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Name
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Reference
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Plots↓
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Description |
Comm #10421
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CEGL008620
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accession code: VB.CC.7922.CEGL008620
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
0
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Comm #10422
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Celtis laevigata - Ulmus crassifolia - (Fraxinus spp.) / Celtis pallida / Elymus virginicus Forest
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accession code: VB.CC.36080.CEGL007782
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Southeastern Ecology Working Gro... |
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This deciduous forest occurs on silty to clayey alluvial soils on stream terraces in southern Texas north of the Lower Rio Grande Valley. <i>Celtis laevigata var. laevigata</i> and <i>Ulmus crassifolia</i> are generally the clear canopy dominants; <i>Fraxinus berlandieriana, Fraxinus pennsylvanica</i>, and <i>Sapindus saponaria var. drummondii</i> are usually present. <i>Celtis pallida</i> occurs either in a poorly defined subcanopy or in the shrub layer, which ranges from open to choked with woody vines such as <i>Toxicodendron radicans, Smilax bona-nox</i>, and <i>Vitis mustangensis</i>. Ground cover on well-developed level terraces is dense and grassy, dominated by <i>Elymus virginicus</i>, along with <i>Chasmanthium latifolium</i>, and <i>Nassella leucotricha</i>. Characteristic forbs include <i>Clematis pitcheri, Stellaria prostrata, Dicliptera brachiata, Rivina humilis, Chaerophyllum tainturieri var. tainturieri</i>, and <i>Galium aparine</i>. This community is similar to other communities in this alliance but differs in the presence of southern elements like <i>Celtis pallida</i> and the absence of subtropical elements that distinguish ~<i>Celtis laevigata - Ulmus crassifolia - (Fraxinus berlandieriana) / Rivina humilis - Chromolaena odorata</i> Forest (CEGL007752)$$. |
Comm #10423
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Sabal palmetto / Glyceria septentrionalis - Carex stipata - Woodwardia virginica Woodland
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accession code: VB.CC.35245.CEGL007784
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Southeastern Ecology Working Gro... |
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This vegetation occupies old dune swales as well as extensive low flats between old dune ridges which support maritime forests in the South Atlantic Coastal Plain. These woodlands are dominated by <i>Sabal palmetto</i> which comprises over 95% of the canopy in places. Few other tree species occur; occasional <i>Quercus laurifolia, Acer rubrum, Juniperus virginiana var. silicicola (= Juniperus silicicola), Persea</i> sp., <i>Morella cerifera (= Myrica cerifera)</i>, and <i>Morus rubra</i> are found. This association has an open, glade-like aspect with a dense herbaceous layer. Common herbaceous species include <i>Glyceria septentrionalis, Cladium mariscus ssp. jamaicense (= Cladium jamaicense), Woodwardia virginica, Woodwardia areolata, Hydrocotyle verticillata, Rhynchospora caduca, Carex stipata var. maxima</i>, and <i>Boehmeria cylindrica</i>. |
Comm #10424
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CEGL007666
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accession code: VB.CC.7275.CEGL007666
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EcoArt 2002 |
0
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Comm #10425
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Prosopis glandulosa var. glandulosa - Celtis pallida / Opuntia spp. - Xylothamia palmeri Woodland
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accession code: VB.CC.35592.CEGL007787
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Southeastern Ecology Working Gro... |
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This community typically occurs on heavy clay soils over the Pleistocene Beaumont Formation, on inland sites near the coast of southern Texas. <i>Prosopis glandulosa var. glandulosa</i> 3-6 m in height provide 50-75% cover, sometimes mixed with <i>Celtis pallida</i> and relatively few other tall woody species; <i>Acacia farnesiana (= Acacia smallii)</i> is present in lower areas. <i>Opuntia engelmannii var. lindheimeri, Opuntia leptocaulis</i>, and <i>Xylothamia palmeri (= Ericameria austrotexana)</i> are typically common in the shrub layer, along with <i>Ziziphus obtusifolia var. obtusifolia, Lantana urticoides (= Lantana horrida), Prosopis reptans</i>, and other unpalatable species; shrub density is often highest under taller mesquite. Ground layer vegetation varies considerably with season and livestock stocking; important species include <i>Nassella leucotricha (= Stipa leucotricha), Buchloe dactyloides, Bothriochloa longipaniculata, Sporobolus compositus (= Sporobolus asper), Panicum hallii, Tridens texanus, Aristida</i> spp., <i>Setaria</i> spp., <i>Malvastrum</i> spp., <i>Ratibida columnifera (= Ratibida columnaris), Ambrosia psilostachya, Abutilon</i> spp., and <i>Allowissadula lozanii</i>. <i>Dichanthium annulatum</i> is a common non-native invader. |
Comm #10426
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Abies lasiocarpa var. lasiocarpa - Pinus albicaulis / Juniperus communis Woodland
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accession code: VB.CC.27966.ABIESLASIOCARPA
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British Columbia Ministry of For... |
