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Add/Drop	Name	Reference	Plots↓	Description
Comm #6061	Pistia stratiotes Herbaceous Vegetation » more details accession code: VB.CC.35518.CEGL004902	Southeastern Ecology Working Gro...	0	Stands of this aquatic vegetation are dominated by <i>Pistia stratiotes</i>. Other floating plants are often admixed, including <i>Salvinia auriculata, Spirodela polyrrhiza, Azolla caroliniana</i>, and other aquatics. The hydrology of these sites is usually permanently or semipermanently flooded, although periodic drying can occur.
Comm #6062	CEGL007972 » more details accession code: VB.CC.7524.CEGL007972 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #6063	Tsuga mertensiana - Chamaecyparis nootkatensis / Vaccinium (alaskaense, ovalifolium) / Coptis aspleniifolia Forest » more details accession code: VB.CC.37325.CEGL002838		0	This association occurs within the subalpine Wet Hypermaritime Mountain Hemlock Subzone (MHwh) along the outer coast from approximately 500 to 1100 m above sea level within the southern portion of the S.E. Alaska - B.C. Coast and Mountains (TNC Ecoregion 69). Slope positions tend to be moderate middle to upper slopes and gently rolling ridges or saddles where imperfectly to poorly drained loamy and even silty mineral soils on colluvial or morainal veneers, and similarly drained upland organic veneers over bedrock, are typical. This low- to poor-productivity scrubby forest community is codominated by <i>Tsuga mertensiana</i> and <i>Chamaecyparis nootkatensis (= Callitropsis nootkatensis)</i>, followed closely by <i>Tsuga heterophylla</i>. In addition to regeneration of the above tree species, the moderate-cover shrub layer includes <i>Vaccinium parvifolium, Vaccinium ovalifolium, Vaccinium alaskaense</i>, and <i>Menziesia ferruginea</i>. Species in the sparse to moderately developed herb layer include <i>Coptis aspleniifolia, Blechnum spicant, Listera cordata, Rubus pedatus</i>, and <i>Streptopus lanceolatus</i>. Common species in the well-developed moss layer are <i>Rhytidiadelphus loreus</i> (dominant), <i>Hylocomium splendens, Scapania bolanderi, Dicranum fuscescens</i>, and <i>Sphagnum girgensohnii</i>. <i>Picea sitchensis</i> does not occur in the canopy. Species characteristic of other similar associations and normally not found in this community include <i>Phyllodoce empetriformis, Cassiope mertensiana, Luetkea pectinata</i>, and <i>Peltigera</i> spp. Although they may be present, there should not be high coverage of <i>Caltha leptosepala, Nephrophyllidium crista-galli (= Fauria crista-galli), Carex</i> spp., or <i>Lysichiton americanus</i>.
Comm #6064	Atriplex polycarpa Shrubland » more details accession code: VB.CC.26654.ATRIPLEXPOLYCAR	Western Ecology Working Group of...	0
Comm #6065	Ruppia maritima Tropical Herbaceous Vegetation » more details accession code: VB.CC.35252.CEGL004906	Southeastern Ecology Working Gro...	0	This association represents estuarine and marine seagrass beds of the West Indies and southern Florida, dominated by <i>Ruppia maritima</i>, often nearly monospecific, and sometimes with other species, including <i>Najas guadalupensis, Halodule </i><i>wrightii</i>, and <i>Cymodocea filiformis</i>.
Comm #6066	Pinus edulis - (Juniperus spp.) Woodland Alliance » more details accession code: VB.CC.18773.PINUSEDULISJUNI	Western Ecology Working Group of...	0	Pinus edulis-dominated woodlands occur in the mountains of Colorado, Utah, Arizona, and New Mexico, in the western-most tip of the Oklahoma panhandle, and possibly in western Texas. Associated species can include Juniperus monosperma, Juniperus osteosperma, Juniperus deppeana, Juniperus coahuilensis (= Juniperus erythrocarpa), Quercus arizonica, Cercocarpus montanus, Cercocarpus ledifolius, Arctostaphylos pungens, Artemisia tridentata, Rhus trilobata, Bouteloua gracilis, Andropogon hallii, Festuca arizonica, Muhlenbergia dubia, and others.
