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Reference
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Description |
Comm #1461
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Baccharis sarothroides Intermittently Flooded Shrubland Alliance
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accession code: VB.cc.30631.BACCHARISSAROTH
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NVC 2004 |
11
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Comm #1462
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Pinus serotina / Cyrilla racemiflora - Lyonia lucida - Ilex glabra Swamp Woodland
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accession code: urn:lsid:vegbank.org:commConcept:32542-{C51C1ECC-EF70-4F33-8454-585689B18CBF}
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NatureServe Biotics 2019 |
11
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This woodland, with a canopy dominated by <i>Pinus serotina</i> (cover greater than 50%) over a dense shrub layer, occurs within a mosaic of other peatland communities on poorly drained interstream flats of outer coastal terraces. The canopy is variable in closure, from closed to fairly sparse; larger shrubs range from 2-4 m in height. The community also occurs in isolated wetlands such as Carolina bays. Other canopy species in this community can include <i>Gordonia lasianthus, Magnolia virginiana, Persea palustris, Acer rubrum var. trilobum</i> (in fire-suppressed examples), <i>Pinus taeda</i> (in disturbed examples), and less commonly, <i>Chamaecyparis thyoides</i>. The bay species, <i>Gordonia lasianthus, Persea palustris</i>, and <i>Magnolia virginiana</i>, are present also in the shrub layer. Other shrubs present include <i>Ilex myrtifolia, Clethra alnifolia, Morella caroliniensis, Aronia arbutifolia</i>, and <i>Viburnum nudum var. nudum</i>. Herbs generally are not common. This community is present on the Coastal Plain from northern North Carolina to South Carolina, but probably absent from Georgia and northern Florida. |
Comm #1463
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Pinus edulis - Juniperus spp. / Quercus gambelii Woodland
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accession code: urn:lsid:vegbank.org:commConcept:29700-{C3D33EF9-6284-4297-A395-24604613A869}
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NatureServe Biotics 2019 |
11
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Comm #1464
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Senecio triangularis Wet Meadow
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accession code: urn:lsid:vegbank.org:commConcept:30896-{5D8191D2-4640-4C12-BCD5-A95036BE0E8E}
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NatureServe Biotics 2019 |
11
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This association has large gaps in its documented range, occurring in the alpine/subalpine of Colorado and reported again in the mountains of Montana, eastern Oregon and northward into Alberta. This broadly distributed wetland type occurs in small and often linear patches. In Montana and Oregon this type has been well-documented as a riparian stringer of high-gradient, ephemeral, first- or second-order streams; water tables are at the surface throughout the summer. This type also occurs as a species-rich herb meadow on fluvial, residual and colluvial landforms, many of which are subject to snow avalanches. Its documented elevation range in Montana-Alberta is from 1225 to 2181 m (4020-7150 feet). All substrates are apparently relatively medium- to coarse-textured and well-drained. However, all these seemingly disparate environments are subirrigated, with oxygenated water through most of the growing season. The vegetation is characterized by a dense herbaceous layer dominated by <i>Senecio triangularis</i>. Graminoids are a minor component, with <i>Poa alpina, Phleum alpinum, Juncus drummondii, Trisetum spicatum, Elymus glaucus, Glyceria striata</i>, and <i>Carex disperma</i> the reported species. Shrubs are virtually absent; only <i>Ribes</i> spp. associated with wetlands are present in trace amounts. The diagnostic forb <i>Senecio triangularis</i> is 100% constant and almost always the dominant, the only recorded exceptions being <i>Chamerion</i> spp. and <i>Epilobium</i> spp. which may increase markedly following disturbance. Other moderate- to high-constancy forbs indicative of wet-site conditions include <i>Trollius laxus, Parnassia fimbriata, Mimulus lewisii, Veratrum viride, Equisetum arvense, Thalictrum occidentale, Geum macrophyllum, Arnica cordifolia</i>, and <i>Ranunculus</i> spp. Species more associated with the diverse forb meadow condition include <i>Allium schoenoprasum, Arnica mollis, Angelica arguta, Castilleja rhexiifolia, Castilleja miniata, Chamerion angustifolium, Erigeron peregrinus, Epilobium</i> spp. (including <i>Epilobium ciliatum, Epilobium anagallidifolium</i>), and <i>Valeriana sitchensis</i>. |
