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Add/Drop	Name	Reference	Plots↓	Description
Comm #6081	Pseudotsuga menziesii / Clintonia uniflora - Xerophyllum tenax Forest » more details accession code: VB.CC.28318.PSEUDOTSUGAMENZ	Western Ecology Working Group of...	0	This is a seral, mesic, large-patch to matrix type found in the foothills and montane to lower and even mid-subalpine, relatively cold and dry environments throughout the northern Rocky Mountains and may extend as far west as the Cascade Crest. The associations' possible elevation range is from 915 to 1800 m (3000-5900 feet), and regardless of the climax series in which it is found, it consistently occurs on south- through west-facing exposures. The range of parent materials is, with the exception of highly unusual substrates like serpentine, literally as great as possible types occurring in the northern Rocky Mountains and northernmost middle Rocky Mountains and may include some ultramafics east of the Cascade Crest. It is difficult to characterize the soils as well, but they are uniformly well-drained and have a low coarse-fragment content, except those sites within the lower to mid-subalpine zone. The overstory is dominated by Pseudotsuga menziesii with a whole host of tree species capable of playing a subordinate role; on warmer sites these include Thuja plicata, Tsuga heterophylla, Abies grandis, and on colder or higher elevation sites are found Abies lasiocarpa, Tsuga mertensiana, and Picea engelmannii. However, the most frequent canopy codominants or associates are the seral species Larix occidentalis, Pinus contorta, and in a restricted portion of the type's range, Pinus monticola. The tall-shrub component is relatively unimportant, only Alnus viridis ssp. sinuata and Amelanchier alnifolia approach 50% constancy (and have low cover values). The short-shrub layer exhibits greater cover and diversity than the other shrub components with Vaccinium membranaceum, Paxistima myrsinites, Rosa gymnocarpa, Rubus parviflorus, and Spiraea betulifolia being consistently present. Linnaea borealis and Chimaphila umbellata have high constancy in the dwarf-shrub layer. Bromus vulgaris (or Bromus ciliatus) are the only graminoids of note. The diagnostic forbs Clintonia uniflora, Xerophyllum tenax, and Tiarella trifoliata naturally have high constancy and/or cover, however, a number of other forbs also exhibit high constancy, including Arnica latifolia, Aralia nudicaulis, Adenocaulon bicolor, Coptis occidentalis, Cornus canadensis, Galium triflorum, Goodyera oblongifolia, Maianthemum stellatum, Osmorhiza berteroi (= Osmorhiza chilensis), Pedicularis racemosa, Orthilia secunda (= Pyrola secunda), Thalictrum occidentale, Trillium ovatum, and Viola orbiculata.
Comm #6082	CEGL002285 » more details accession code: VB.CC.4795.CEGL002285 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #6083	CEGL000068 » more details accession code: VB.CC.2696.CEGL000068 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #6084	CEGL000069 » more details accession code: VB.CC.2697.CEGL000069 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #6085	Eriophorum chamissonis / Sphagnum spp. Herbaceous Vegetation » more details accession code: VB.CC.34164.CEGL003333	Western Ecology Working Group of...	0	From Kunze (1994): This community type is uncommon in the northern Puget Trough lowlands of Washington. It occurs on very thin layers of floating sphagnum that give way when stepped on. The water level is at or slightly above the substrate surface. It occurs in depressions or around the pond margins of bogs. This community type is dominated by <i>Eriophorum chamissonis</i> and <i>Sphagnum</i> spp. and has few other associated species, but may include <i>Carex pauciflora, Rhynchospora alba</i>, and <i>Vaccinium oxycoccos</i>.
Comm #6086	Ledum groenlandicum - Myrica gale / Sphagnum spp. Shrubland » more details accession code: VB.CC.33456.CEGL003335	Western Ecology Working Group of...	0
Comm #6087	V.B.2.C.x » more details accession code: VB.CC.504.VB2CX	EcoArt 2002	0
Comm #6088	CEGL000070 » more details accession code: VB.CC.2698.CEGL000070 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #6089	CEGL000071 » more details accession code: VB.CC.2699.CEGL000071 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #6090	Abies lasiocarpa - Picea engelmannii / Xerophyllum tenax - Luzula glabrata var. hitchcockii Woodland » more details accession code: VB.CC.32240.CEGL005898	Western Ecology Working Group of...	0	This association is broadly distributed throughout the mid to upper subalpine zones of the northern Rocky Mountains, concentrated in northern Idaho and western Montana and extending into the Canadian Rockies of southwestern Alberta. The demonstrated elevation range is from 1555 to 2135 m in the northern portion of its distribution and 1740 to 2380 m in its southern occurrence. It is strongly associated with moderate to steep warm slopes, usually having a southeast- through south- to west-facing exposure, usually occurring from midslopes upwards to slope shoulders and occasionally extending to high-elevation benchlands as well. It is characterized by having relatively heavy snowpack that persists well into the growing season. These sites have well-drained soils derived from a host of parent materials, including volcanics (granitics, andesite, rhyolite) sedimentaries (limestone, dolomite, siltstone), metamorphics (quartzite, argillite, gneiss, mica-schist) and metasediments. The range in soil surface texture is broad, from silty clays to sandy loams with the gravel content averaging about 30% near the surface and increasing markedly with depth. These are very open woodland sites with the tree component often occurring as scattered clumps and, at the highest and coldest extremes, approaching a krummholz form with trees as short as 5.5 m (18 feet) in height when mature. The canopy is generally strongly dominated by <i>Abies lasiocarpa</i> followed distantly in order of decreasing average cover by <i>Pinus albicaulis, Pinus contorta</i>, and <i>Picea engelmannii</i> (this order may change slightly by region and is undoubtedly due to differences in type and severity of disturbance). The undergrowth component is species-poor. Tall shrubs are virtually unrepresented, and the short shrubs <i>Vaccinium membranaceum</i> and <i>Lonicera utahensis</i> have high constancy but only the former has coverage exceeding 5%. The dwarf-shrub component has only two constant species, <i>Vaccinium scoparium</i> and <i>Vaccinium myrtillus</i>, only one of which exhibits high cover in a given location; <i>Phyllodoce empetriformis</i> may be a conspicuous component but its presence is very inconsistent. The graminoid component is singularly dominated by <i>Luzula glabrata</i> with a cover of 5 to 20% (extremes to 50 or 60%, where <i>Xerophyllum tenax</i> cover is low); <i>Carex geyeri</i> is a common component only in central Idaho representation of the type. <i>Xerophyllum tenax</i> is almost invariably the dominant herb, joined by a number of other forbs, none of which express high constancy.