Comm #6067	CEGL004616 » more details accession code: VB.CC.6151.CEGL004616 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #6068	CEGL004617 » more details accession code: VB.CC.6152.CEGL004617 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #6069	Quercus phellos - (Quercus lyrata) / Carex joorii - Saccharum baldwinii Floodplain Forest » more details accession code: VB.CC.22638.QUERCUSPHELLOSQ	Southeastern Ecology Working Gro...	0	This association occurs on lower portions of islands and levees that gently slope downward into wetter swamps of Caddo Lake, Texas, and likely includes related vegetation of adjacent Louisiana and Arkansas. The description is based on the work of Van Kley and Hine (1998). These areas are seasonally flooded on poorly drained soils. Stands are typically dominated by Quercus phellos with lesser amounts of Quercus lyrata, Nyssa sylvatica, and Liriodendron tulipifera. Important shrubs include Crataegus opaca, Diospyros virginiana, Styrax americanus, Ilex decidua, and Forestiera acuminata. Diagnostic understory species are Carex joorii and Saccharum baldwinii. The understory vegetation may also include Hibiscus moscheutos, Brunnichia ovata, Boehmeria cylindrica, Acalypha virginica, Hypericum hypericoides (= Ascyrum hypericoides), Berchemia scandens, Dichanthelium dichotomum, Trachelospermum difforme, and Toxicodendron radicans. Seedlings of Diospyros virginiana, Styrax americanus, Quercus lyrata, and Liquidambar styraciflua may be abundant.
Comm #6070	Larix lyallii / Vaccinium membranaceum / Luzula glabrata var. hitchcockii Woodland » more details accession code: VB.CC.31132.CEGL005884	Western Ecology Working Group of...	0	This association has been described from only the northern Rocky Mountains of Montana and their continuation into Alberta (as the Canadian Rockies). It occurs on mesic to hygric sites at the highest extents of the subalpine zone (2030-2225 m [6660-7300 feet]) on slopes of all degrees of inclination, with moderate to steep (30-70%) lee slopes (east- and north-facing) predominating. Colluvial landforms with well-drained soils are the norm. These sites are hypothesized to be snow-accumulation positions and because of their cool aspects melt-off of the deep snowpack occurs late in the growing season. Stand structure is generally quite open, with the upper tree canopy cover varying from 15% to slightly greater than 50% and tree heights generally not exceeding 12 m (40 feet). <i>Larix lyallii</i> is the dominant tree and sometimes only tree represented (considered diagnostic at 5% or greater cover), though common associates are <i>Abies lasiocarpa</i> and <i>Picea engelmannii</i>; in the subcanopy <i>Abies lasiocarpa</i> may often have greater cover than <i>Larix lyallii</i>. <i>Vaccinium membranaceum</i> is highly constant, though its cover and stature are much reduced from that recorded from lower subalpine sites; it is sufficiently diminutive to be confused with <i>Vaccinium myrtillus</i>, which is only about 20% constant with around 5% average cover. The cover of the undergrowth diagnostic <i>Luzula glabrata var. hitchcockii</i> ranges widely, 10-70%, and it is generally the undergrowth dominant as well; its high cover is indicative of deep and late-persisting snowpack. A number of herbaceous species associated with mesic to hygric moisture regimes have relatively high constancy, including <i>Senecio triangularis, Erigeron peregrinus, Mitella breweri, Veratrum viride</i>, and <i>Valeriana sitchensis</i>. <i>Arnica x diversifolia</i> and <i>Pedicularis bracteosa</i> are also commonly occurring forbs. Bryophytes and lichen are generally sparse both on the ground and as epiphytes.