Comm #1465
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Salix geyeriana / Mesic Forbs Wet Shrubland
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accession code: urn:lsid:vegbank.org:commConcept:31574-{F47EEABD-B01F-42E1-BD52-786FFAC84246}
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NatureServe Biotics 2019 |
11
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The association is widely distributed, but infrequently sampled, in the northern central and southern Rocky Mountains at mid to high elevations of about 1122 to over 3019 m (3680-9900 feet). This association usually occurs in wide, low-gradient valley bottoms with sinuous streams or large rivers, but it is also known from narrower, slightly steeper valleys of headwater creeks. Sites supporting this association include terraces and streambanks (at or much higher than mean high water), as well as the drier margins of wetland floodplains. Soils are highly stratified alluvium and range from well-drained sandy loams and clay loams, with large amounts of coarse fragments intermixed, to highly organic and poorly drained, silty clay loams with mottling. The association is clearly dominated by clumps of 1.5- to 2.5-m tall <i>Salix geyeriana</i> (usually 60-90% cover) with <i>Salix boothii</i> sometimes also present with low to moderate cover. Other willows, such as <i>Salix drummondiana</i>, low shrubs (especially <i>Dasiphora fruticosa ssp. floribunda, Ericameria parryi, Ribes inerme, Ribes lacustre</i>, and/or <i>Rosa woodsii</i>), and trees occasionally occur with low to moderate cover in stands. There is a diverse mixture of mesic forbs (with cover greater than that of mesic graminoids) in the understory, forming multiple height layers. No single species has consistently high cover or constancy. The most common and widespread forbs are <i>Aconitum columbianum, Equisetum arvense, Fragaria virginiana, Geranium</i> spp., <i>Geum macrophyllum, Maianthemum stellatum, Pedicularis groenlandica, Swertia perennis</i>, and <i>Symphyotrichum foliaceum</i>. Other tall forb species, sometimes with moderate cover but lower constancy, include <i>Angelica arguta, Heracleum maximum, Mertensia</i> spp., <i>Polemonium occidentale, Potentilla gracilis, Thalictrum</i> spp., and <i>Urtica dioica</i>. The graminoid layer is poorly developed, tending to be dominated by exotic species with low cover (e.g., <i>Agrostis gigantea, Agrostis stolonifera, Poa pratensis</i>, and <i>Phleum pratense</i>), but also includes native graminoids (most commonly <i>Bromus ciliatus, Calamagrostis canadensis, Carex microptera, Carex utriculata</i>, or <i>Juncus arcticus ssp. littoralis</i>). |
Comm #1466
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Corylus cornuta - Amelanchier spp. - Prunus virginiana Rocky Shrubland
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accession code: urn:lsid:vegbank.org:commConcept:33960-{79A6877F-2261-4743-9D96-D2E09E437703}
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NatureServe Biotics 2019 |
11
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This rocky shrubland is found in the northern Great Lakes region of the United States and Canada. Stands occur on rocky ridges, with thin, acidic soils. The vegetation is dominated by shrubs, with a strong graminoid layer. Dominant shrubs include <i>Amelanchier</i> spp., <i>Corylus cornuta</i>, and <i>Prunus virginiana</i>. Other shrubs include <i>Juniperus communis, Rosa acicularis</i>, and <i>Rhus typhina</i>. Associated herbs include <i>Danthonia spicata, Hieracium</i> spp., and <i>Poa compressa</i>. |
Comm #1467
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Lolium perenne – Centaurium muehlenbergii Semi-natural Association
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accession code: urn:lsid:vegbank.org/vegbranch:commConcept:28881-{BE98D43E-B65F-4996-A073-E3E3B44C0837}
NOT CURRENTLY ACCEPTED
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Northern Sierra Nevada Foothills Report |
11
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Comm #1468
