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Add/Drop	Name	Reference	Plots↓	Description
Comm #12091	Stuckenia pectinata - Zannichellia palustris Herbaceous Vegetation » more details accession code: VB.CC.32331.CEGL002005	Western Ecology Working Group of...	0	This pondweed wetland community is found in the glacial ponds of the Northern Great Plains of the United States and Canada. Stands occur in permanently flooded basins that are 15-100 cm deep, and moderately brackish to brackish. Vegetation is dominated by aquatic macrophytes. In Montana, <i>Zannichellia palustris</i> is dominant in all stands; <i>Stuckenia pectinata (= Potamogeton pectinatus)</i> is present in some stands. The macroalgae <i>Chara</i> sp. may also be present. In North Dakota, <i>Zannichellia palustris, Stuckenia pectinata</i> and <i>Chara</i> share dominance; <i>Ranunculus aquatilis</i> and <i>Myriophyllum sibiricum (= Myriophyllum exalbescens)</i> are secondary species.
Comm #12092	Pleuraphis jamesii Herbaceous Vegetation » more details accession code: VB.CC.32855.CEGL001777	Western Ecology Working Group of...	0	This widespread grassland association is found on alluvial flats, plateau parks, mesas and plains in the Colorado Plateau and elsewhere in the southwestern U.S. Landforms vary from mesatops and slopes to basin floors. Stands may be small woodland parks or more extensive grasslands on the plains. Soils in bottomland stands tend to be fine-textured; however, stands also occur on a variety of substrates. Vegetation is characterized by a relatively sparse to moderately dense (10-60% cover) perennial herbaceous layer that is strongly dominated by the warm-season bunchgrass <i>Pleuraphis jamesii</i>. Low cover of other grasses, such as <i>Achnatherum hymenoides, Bouteloua eriopoda, Bouteloua gracilis, Hesperostipa comata, Muhlenbergia porteri, Sporobolus airoides</i>, or <i>Sporobolus cryptandrus</i>, may be present. Forb cover is usually sparse and includes species of <i>Plantago, Gilia, Lappula</i>, and prickly pear cacti (<i>Opuntia</i> spp.). Many species of shrubs and dwarf-shrubs may be present; however, they are not dense enough to form a shrub layer. Some stands have high cover of cryptogams on the soil surface.
Comm #12093	Muhlenbergia asperifolia Herbaceous Vegetation » more details accession code: VB.CC.33660.CEGL001779	Western Ecology Working Group of...	0	In Colorado, these alkaline meadows are restricted to poorly drained low lands and alkaline soils. Stands are characterized by sparse cover of <i>Muhlenbergia asperifolia</i> and <i>Spartina gracilis</i>. Information on stands that occur outside Colorado will be added later.
Comm #12094	Salix planifolia / Carex utriculata Shrubland » more details accession code: VB.CC.25292.SALIXPLANIFOLIA	Western Ecology Working Group of...	0
Comm #12095	Pinus echinata - Quercus velutina - Quercus stellata / Vaccinium spp. Forest » more details accession code: VB.CC.36830.CEGL002401	Midwestern Ecology Working Group...	0	This shortleaf pine - oak forest is found primarily in the Interior Highlands of the United States, ranging from eastern Oklahoma to the southwestern corner of Illinois. Stands occur on gentle to moderately steep, mid- and upper slopes of hills and plains, especially on southern and western aspects of steep-walled valleys and canyons. Soils are thin, somewhat rapidly to rapidly drained, dry, rocky, and sandy. Bedrock is primarily sandstone and chert, although this forest can also occur on igneous rock, their commonality being acidic pH. Bedrock and rock fragments are often exposed near the surface. The tree canopy is short, spreading, open, and limby. It is dominated by <i>Pinus echinata</i>, which often forms an emergent canopy over a shorter canopy of oaks comprised of various combinations of <i>Quercus stellata, Quercus velutina, Quercus marilandica</i>, and <i>Quercus alba</i>. <i>Carya texana</i> is a common subcanopy component. <i>Vaccinium arboreum</i> and <i>Sassafras albidum</i> are common tall shrubs, while <i>Vaccinium pallidum</i> often dominates the short-shrub stratum. Other characteristic shrubs can include <i>Castanea pumila var. ozarkensis (= Castanea ozarkensis)</i> and <i>Hypericum hypericoides</i>. Woody vines include <i>Smilax glauca</i> and <i>Vitis rotundifolia</i>. The ground cover is sparse and can be dominated by leaf litter with only scattered herbaceous species such as <i>Antennaria plantaginifolia, Baptisia alba var. macrophylla, Baptisia bracteata var. leucophaea, Clitoria mariana, Cunila origanoides, Danthonia spicata, Desmodium nudiflorum, Dichanthelium commutatum, Dichanthelium linearifolium, Elymus hystrix, Helianthus divaricatus, Helianthus hirsutus, Liatris aspera, Pityopsis graminifolia, Schizachyrium scoparium, Solidago odora, Solidago ulmifolia</i>, and <i>Tephrosia virginiana</i>. Numerous lichens and mosses can be found on rocks and stumps.
