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Description |
Comm #10071
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Pinus contorta / Clintonia uniflora Forest » more details
accession code: VB.CC.32160.CEGL005916
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Western Ecology Working Group of... |
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Broadly distributed throughout the northern Rocky Mountains and adjacent terrain, this large-patch to matrix seral lodgepole pine forest association occupies relatively moist (mesic) and warm to cool sites having free air drainage and lacking frost-pocket conditions. It occurs on slopes of all degrees of steepness and aspect orientation, though it is more likely to occur in predominantly collecting positions. At the dry extreme of its distribution it is more strongly associated with protected positions such as concave slopes, moist depressions in gently sloping plateau areas, stringers along perennial stream bottoms, toeslopes and northeastern aspects. In the north it ranges from 760 to 1585 m (450-5200 feet), whereas to the south it ranges from 1060 to 1710 m (3500-5600 feet). A wide variety of parent materials are represented including those as disparate as granite, limestone, and all manner of glacio-fluvial material. It is also routinely found on ash caps, ranging from 3 to 60 cm in depth. The soil textures are predominantly loams and silt loams; soils typically have less than 15% coarse-fragment content and are well-drained. This mesic, wholly seral association is characterized by <i>Pinus contorta</i> dominating the upper canopy. Other tree species do occur in the overstory but with much less cover, including the seral <i>Larix occidentalis</i> and <i>Pinus monticola</i> as well as those from warmer environments: <i>Pinus ponderosa, Pseudotsuga menziesii, Thuja plicata</i>, and <i>Tsuga heterophylla</i>, and those of colder environments: <i>Abies lasiocarpa, Abies grandis</i>, and <i>Picea engelmannii</i>. The shrub layer may be highly diverse with tall shrubs (e.g., <i>Acer glabrum, Taxus brevifolia, Amelanchier alnifolia</i>), short shrubs (<i>Symphoricarpos albus, Paxistima myrsinites, Rubus parviflorus, Spiraea betulifolia</i>), and dwarf-shrubs (e.g., <i>Chimaphila umbellata, Linnaea borealis, Mahonia repens</i>) abundantly represented. The graminoid component is inconspicuous. The cover of the diagnostic forbs <i>Clintonia uniflora</i> and <i>Tiarella trifoliata</i> is greatest when this type occurs in warmer environments, up to 30% canopy cover. In the colder environments cover of these diagnostics and all forbs is generally less. Other forbs of high constancy are <i>Aralia nudicaulis, Adenocaulon bicolor, Coptis occidentalis, Cornus canadensis, Galium triflorum, Goodyera oblongifolia, Maianthemum stellatum, Osmorhiza berteroi (= Osmorhiza chilensis), Orthilia secunda (= Pyrola secunda), Thalictrum occidentale, Trillium ovatum, Viola glabella</i> (or <i>Viola canadensis</i>), and <i>Viola orbiculata</i>. |
Comm #10072
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Bothriochloa pertusa Ruderal Herbaceous Vegetation » more details
accession code: urn:lsid:vegbank.org:commConcept:33664-{6C27E5A9-9C81-4095-97B5-261B15B93693}
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NatureServe Biotics 2019 |
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Littoral grasslands dominated by introduced <i>Bothriochloa pertusa</i>, with scattered shrubs of <i>Capparis flexuosa, Lantana involucrata, Rauvolfia nitida, Coccoloba uvifera</i>, and <i>Sesuvium portulacastrum</i>. Known from Reserva Natural Cabezas de San Juan, Puerto Rico. |
Comm #10073
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Fimbristylis thermalis Herbaceous Vegetation » more details
accession code: urn:lsid:vegbank.org:commConcept:33665-{E5DEBCE6-1925-40B6-A46A-D0E91604CE01}
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NatureServe Biotics 2019 |
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Comm #10074
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Sesuvium portulacastrum Herbaceous Vegetation » more details
accession code: urn:lsid:vegbank.org:commConcept:33666-{4DCD206E-299A-44FB-9469-FB97227CC131}
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NatureServe Biotics 2019 |
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Comm #10075
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Colocasia esculenta - Cyperus spp. Ruderal Herbaceous Vegetation » more details
accession code: urn:lsid:vegbank.org:commConcept:33667-{DFD0938B-0765-48DD-AD63-BAC3808DD456}
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NatureServe Biotics 2019 |
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This vegetation occurs in disturbed wetland areas. Stands are dominated by <i>Colocasia esculenta</i>, with <i>Cyperus</i> spp. |
Comm #10076
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Abies lasiocarpa - Picea engelmannii / Menziesia ferruginea / Xerophyllum tenax Forest » more details
accession code: VB.CC.28266.ABIESLASIOCARPA
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Western Ecology Working Group of... |
