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Name
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Reference
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Plots↓
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Description |
Comm #701
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Encelia farinosa Shrubland Alliance
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accession code: VB.cc.30672.ENCELIAFARINOSA
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NVC 2004 |
27
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Comm #702
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Unvegetated
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accession code: VB.cc.30585.UNVEGETATED
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NVC 2004 |
27
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Comm #703
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PSEUDOTSUGA MENZIESII WOODLAND ALLIANCE
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accession code: VB.CC.8259.PSEUDOTSUGAMENZ
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Jennings 2003. Vegetation alliances: composition and function. |
27
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Comm #704
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Tsuga canadensis - Quercus montana - Betula lenta Forest
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accession code: urn:lsid:vegbank.org:commConcept:35300-{9014ABC9-3580-4CC3-9FF6-81432452A61D}
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NatureServe Biotics 2019 |
27
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This association is a hemlock - chestnut oak forest which often occurs on steep northeastern to northwestern exposures. It ranges from the New Jersey Highlands south to the Blue Ridge, Ridge and Valley, Allegheny Mountains, Western Allegheny Plateau, and Piedmont provinces of Maryland and West Virginia. Stands occur at elevations from 150 m to about 920 m (500-3010 feet) on moderately to very steep, sheltered slopes. Northerly aspects and middle slope positions prevail among documented examples. Some sites are "boulderfields" with up to 60% cover by large rocks. Geologic substrate is variable. Soils are usually very stony to extremely stony sandy loams, consistently oligotrophic, with very low pH and base status. Stands of this association are typically floristically depauperate and generally dominated by variable combinations of <i>Quercus montana</i> and <i>Tsuga canadensis</i>. <i>Betula lenta</i> and, less commonly, <i>Quercus velutina, Quercus coccinea</i>, and <i>Quercus rubra</i> are major overstory associates, each attaining codominance in a subset of stands. <i>Quercus alba, Acer rubrum, Liriodendron tulipifera, Pinus strobus, Sassafras albidum</i>, and <i>Fagus grandifolia</i> are minor overstory associates. Small trees and shrubs can be absent or sparse due to dense shading by hemlock, with <i>Hamamelis virginiana</i> most consistently providing moderate cover. Less frequently, <i>Kalmia latifolia, Rhododendron maximum</i>, and <i>Viburnum acerifolium</i> are shrub components. At some New Jersey sites, a single dense stratum or multiple open strata of ericaceous species can develop, including <i>Rhododendron maximum, Kalmia latifolia, Gaylussacia baccata</i>, and <i>Vaccinium pallidum</i>. The herb layer of this community is typically very sparse or absent; typical scattered species include <i>Maianthemum canadense, Dennstaedtia punctilobula, Chimaphila maculata, Deschampsia flexuosa, Carex swanii</i>, and <i>Aralia nudicaulis</i>. |
Comm #705
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Quercus wislizeni – Pinus sabiniana / annual grass – herb Association
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accession code: urn:lsid:vegbank.org/vegbranch:commConcept:28630-{BCD0DB41-04E6-4744-A3C3-CCA4CF86C5FE}
NOT CURRENTLY ACCEPTED
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MCV2 |
27
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Comm #706
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Salix wolfii / Mesic Forbs Wet Shrubland
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accession code: urn:lsid:vegbank.org:commConcept:30149-{EAF8CE8E-AF15-4939-99D5-3D17FC2247CF}
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NatureServe Biotics 2019 |
27
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This plant association occurs from mid-montane to upper subalpine elevations of 1890-3355 m (6200-11,000 feet) in Colorado, Idaho, western Wyoming, and Utah. It frequently covers wide, open, low-gradient areas near first- and second-order streams. It can be recognized by the generally dense layer of low-growing, silvery <i>Salix wolfii</i> dominating the short-shrub layer, with a variety of mesic forbs and some graminoids in the undergrowth. Other willow species that may be present include <i>Salix planifolia, Salix boothii</i>, and <i>Salix geyeriana</i>. Additional short shrubs that are often present include <i>Dasiphora fruticosa ssp. floribunda, Betula glandulosa, Ribes inerme</i>, and <i>Lonicera involucrata</i>. Total forb cover exceeds that of total graminoid cover. No single forb species is particularly more abundant than any other, and no one species is present in every stand. The forb species most commonly present include <i>Caltha leptosepala, Mertensia ciliata, Senecio triangularis, Ligusticum porteri, Fragaria virginiana, Cardamine cordifolia, Geum macrophyllum, Saxifraga odontoloma</i>, and <i>Heracleum maximum</i>. Graminoid species that may be present include <i>Deschampsia cespitosa, Calamagrostis canadensis</i>, and various <i>Carex</i> species. |
Comm #707
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Schizachyrium scoparium - Bouteloua (curtipendula, gracilis) - Carex filifolia Grassland
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accession code: urn:lsid:vegbank.org:commConcept:30590-{00120093-59C3-4572-A358-FD0280A891BE}
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NatureServe Biotics 2019 |
27
