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Name
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Reference
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Description |
Comm #6701
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Artemisia filifolia / Bouteloua breviseta - Gaillardia multiceps Shrubland
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accession code: VB.CC.36266.CEGL004560
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Southeastern Ecology Working Gro... |
0
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This community occupies moist interdune swales over gypsum sand. It occurs in association with several other communities in this alliance. Typical shrubs are <i>Artemisia filifolia, Krameria lanceolata, Psorothamnus scoparius</i>, and <i>Yucca elata</i>. The dwarf-shrub <i>Tiquilia hispidissima</i> may also be present. Herbaceous species are prominent, including <i>Bouteloua breviseta, Bouteloua trifida, Gaillardia multiceps, Sporobolus flexuosus, Sporobolus nealleyi, Sporobolus contractus, Sporobolus giganteus, Monroa squarrosa, Senecio warnockii, Sartwellia flaveriae, Dimorphocarpa wislizeni (= Dithyrea wislizeni), Nerisyrenia linearifolia, Tidestromia lanuginosa, Lepidium alyssoides var. angustifolium (= Lepidium montanum var. angustifolium), Mentzelia humilis, Mentzelia saxicola, Thelesperma megapotamicum</i>, and <i>Sphaeralcea incana</i>. Many of the species present are gypsophiles or gypsum endemics. |
Comm #6702
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Larrea tridentata - Hechtia texensis Shrubland
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accession code: VB.CC.35859.CEGL004565
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Southeastern Ecology Working Gro... |
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This community occurs on limestone slopes. Important species are <i>Larrea tridentata, Hechtia texensis, Euphorbia antisyphilitica, Jatropha dioica var. graminea</i>, and <i>Bouteloua ramosa</i>. |
Comm #6703
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Luzula glabrata var. hitchcockii - Erythronium grandiflorum Herbaceous Vegetation
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accession code: VB.CC.32229.CEGL005873
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Western Ecology Working Group of... |
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This vegetation type has only been documented from Glacier National Park, Montana, but it is highly likely to also occur in Waterton Lakes National Park, Alberta. This small-patch type is common in the upper subalpine and extends just into the lower alpine exhibiting a relatively narrow elevation range from 1900 to 2120 m (6230-6950 feet). It is a component of a complexly patterned environment representing those positions that accumulate a deep snowload and retain it long into the growing season. It generally occupies gently rolling terrain, particularly depressions within, and extends to gentle slopes and even steep slopes if conditions are conducive to snow accumulation and retention. It often occurs as narrow patches between tree-dominated atolls at the highest elevations of tree development. Parent materials include predominantly calcareous and noncalcareous fine-textured sedimentary rock. Soils are moderately well- to poorly drained. Exposed rock and soil generally do not exceed 10% cover with the great majority of the ground surface covered with litter from the abundant vegetation. There are virtually no shrubs, with the typical expression a lush herbaceous vegetation (average cover 82%) that is usually dominated by a discontinuous sward of <i>Luzula glabrata var. hitchcockii</i>. Other graminoids of high constancy and indicative of various degrees of snowbed conditions include <i>Carex nigricans</i> and <i>Carex spectabilis</i>. More sporadically represented snowbed graminoids include <i>Juncus drummondii</i> and <i>Juncus parryi</i>. <i>Vahlodea atropurpurea, Phleum alpinum</i>, and <i>Poa cusickii</i> also have high constancy. On the more poorly drained sites, a variable suite of forbs associated with mesic to subhygric moisture regimes may exceed the graminoid cover; these forbs include <i>Erigeron peregrinus, Hieracium gracile, Epilobium anagallidifolium (= Epilobium alpinum), Hypericum scouleri, Arnica x diversifolia, Arnica latifolia</i>, and <i>Valeriana sitchensis</i>. The spring ephemeral <i>Erythronium grandiflorum</i> is dominant (cover to 50+%) immediately following snow departure. Both lichen and bryophyte cover are minimal, seldom exceeding 5%. |
Comm #6704
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Larrea tridentata - Jatropha dioica var. graminea Shrubland
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accession code: VB.CC.35858.CEGL004566
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Southeastern Ecology Working Gro... |
0
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This community occurs on igneous rocks in Trans-Pecos Texas and south into Mexico. Dominant shrubs are <i>Larrea tridentata</i> and <i>Jatropha dioica var. graminea</i>. |
Comm #6705
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Larrea tridentata - Opuntia schottii Shrubland
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accession code: VB.CC.35875.CEGL004567
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Southeastern Ecology Working Gro... |
0
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This <i>Larrea</i> community occurs on limestone flats. The <i>Larrea</i> is often stunted (0.5-1.0 m) and vascular plant richness is low. Spacing between <i>Larrea</i> individuals is usually wide, and these areas are often barren or occupied by clones of <i>Opuntia schottii</i>. |
Comm #6706
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Larrea tridentata / Scleropogon brevifolius Shrubland
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accession code: VB.CC.35832.CEGL004568
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Southeastern Ecology Working Gro... |
0
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This community is extensive in portions of Trans-Pecos Texas. It is, at least in part, the result of overgrazing. <i>Scleropogon brevifolius</i> is the primary grass occurring under a dense to sparse <i>Larrea tridentata</i> stratum. <i>Prosopis glandulosa var. torreyana</i> is often present as well. |
Comm #6707
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Pinus remota / Juniperus pinchotii - Quercus mohriana Woodland
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accession code: VB.CC.36034.CEGL004585
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Southeastern Ecology Working Gro... |
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This community occurs at moderate elevations in the Sierra Madera of Trans-Pecos Texas. <i>Pinus remota</i> dominates the 4- to 10-m high canopy. <i>Quercus mohriana</i> and <i>Juniperus pinchotii</i> dominate the shrub stratum, with other species including <i>Yucca elata</i>. The herb layer is dominated by <i>Bouteloua curtipendula</i>, with <i>Bouteloua gracilis</i> and <i>Agave lechuguilla</i> also present. |
Comm #6708
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Juniperus occidentalis / Artemisia tridentata ssp. vaseyana Woodland
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accession code: VB.CC.21452.JUNIPERUSOCCIDE
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Western Ecology Working Group of... |
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Comm #6709
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Pinus contorta var. murrayana - Pinus albicaulis / Carex filifolia Forest
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accession code: VB.CC.24662.PINUSCONTORTAVA
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Western Ecology Working Group of... |
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Comm #6710
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Festuca altaica - Danthonia intermedia Herbaceous Vegetation
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accession code: VB.CC.36996.CEGL002435
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Midwestern Ecology Working Group... |
0
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