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Add/Drop	Name	Reference	Plots↓	Description
Comm #441	Alnus incana / Mesic Forbs Wet Shrubland » more details accession code: urn:lsid:vegbank.org:commConcept:30056-{55B47BD2-01BD-42FB-8573-4A9CED73FB7D}	NatureServe Biotics 2019	43	This shrubland association has a widespread distribution that includes the western states of Montana, Idaho, Wyoming, Utah, Nevada, California and Colorado. Stands occur on streambanks and terraces immediately adjacent to streams with a bedload of boulders, cobble or gravel. Channel type is variable, ranging from high-gradient reaches that support the association as stringers, to more extensive stands on sites with a developed floodplain. Soils typically have a seasonally high water table with mottling in the top 25 cm of the surface. These riparian shrublands are characterized by stands of medium-tall and tall deciduous shrubs and a thick herbaceous undergrowth of forbs and wetland-indicator grasses. <i>Alnus incana</i> clearly dominates the tall-shrub overstory with over 25% cover. Conifers, including <i>Abies lasiocarpa, Picea engelmannii</i>, and <i>Pinus contorta</i>, are sometimes present. A low-shrub layer is often present and may include <i>Lonicera involucrata, Cornus sericea</i>, and species of <i>Ribes, Rosa</i>, and <i>Salix</i>. Undisturbed stands have abundant forbs and native grasses. The undergrowth is characterized by a mixed forb cover of <i>Angelica arguta, Heracleum maximum, Equisetum arvense, Mertensia</i> spp., <i>Aconitum columbianum, Senecio triangularis</i>, and/or <i>Maianthemum stellatum</i> with over 100% cover in combination. Native graminoids include <i>Cinna latifolia, Carex simulata, Glyceria striata</i>, and <i>Elymus glaucus</i>. Stands disturbed by season-long livestock grazing have reduced forb cover and increased non-native grasses, including <i>Poa pratensis</i> and <i>Agrostis stolonifera</i>. Large stands (&gt;100 square meters), with the native herbaceous undergrowth intact are uncommon.
Comm #442	Picea rubens - (Betula alleghaniensis, Aesculus flava) / Viburnum lantanoides / Solidago glomerata Forest » more details accession code: urn:lsid:vegbank.org:commConcept:34903-{E54DB024-F9D3-4B3C-B78D-798DFC6EE547}	NatureServe Biotics 2019	43	This association occurs in the broad elevational transition zone between spruce-fir and northern hardwoods in the Southern Blue Ridge at approximately 1400 to 1555 m (4600-5100 feet) elevation. This association occurs on steep slopes and protected ridges, over shallow, stony soils. The canopy is composed of <i>Picea rubens</i> codominating with the deciduous species <i>Betula alleghaniensis, Fagus grandifolia</i>, and <i>Aesculus flava</i>, occurring singly or in combination. At higher elevations, <i>Abies fraseri</i> may be a minor canopy component. The shrub stratum is open to absent. <i>Viburnum lantanoides</i> is a common shrub, and <i>Acer pensylvanicum</i> and <i>Amelanchier laevis</i> often occur as small trees. The herbaceous stratum is lush and diverse. Typical herbs include <i>Oclemena acuminata, Carex pensylvanica, Dryopteris campyloptera, Dryopteris intermedia, Maianthemum canadense, Oxalis montana, Solidago glomerata</i>, and <i>Rugelia nudicaulis</i> (in the Great Smoky Mountains).
Comm #443	Adenostoma fasciculatum - Ceanothus megacarpus Shrubland » more details accession code: VB.CC.37457.CEGL002926		42	This shrubland association occurs on gentle to steep slopes of variable aspect at low to mid elevations between 130 and 810 m. It is dominated by <i>Adenostoma fasciculatum</i> in the shrub layer, with lower cover of <i>Ceanothus megacarpus</i>. It has no significant herbaceous layer. The emergent tree layer is generally non-existent but may include occasional emergent <i>Quercus agrifolia</i>.