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This association occurs throughout the middle to northern Rocky Mountains and on into the Canadian Rockies as a small- to large-patch type from mid to upper subalpine habitats. In the southerly portions of its distribution, the Wallowa and Seven Devils mountains and Idaho Batholith, it faithfully occupies moderate to steep slopes of northerly aspects at elevations ranging from 5600 to 7500 feet, but dropping to 4500 feet where frost pocket conditions obtain. Further to the north it also occurs predominantly on northerly exposures, but at higher elevations in wetter climates, it may be found on southerly exposures. It can occur on a given slope from the toe, up the backslope to the slope shoulder, and in wetter climates is found on ridgetops as well. It is perhaps most widely distributed in western Montana where individual stands may comprise hundreds to thousands of acres. It exhibits no particular substrate preferences being found on granitics, fine-grained sedimentaries (including argillite and limestone), metasediments, and mica-schist; volcanic ash caps of varying depths (to 50 cm thickness) are very prevalent in the southern and western portions. The predominant soil texture is silt loam, and soils are uniformly well-drained. Rock content of surface horizons ranges from about 15% to over 50%. This is a closed forest type for the most part with total upper canopy cover ranging upward from 60%. A variable mix of Abies lasiocarpa and Picea engelmannii dominates the canopy as well as the regeneration layers. Seral tree species do poorly on these sites; Pinus contorta, Pseudotsuga menziesii, and Larix occidentalis are the only tree species consistently present and seldom is their canopy cover as great as 20%. The modal condition for the undergrowth varies with geographic region. Menziesia ferruginea consistently dominates the tall-shrub layer, which may also have Alnus viridis ssp. sinuata as a conspicuous component. In all parts of the type's range Vaccinium membranaceum is the mid (short) shrub dominant with coverages generally upwards of 30%; it is usually accompanied by low cover of Ribes lacustre and the somewhat shorter dwarf-shrub Vaccinium scoparium (or its ecological analogue Vaccinium myrtillus). The only graminoid consistently present, Luzula glabrata, occurs in slightly greater than trace amounts in stands at higher elevations and experiencing deeper snowpack. The herb layer, depauperate in comparison to that of Abies lasiocarpa - Picea engelmannii / Menziesia ferruginea / Clintonia uniflora Forest (CEGL005893), is strongly dominated by Xerophyllum tenax; Arnica cordifolia, Arnica latifolia, Goodyera oblongifolia, Viola orbiculata, and Orthilia secunda are the only forbs approaching or exceeding 50% constancy. |
Comm #10077
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Abies lasiocarpa - Picea engelmannii / Arnica latifolia Forest » more details
accession code: VB.CC.32061.CEGL000299
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Western Ecology Working Group of... |
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This association is known from eastern Idaho, western Wyoming and northern Utah. It is dense forest canopy with low cover of shrub and herbaceous layers. It occurs on gentle to moderate terrain on all aspects, from 2255-2835 m (7400-9300 feet) elevation. Soils are from a wide range of parent materials and range from well-drained sandy clay loams to moderately well-drained silty clays. <i>Abies lasiocarpa</i> and <i>Picea engelmannii</i> codominant this forested association. <i>Pseudotsuga menziesii, Pinus contorta</i>, and <i>Pinus albicaulis</i> may be present. The shrub layer may have <i>Ribes montigenum</i> and <i>Paxistima myrsinites</i>, which can be common and occasionally dominates the undergrowth. <i>Arnica latifolia</i> dominates the forb layer that may include <i>Eucephalus engelmannii (= Aster engelmannii)</i> and <i>Pedicularis racemosa</i>. <i>Arnica latifolia</i> can be difficult to distinguish from <i>Arnica cordifolia</i>. The leaves on flowering stems of <i>Arnica latifolia</i> are largest toward the middle and are short-petioled to sessile, whereas those of <i>Arnica cordifolia</i> are largest near the base and are distinctly petiolate. <i>Arnica latifolia</i> is restricted to relatively moist sites; <i>Arnica cordifolia</i> occurs on many dry forest sites. |
Comm #10078
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Abies lasiocarpa - Picea engelmannii / Calamagrostis rubescens Forest » more details
accession code: VB.CC.32055.CEGL000301
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Western Ecology Working Group of... |
0
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This association is known from northeastern Oregon and central and eastern Washington, Idaho, northern Utah, northwestern Wyoming to east of the Continental Divide in Montana. This forest is often on moderate to steep slopes and ranges in elevation from 1372 to 1800 m (4500-5900 feet) in Oregon and Washington, and from 1768 to 2590 m (5800-8500 feet) in the Rocky Mountains. Soils are skeletal and range from silts to loams. This association is a montane forested community in cool and dry areas in the western part of its range, and in mesic areas in the northern and eastern portion of its range. <i>Abies lasiocarpa</i> is the dominant overstory tree, often with <i>Picea engelmannii</i>. <i>Pinus contorta</i> and <i>Pseudotsuga menziesii</i> are often codominant to more abundant than <i>Abies</i>. In Washington and Oregon, <i>Larix occidentalis</i> and <i>Abies grandis</i> may also be present. The shrub layer is minor. <i>Paxistima myrsinites</i> is most often present and can have as much as 15% cover. The herbaceous layer is generally described as a mat or sward of <i>Calamagrostis rubescens</i>, with 40-50% cover. <i>Carex geyeri</i> can be present and abundant. Other forbs commonly present include <i>Arnica cordifolia, Thalictrum occidentale, Osmorhiza berteroi (= Osmorhiza chilensis), Orthilia secunda (= Pyrola secunda), Arnica latifolia</i>, and <i>Carex rossii</i>. Where <i>Calamagrostis rubescens</i> is less than 5% cover and <i>Carex geyeri</i> is 5% and greater, the stand represents <i>~Abies lasiocarpa - Picea engelmannii / Carex geyeri</i> Forest (CEGL000304)$$. |
Comm #10079
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A.191 » more details
accession code: VB.CC.1610.A191
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #10080
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Pinus edulis / Purshia tridentata Woodland » more details
accession code: VB.CC.23864.PINUSEDULISPURS
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Western Ecology Working Group of... |
0
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