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Add/Drop	Name	Reference	Plots↓	Description
Comm #7601	Pinus ponderosa / Wyethia mollis Woodland » more details accession code: VB.CC.33051.CEGL000206	Western Ecology Working Group of...	0	This is an open woodland found in the eastern Cascades ecoregion in south-central Oregon. This association occurs at elevations between 1525 and 1950 m (5000-6400 feet) in eastern Oregon. Slopes vary from 5-40%. Sites are usually on convex topography over andesite, basalt, or rhyolite. Soils are gravelly silt loams to gravelly clay, and are well-drained. <i>Pinus ponderosa</i> is the major tree cover, varying from 5-50%. <i>Abies concolor</i> often occurs at the upper elevational phases of this association but remains <10% cover. <i>Juniperus occidentalis</i> may occur at <10% cover. <i>Wyethia mollis</i> occurs at <30% cover except in recently disturbed sites where it may be over 50% cover. Other shrubs usually found are <i>Purshia tridentata</i> and <i>Amelanchier alnifolia</i> usually exist at low cover values. <i>Achillea millefolium</i> is usually found up to 10% cover. A number of other forbs and grasses can be found. No single grass species (<i>Elymus elymoides</i> and <i>Poa nervosa</i>) covers more than 10%.
Comm #7602	CEGL000762 » more details accession code: VB.CC.3366.CEGL000762 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #7603	Abies amabilis / Lysichiton americanus Forest » more details accession code: VB.CC.33337.CEGL000223	Western Ecology Working Group of...	0	This association occurs in the Olympic Mountains and northwestern Cascade Range in Washington and extends north into the coastal mountains of British Columbia. This is a needle-leaved evergreen conifer forest dominated by <i>Tsuga heterophylla, Abies amabilis</i>, and <i>Thuja plicata</i>. <i>Picea sitchensis</i> can be present in small amounts. The understory has a moderately dense to open deciduous broad-leaved shrub layer about 0.7-2.5 m tall, with <i>Vaccinium ovalifolium, Oplopanax horridus</i>, and <i>Rubus spectabilis</i> being the major species. <i>Menziesia ferruginea</i> is frequent in small amounts, and the evergreen shrub <i>Gaultheria shallon</i> is important in the Olympic Mountains. The herbaceous layer is well-developed and typically dominated by <i>Lysichiton americanus</i>. Many other forbs and ferns may occur, especially <i>Clintonia uniflora, Blechnum spicant, Rubus pedatus, Streptopus lanceolatus var. curvipes (= Streptopus roseus), Maianthemum dilatatum, Athyrium filix-femina</i>, and <i>Cornus unalaschkensis</i>. Sites are found primarily at 250-900 m elevation in Washington, at 650-1350 m in southern British Columbia and from near sea level to 700 m in central British Columbia. These are moist, cool climatic zones where snowpack is moderate. Soils are saturated and typically organic. This association is distinguished from similar associations by at least 5% cover of <i>Lysichiton americanus</i> and 10% cover of <i>Abies amabilis</i>, along with little to no <i>Tsuga mertensiana</i> (no more than 10% cover).
Comm #7604	Pinus ponderosa - Pseudotsuga menziesii / Purshia tridentata Woodland » more details accession code: VB.CC.32889.CEGL000214	Western Ecology Working Group of...	0	This dry woodland association is documented from stands growing on hills and mountains on the eastern slope of the Cascade Range in Washington and on high plateaus in the northern Colorado Plateau of Utah. Stands occur on warm, well-drained sites on upper slopes, shoulders and ridgetops with poor soils, and often with much bedrock exposure. A few stands occur on well-drained outwash deposits in valley bottoms. Sites are moderately steep (7- to 16-degree slopes), occasionally greater than 50%. Elevations range between 610 and 1465 m (2000-4800 feet) in Washington but are close to 2745 m (9000 feet) in Utah. Soils are shallow, stony, rapidly drained sandy loams and loamy sands derived from colluvium, alluvium or granitic till. Total vegetation cover ranges from 10 to 60%, but in general stands are relatively sparsely vegetated. The canopy is open (less than 40% cover) and consists of a mix of <i>Pinus ponderosa</i> and <i>Pseudotsuga menziesii</i>, occasionally with scattered <i>Pinus contorta</i>. The sparse subcanopy may also contain <i>Pinus edulis</i> and <i>Juniperus scopulorum</i>. Shrubs form a discontinuous, patchy layer dominated by <i>Purshia tridentata</i>. Associated shrubs include <i>Artemisia nova, Arctostaphylos uva-ursi, Mahonia repens, Amelanchier</i> spp., <i>Ceanothus velutinus, Spiraea betulifolia</i>, and <i>Symphoricarpos oreophilus</i>. The herbaceous layer is typically sparse, rarely with more than 10% total cover. Documented species include <i>Achillea millefolium, Balsamorhiza sagittata, Carex geyeri, Elymus elymoides, Lomatium triternatum, Apocynum androsaemifolium, Packera multilobata (= Senecio multilobatus), Phlox austromontana</i>, and <i>Poa fendleriana</i>.