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Calamagrostis canadensis - Eupatorium maculatum Herbaceous Vegetation
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accession code: urn:lsid:vegbank.org:commConcept:33938-{22123D21-020D-4140-B123-E383ABD60BD9}
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NatureServe Biotics 2019 |
11
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Comm #1469
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Vaccinium angustifolium - Sorbus americana / Sibbaldiopsis tridentata Dwarf-shrubland
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accession code: urn:lsid:vegbank.org:commConcept:33859-{A8191175-0831-4D29-852A-5BF7D7C39A9F}
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NatureServe Biotics 2019 |
11
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This northern or high-elevation acidic rock heath barren occurs in the glaciated northeastern states on rocky ridges, outcrops and summits. It includes patches of shrub dominance as well as areas of bedrock-dominated sparse vegetation. The soils are shallow, well-drained, dry, acidic, coarse sands. Expanses of exposed bedrock are typical, with minimal soil development restricted to crevices or shelter areas. Elevations of known examples range from almost sea level on the Maine coast to about 825 m (2700 feet) inland. The physiognomy of this community is patchy and variable, ranging from woodland to shrubland to sparsely vegetated rock. A tree canopy is absent or poorly developed, usually consisting of scattered and stunted trees with less than 10% cover. Tall shrubs are scattered, mostly in somewhat protected areas. Dwarf-shrubs are the most extensive layer, with up to 75% cover. Herbs are sparse and confined to rock crevices and depressions. The bryoid layer varies from sparse to well-developed, with both lichens and mosses represented. Tree species include <i>Picea rubens, Abies balsamea, Quercus rubra, Pinus strobus, Betula papyrifera, Betula populifolia</i>, or <i>Acer rubrum</i>. Scattered tall shrubs include <i>Sorbus americana, Viburnum nudum var. cassinoides, Ilex mucronata, Aronia melanocarpa, Comptonia peregrina</i>, or <i>Amelanchier</i> spp. Prominent dwarf heath shrubs include <i>Vaccinium angustifolium, Vaccinium myrtilloides, Vaccinium pallidum, Gaylussacia baccata, Arctostaphylos uva-ursi</i>, and <i>Kalmia angustifolia</i>. The sparse herb layer includes graminoids such as <i>Deschampsia flexuosa, Danthonia spicata, Carex lucorum, Schizachyrium scoparium</i>, and <i>Piptatheropsis pungens</i>, and the forbs <i>Sibbaldiopsis tridentata, Solidago simplex var. randii, Minuartia glabra, Maianthemum canadense, Gaultheria procumbens, Trientalis borealis</i>, and <i>Pteridium aquilinum</i>. Abundant mosses and lichens form a bryophyte layer characterized by <i>Polytrichum commune, Polytrichum juniperinum, Polytrichum piliferum, Dicranum polysetum</i>, and <i>Cladonia</i> lichens. These heath balds are distinguished by the presence of boreal species such as <i>Sorbus americana</i> and <i>Sibbaldiopsis tridentata</i> combined with temperate species such as <i>Quercus rubra, Quercus montana, Carex pensylvanica, Carex lucorum</i>, and <i>Betula populifolia</i>. They can be floristically similar to ~<i>(Pinus strobus, Quercus rubra) / Danthonia spicata</i> Acidic Bedrock Scrub Grassland (CEGL005101)$$, but those have more (albeit scattered) trees and graminoids more abundant than dwarf-shrubs. |
Comm #1470
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Pinus palustris - Pinus (serotina, taeda) / Sporobolus curtissii - Muhlenbergia expansa Woodland
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accession code: urn:lsid:vegbank.org:commConcept:32931-{C168C0E8-1451-417A-AA50-990FE48BA061}
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NatureServe Biotics 2019 |
11
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This seasonally saturated longleaf pine - pond pine - loblolly pine woodland association is restricted to wet and moist Ultisols of South Carolina. The open canopy of this association is dominated by a combination of <i>Pinus palustris, Pinus serotina</i>, and <i>Pinus taeda</i>. The patchy shrub layer is dominated by <i>Arundinaria tecta, Morella cerifera, Morella caroliniensis, Vaccinium fuscatum, Magnolia virginiana</i>, and <i>Ilex glabra</i>. The ground layer is dominated by <i>Sporobolus curtissii</i>, with <i>Muhlenbergia expansa</i> codominant or of secondary importance. |
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