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This little bluestem - mixedgrass prairie type is distributed throughout the northern Great Plains of the United States and Canada. Stands are usually found on moderate to steep slopes with variable aspects. The soils are typically shallow and occur over sandstone or limestone. The vegetation is predominantly composed of graminoid species less than 1 m tall with moderate to high cover. The dominant species is <i>Schizachyrium scoparium</i> with <i>Bouteloua curtipendula, Bouteloua gracilis</i>, and <i>Carex filifolia</i> as associates or codominants. <i>Andropogon gerardii, Carex inops ssp. heliophila, Carex duriuscula, Koeleria macrantha</i>, and <i>Calamovilfa longifolia</i> are often present. <i>Calamovilfa longifolia</i> may be abundant on sandier soils. <i>Muhlenbergia cuspidata, Hesperostipa comata, Pascopyrum smithii</i>, and <i>Nassella viridula</i> may also be present. Forbs do not contribute greatly to the canopy, but many species may be found in this community. Among the forbs that may be found are <i>Echinacea angustifolia, Symphyotrichum oblongifolium, Gaura coccinea, Lygodesmia juncea, Helianthus pauciflorus ssp. pauciflorus, Rosa arkansana, Liatris punctata, Pediomelum argophyllum, Symphyotrichum ericoides, Dalea purpurea</i>, and <i>Campanula rotundifolia</i>. |
Comm #708
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Populus tremuloides / Heracleum maximum Forest
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accession code: urn:lsid:vegbank.org:commConcept:29504-{2A9A9F44-B032-4648-8A97-AF14513E6BB9}
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NatureServe Biotics 2019 |
27
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This association has been extensively documented from the East Front of the Rocky Mountains of Montana and into Alberta, on sites ranging from 1290-1750 m (4200-5750 feet). It occurs as small- to large-patch types in narrow mountain valleys, glacial moraine depressions underlain by clay lenses and often filled with loessal soils, lee slope position also having deep loess deposits, springs or seeps on hillslopes, and as a fringe about glacial kettle lakes. The overstory is dominated by <i>Populus tremuloides</i> with an occasional <i>Populus balsamifera ssp. trichocarpa</i> and seedling/saplings of several conifer species scattered and showing little potential to eventually dominate. The dominant aspect of the undergrowth is that of a rich assortment of tall forbs, but occasionally <i>Symphoricarpos albus</i> comprises a conspicuous layer below the forbs. Forbs both diagnostic and usually dominant in various combinations include <i>Osmorhiza occidentalis, Angelica arguta</i> (or <i>Angelica dawsonii</i>), <i>Heracleum maximum, Geranium richardsonii, Viola canadensis, Veratrum viride, Galium triflorum</i>, and <i>Actaea rubra</i>. Among the tall graminoids, <i>Elymus glaucus</i> often has the greatest canopy cover and highest constancy; others include <i>Bromus carinatus, Calamagrostis canadensis, Schizachne purpurascens</i>, and <i>Cinna latifolia</i>. This type appears to be a self-perpetuating community as inferred by tree population age-class structure. Charcoal has not been found in the soil of these sites which indicates a lack of fire and points to long-term site occupancy by <i>Populus tremuloides</i> in a landscape where the prevailing model of succession predicts (erroneously) these sites to be eventually dominated by conifers. Conifers establish, if at all, at a glacial rate. This association is considered premier grizzly bear habitat in the spring and early summer and excellent wildlife habitat in general. |
Comm #709
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Cardamine cordifolia - Mertensia ciliata - Senecio triangularis Wet Meadow
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accession code: urn:lsid:vegbank.org:commConcept:31570-{E47BBD17-4EF0-41D0-80F9-0A6894E165D5}
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NatureServe Biotics 2019 |
27
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This southern Rocky Mountain association occurs in alpine and subalpine wetlands from 2700-3800 m (9000-12,300 feet) elevation. The generally small stands of this plant association are found in and near running water of small streams, seeps and springs. This association typically occurs along moderately steep to very steep first-order streams. In many cases this habitat probably experiences a long period of snow cover. Substrates are moderately deep (40 cm) sandy clay loam and sand-textured soils but, in general, are quite thin and skeletal. Associated taxa may vary greatly with this plant association, but the dominance of <i>Cardamine cordifolia, Mertensia ciliata</i>, and/or <i>Senecio triangularis</i> is clear. All of these species may be present or only one of the three. |
Comm #710
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Asplenium montanum - Heuchera villosa Felsic Cliff Vegetation
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accession code: urn:lsid:vegbank.org:commConcept:33748-{C73D29A3-7379-472E-80A2-48984D70B5E3}
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NatureServe Biotics 2019 |
27
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This community occurs in the Blue Ridge and upper Piedmont of Georgia, North Carolina, South Carolina, Tennessee, and Virginia. It includes vertical rock faces associated with felsic, metamorphic and igneous geologies. This community generally has little vegetative cover, often with 90% of the rock surface unvegetated. Mosses (e.g., <i>Thuidium</i> spp., <i>Fissidens</i> spp., <i>Campylium</i> sp., <i>Bryoandersonia</i> sp., <i>Plagiomnium</i> sp.) and lichens can have moderate coverage, and vascular plants occur on ledges and rooted in cracks. <i>Asplenium montanum</i> and <i>Heuchera villosa</i> are characteristic components. Other typical species include <i>Agrostis perennans, Arisaema triphyllum, Aristolochia macrophylla, Asplenium trichomanes, Eurybia divaricata, Cystopteris protrusa, Dryopteris marginalis, Hydrangea arborescens, Parthenocissus quinquefolia, Polypodium appalachianum</i>, and <i>Rubus canadensis</i>. These cliffs are typically dry, although small seepages may occur. They are usually shaded by trees rooted on ledges and by the surrounding forest. |
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