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This small-patch community occurs on ridge crests and warm-aspect upper slopes of variable steepness. Soils are variably textured, developed from morainal and colluvial veneers over bedrock. Sites are dry and nutrient-poor. This subalpine woodland community is characterized by an open canopy Pinus albicaulis and Pinus contorta var. latifolia, with regenerating Abies lasiocarpa var. lasiocarpa. The understory is sparse, dominated by Juniperus communis in the shrub layer, sometimes with Vaccinium membranaceum and with Calamagrostis rubescens, Lupinus arcticus ssp. subalpinus in the herb layer. The sparse nonvascular layer consists mainly of lichens. The high constancy and dominance of Pinus albicaulis and Juniperus communis, along with Calamagrostis rubescens, Lupinus arcticus ssp. subalpinus, and Sedum lanceolatum differentiate this association from other related associations. |
Comm #10427
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Prosopis glandulosa var. glandulosa / Colubrina texensis - Monarda fruticulosa - Waltheria indica Woodland
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accession code: VB.CC.35558.CEGL007788
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Southeastern Ecology Working Gro... |
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This deciduous woodland (savanna) occurs on deep loamy fine sands of the South Texas Plains (primarily Brooks, Hidalgo, Jim Hogg, Kenedy, and Starr counties). <i>Prosopis glandulosa var. glandulosa</i> covers roughly 25% of a typical site; few other tree species are present. Shrubs cluster under <i>Prosopis</i> but may also cover an additional 25%; <i>Colubrina texensis</i> is generally the most common species, along with <i>Monarda fruticulosa (= Monarda punctata var. fruticulosa), Lantana urticoides (= Lantana horrida), Ziziphus obtusifolia var. obtusifolia, Cordia boissieri, Diospyros texana</i>, and other species. <i>Waltheria indica</i>, while never abundant, is a characteristic component of these sandy sites. Half or more of a typical site is covered by grasses and forbs; characteristic species include <i>Cenchrus spinifex (= Cenchrus incertus), Chloris cucullata, Eragrostis secundiflora, Eragrostis sessilispica, Paspalum setaceum, Schizachyrium scoparium, Acalypha radians, Caesalpinia austrotexana, Cnidoscolus texanus, Cryptantha texana, Evolvulus alsinoides var. angustifolius, Matelea parviflora, Nama hispidum, Palafoxia texana, Pediomelum rhombifolium, Phyllanthus abnormis, Rhynchosia americana, Mimosa latidens (= Schrankia latidens), Tephrosia lindheimeri</i>, and <i>Zornia bracteata</i>. <i>Pennisetum ciliare var. ciliare (= Cenchrus ciliaris)</i> may invade. |
Comm #10428
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Eichhornia crassipes Permanently Flooded Herbaceous Alliance
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accession code: VB.CC.28461.EICHHORNIACRASS
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Southeastern Ecology Working Gro... |
0
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This alliance contains aquatic ruderal vegetation dominated by the exotic pest plant Eichhornia crassipes, which can withstand brief periods of freezing. This alliance is primarily limited to tropical Florida, but extends northwards into temperate peninsular and Panhandle Florida. It also occurs sporadically along the Texas coast. The hydrology of these sites is usually permanently or semipermanently flooded, although periodic drying can occur. Other species sometimes occur intermixed with Eichhornia. The more permanent mats may develop a substantial additional flora, including Habenaria repens. Growth rates are very high, and mats can double in size in 11-18 days. Floating or rooted (by stranding) aquatic vegetation in slow-moving or stagnant, usually eutrophic water of lakes, ponds and rivers, dominated by Eichhornia crassipes, and often essentially monospecific. |
Comm #10429
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Carnegia gigantea Wooded Shrubland Alliance
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accession code: VB.CC.25515.CARNEGIAGIGANTE
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Western Ecology Working Group of... |
0
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Wooded shrublands included in this alliance are characteristic of the Sonoran Desert. Stands commonly occur on lower slopes of mountains, foothills, bajadas, and less commonly in valleys and plains. Freezing winter temperatures limit the elevation and northern extent of these stands. Northern stands are restricted to the warmer southern and southwestern slopes, and in the southern extent of Mexico, stands are restricted to northern slopes. Substrates are gravelly, well-drained, coarse-textured soils. These shrublands have a diagnostic sparse, emergent tree layer of Carnegia gigantea (3-16 m tall). The dominant vegetation is a sparse to moderately dense woody canopy that is typically codominated by the tall shrubs Prosopis velutina and Parkinsonia microphylla with Olneya tesota and Fouquieria splendens abundant in many stands. Many other shrubs, dwarf-shrubs and cacti species may be present. The herbaceous layer is typically sparse with annuals seasonally present. |
Comm #10430
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Fraxinus latifolia - Populus balsamifera ssp. trichocarpa / Rubus spectabilis Forest
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accession code: VB.CC.34142.CEGL003405
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Western Ecology Working Group of... |
0
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