Comm #444	PSEUDOTSUGA MENZIESII WOODLAND ALLIANCE » more details accession code: VB.CC.9599.PSEUDOTSUGAMENZ	Jennings 2003. Vegetation alliances: composition and function.	42
Comm #445	Iodine Bush Shrubland Alliance » more details accession code: VB.cc.30066.IODINEBUSHSHRUB	NVC 2004	42
Comm #446	Poa pratensis Herbaceous Alliance » more details accession code: VB.cc.30179.POAPRATENSISHER	NVC 2004	42
Comm #447	Populus angustifolia Temporarily Flooded Forest Alliance » more details accession code: VB.cc.30785.POPULUSANGUSTIF	NVC 2004	42
Comm #448	Pinus palustris / Quercus marilandica / Gaylussacia dumosa / Aristida stricta Woodland » more details accession code: urn:lsid:vegbank.org:commConcept:32468-{9868BA26-D32E-4547-83D4-01F9008F5AD3}	NatureServe Biotics 2019	42	This longleaf pine/scrub oak association is distributed primarily in the Fall-line Sandhills of south-central North Carolina and north-central South Carolina, and also occurs in more scattered areas in the Middle and Outer Coastal Plain of southeastern North Carolina and northeastern South Carolina. <i>Pinus palustris</i> dominates the open canopy. <i>Quercus marilandica</i> is the dominant scrub oak, with smaller amounts of <i>Quercus laevis, Quercus incana</i>, and <i>Quercus margarettae</i> (all of varying stature and density depending on fire history). <i>Gaylussacia dumosa</i> and <i>Vaccinium tenellum</i> are often common. <i>Aristida stricta</i> dominates the herb layer. Other typical species include <i>Schizachyrium scoparium, Andropogon ternarius, Andropogon gyrans var. gyrans, Tephrosia virginiana, Silphium compositum, Pityopsis graminifolia, Scleria triglomerata, Rhynchosia reniformis, Symphyotrichum walteri, Ionactis linariifolius, Tragia urens, Toxicodendron pubescens, Sassafras albidum</i>, and <i>Diospyros virginiana</i>. Typical soils are Vaucluse (Typic Hapludult), Gilead (Aquic Hapludult), Dothan (Plinthic Paleudult), and Fuquay (Plinthic Paleudult). This association often occurs in landscape complexes with other associations in this alliance.
Comm #449	Salix monticola / Mesic Forbs Wet Shrubland » more details accession code: urn:lsid:vegbank.org:commConcept:31566-{E48BDD26-67F5-48CE-B651-44F5554CBFBC}	NatureServe Biotics 2019	42	This plant association is a major type in the upper montane valleys of the Southern Rocky Mountains in Colorado (2015-3265 m [6600-10,700 feet]). Physically, it is a tall (1.5-2.5 m [5-8 feet]), deciduous shrubland with an herbaceous layer dominated by a variety of grasses and forbs. Stands occur within 0.75 m (2.5 feet) of the annual high-water mark on sandy clays to silty clay loams. <i>Salix monticola</i> is always the most abundant willow species (20-100% cover), even if it is not the clear dominant. Other willows include <i>Salix drummondiana, Salix planifolia, Salix bebbiana, Salix geyeriana, Salix brachycarpa, Salix wolfii</i>, and <i>Salix eriocephala</i>. <i>Alnus incana, Ribes inerme</i>, and <i>Lonicera involucrata</i> are also often present. Total forb cover ranges from 10-70%. No single forb species is particularly more abundant than any other, nor is any species consistently present in all stands. Forb species that may be present include <i>Heracleum maximum, Rudbeckia laciniata, Mertensia ciliata</i>, and <i>Fragaria virginiana</i>. Graminoid cover ranges from 0-50%, but rarely exceeds total forb cover. Species present may include <i>Calamagrostis canadensis</i> and <i>Carex utriculata</i>.
Comm #450	Pinus palustris / Quercus incana / Aristida stricta - Sorghastrum nutans - Anthaenantia villosa Woodland » more details accession code: urn:lsid:vegbank.org:commConcept:32451-{63A389B3-467E-4DEF-B012-7EB014B70012}	NatureServe Biotics 2019	42	This association occurs in sandhill landscapes of North Carolina and South Carolina and is found in more mesic situations such as upland slopes, flats, and shallow swales with loamy or otherwise more mesic soils, such as the Wagram series (Arenic Paleudult). <i>Pinus palustris</i> dominates the open canopy. The dominant scrub oak is <i>Quercus incana</i>, though <i>Quercus margarettae, Quercus laevis</i>, and <i>Quercus marilandica</i> may be present. <i>Aristida stricta</i> dominates the herb layer. Other typical species include <i>Andropogon gyrans var. gyrans, Schizachyrium scoparium, Aristida purpurascens var. purpurascens, Paspalum bifidum, Anthaenantia villosa, Liatris</i> sp., <i>Ionactis linariifolius, Rhynchospora</i> spp., <i>Solidago odora var. odora, Paspalum laeve, Gymnopogon brevifolius, Sorghastrum nutans, Sorghastrum elliottii</i>, and <i>Tridens carolinianus</i>.