Comm #7605	A.366 » more details accession code: VB.CC.2041.A366 NOT CURRENTLY ACCEPTED	EcoArt 2002	0	This alliance consists of forests known as 'tropical bayhead forests' and 'wet tropical hammocks,' occurring in seasonally flooded situations in southern Florida. They characteristically have a mixture of tropical and temperate species. ~Taxodium distichum, Persea palustris$, and ~Chrysobalanus icaco$ are characteristic. Other typical canopy and subcanopy species that are not present in all associations include ~Acer rubrum var. rubrum, Annona glabra, Celtis laevigata, Conocarpus erectus, Ficus aurea, Fraxinus caroliniana, Magnolia virginiana, Metopium toxiferum, Myrsine floridana, Quercus laurifolia, Rhizophora mangle, Roystonea elata, Sabal palmetto, Salix caroliniana$, and ~Sideroxylon salicifolium$. Ferns, especially ~Blechnum serrulatum$, are often abundant.
Comm #7606	Fraxinus latifolia - Populus balsamifera ssp. trichocarpa / Corylus cornuta - Physocarpus capitatus Forest » more details accession code: VB.CC.22018.FRAXINUSLATIFOL	Western Ecology Working Group of...	0
Comm #7607	Pseudotsuga menziesii - Pinus ponderosa - Calocedrus decurrens Forest » more details accession code: VB.CC.21362.PSEUDOTSUGAMENZ	Western Ecology Working Group of...	0
Comm #7608	Arenaria hookeri Barrens Herbaceous Vegetation » more details accession code: VB.CC.27536.ARENARIAHOOKERI	Western Ecology Working Group of...	0
Comm #7609	A.1828 » more details accession code: VB.CC.1531.A1828 NOT CURRENTLY ACCEPTED	EcoArt 2002	0	This alliance is found in the western Great Lakes region on rocky substrates. Mosses and lichens comprise most of the cover. Short trees, shrubs, and graminoids are scattered throughout the stands. Vascular species can be found where soil has collected in cracks and depressions in the bedrock and on the edges of stands. ~Cladonia$ spp. and ~Polytrichum$ spp. are two abundant nonvascular taxa. ~Pinus banksiana$ is the most common tree, sometimes accompanied by ~Abies balsamea, Picea glauca, Picea mariana$, and ~Quercus rubra$. Other typical vascular species include the shrubs ~Amelanchier$ spp., ~Diervilla lonicera, Salix bebbiana$, and ~Vaccinium$ spp., and herbaceous species such as ~Aralia hispida, Corydalis sempervirens, Sibbaldiopsis tridentata$, and grasses. ^Stands of this alliance occur on rock outcrops on ridgetops and upper slopes. The sandy and coarse loamy soils are found only in cracks and depressions in the bedrock. Aspect and slope are variable, although this alliance does not occur on steep slopes.
Comm #7610	A.327 » more details accession code: VB.CC.1951.A327 NOT CURRENTLY ACCEPTED	EcoArt 2002	0	This alliance occurs in seasonally flooded portions of active floodplains that periodically receive overbank flooding and hold water into the growing season. The canopy usually contains ~Quercus laurifolia$ or ~Quercus phellos$. Other species characteristic of forests in this alliance include ~Taxodium distichum, Nyssa biflora, Quercus nigra, Fraxinus caroliniana, Itea virginica, Sabal minor, Justicia ovata, Proserpinaca pectinata$, and ~Saururus cernuus$. The subcanopy layer is often well-developed and ~Carpinus caroliniana$ is common, but the shrub and herbaceous layers usually are sparse. These forests often grade into ~Taxodium - Nyssa$ swamps. They are distributed in the Atlantic Coastal Plain from North Carolina and possibly Virginia to Georgia, and in the Gulf Coast to Louisiana and possibly Texas. An association described from Ft. Benning and the Oconee National Forest is dominated by ~Quercus phellos$ and ~Liquidambar styraciflua$.