Inner Coastal Plain and Piedmont of North Carolina, South Carolina, Georgia, Virginia, and likely other states. The canopy includes <i>Acer rubrum, Quercus phellos</i>, and possibly other wetland trees. Some examples may contain, or even be codominated by, <i>Nyssa sylvatica</i> or less likely <i>Nyssa biflora</i>. Some herbs found in this association include <i>Saururus cernuus, Impatiens capensis, Osmunda cinnamomea, Osmunda regalis var. spectabilis, Boehmeria cylindrica, Rudbeckia laciniata, Ranunculus recurvatus</i>, and <i>Juncus</i> spp. Some more western examples may contain <i>Chelone glabra</i> and <i>Saxifraga micranthidifolia</i>. Occurrences in South Carolina's Savannah River drainage are dominated by <i>Carex atlantica ssp. capillacea, Carex debilis var. pubera, Carex debilis var. debilis</i>, and <i>Carex leptalea</i>.