Comm #12096	Tsuga heterophylla - (Thuja plicata) / Oplopanax horridus / Polystichum munitum Forest » more details accession code: VB.CC.19466.TSUGAHETEROPHYL	Western Ecology Working Group of...	0
Comm #12097	Pinus echinata / Rock Outcrop Interior Highland Woodland » more details accession code: VB.CC.36827.CEGL002402	Midwestern Ecology Working Group...	0	This shortleaf pine rock outcrop woodland type is found in the Interior Highlands region of the United States. Stands occur on shallow rocky soils, especially on south-facing slopes and cliffs. Characteristic tree species include <i>Pinus echinata, Juniperus virginiana var. virginiana, Quercus marilandica</i> and <i>Quercus stellata</i>. Shrubs and vines include <i>Toxicodendron radicans</i> and <i>Vaccinium pallidum</i>. Herbaceous species include <i>Antennaria parlinii</i> and <i>Danthonia spicata</i>. This community type has been much reduced in extent.
Comm #12098	Carex buxbaumii Herbaceous Vegetation » more details accession code: VB.CC.34038.CEGL001806	Western Ecology Working Group of...	0	This vegetation has been found in fens and wet meadows in the mountains of Utah, Idaho, Montana, and western Wyoming at elevations 1700-3200 m. Sites are flat and range from moderately broad valley bottoms to forest openings. Size of wetland is dependent on the presence of permanently saturated soils and it often occurs along streams and in the wettest portion of the wetland complex. Soils are mineral from alluvium with accumulations of well-decomposed organic matter throughout the upper soil horizon (20-50 cm deep). Stands have a dense perennial graminoid layer characterized by 25% or more cover of <i>Carex buxbaumii</i>. <i>Carex aquatilis, Carex saxatilis</i> and <i>Carex utriculata</i> are usually present and occasionally codominant. Other common species include <i>Deschampsia caespitosa, Caltha leptosepala, Pedicularis groenlandica</i>, and <i>Ligusticum tenuifolium</i>. Occasional shrubs such as <i>Salix planifolia (= Salix phylicifolia), Vaccinium uliginosum (= Vaccinium occidentale)</i>, and <i>Dasiphora fruticosa ssp. floribunda (= Pentaphylloides floribunda)</i> may be scattered in the stand. Adjacent stands are often dominated by sedges such as <i>Carex utriculata</i> and <i>Carex aquatilis</i>. This vegetation is separated from adjacent wetlands by the dominance or codominance of <i>Carex buxbaumii</i>.
Comm #12099	Carex siccata - Geum rossii Herbaceous Vegetation » more details accession code: VB.CC.34001.CEGL001808	Western Ecology Working Group of...	0	This southern Rocky Mountain association is found in upper subalpine and lower alpine environments. Sites are typically dry meadows and alpine turf near treeline, often occurring on stabilized fine talus slopes (5-35%). Snowmelt is relatively early, and sites are relatively dry and warm. Substrates are shallow, well-drained, loamy-skeletal soils. Vegetation is characterized by a moderately dense to dense (&gt;50% cover) herbaceous layer dominated by <i>Carex siccata (= Carex foenea)</i> often with <i>Geum rossii</i> codominant. Other important species with lower cover include graminoids <i>Carex heteroneura var. chalciolepis, Deschampsia caespitosa, Elymus trachycaulus, Festuca idahoensis, Trisetum spicatum</i>, and forbs <i>Achillea millefolium, Artemisia scopulorum, Cerastium arvense, Arenaria fendleri (= Eremogone fendleri), Poa alpina, Potentilla diversifolia, Solidago simplex var. nana</i>, and <i>Trifolium parryi</i>. Stands often occur in patches between wooded areas. <i>Carex siccata</i> commonly occurs as the herbaceous layer in coniferous associations of <i>Abies lasiocarpa, Pinus contorta</i>, and <i>Picea engelmannii</i>.
Comm #12100	Carex limosa Herbaceous Vegetation » more details accession code: VB.CC.33916.CEGL001811	Western Ecology Working Group of...	0	This association is currently reported from the Rocky Mountains west into Utah, California and Washington at mid to high elevations. Stands occur in some of the wettest sites in fens that have formed in glacial kettles, on pond margins, along low-gradient lake inlets or outlets, in association with springs in broad valleys. Soils are typically highly organic and composed of deep fibric peat, with very little decomposition because of saturated conditions. Vegetation is characterized by the dominance of <i>Carex limosa</i> with 50% or greater cover (often occurring as a near monoculture) and may occur as a floating mat. Several other species that are adapted to nutrient-poor conditions, including <i>Drosera</i> spp., <i>Eriophorum</i> spp., <i>Menyanthes trifoliata</i>, and <i>Trichophorum caespitosum (= Scirpus cespitosus)</i>, are sometimes present. In addition, <i>Carex aquatilis, Carex rostrata, Carex utriculata</i>, and <i>Comarum palustre (= Potentilla palustris)</i> may be present. A dense layer of moss that often includes <i>Sphagnum</i> spp. occurs in some stands, and some stands may be codominated by <i>Eleocharis quinqueflora</i> or <i>Carex aquatilis</i>.