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Reference
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Description |
Comm #11491
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Sporobolus wrightii - Panicum hallii Herbaceous Vegetation
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accession code: VB.CC.32773.CEGL001485
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Western Ecology Working Group of... |
0
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Comm #11492
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Pinus leiophylla / Quercus emoryi Woodland
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accession code: VB.CC.33430.CEGL000823
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Western Ecology Working Group of... |
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This highly diverse `Madrean' woodland association is restricted to the isolated `sky island' mountain ranges of southwestern New Mexico, southern Arizona, and northern Mexico. It is specifically known from Canelo Hills, and Patagonia, Pinaleno, Galiuro, Huachuca mountains in southern Arizona, and the Peloncillo Mountains in New Mexico. There are a few isolated outliers in the central highlands of Arizona (Tonto National Forest and Fort Apache Indian Reservation). This warm, dry association reaches the lowest elevations of the alliance, ranging from 1510-1970 m (4960-6450 feet). It is generally found on moderate slopes of northerly aspect. In the southern portion of its range it occurs on rhyolite and granite; to the north it occurs on sandstone. Soils tend to be shallow and rocky. <i>Pinus leiophylla</i> forms an open canopy with <i>Pinus cembroides</i> and <i>Juniperus deppeana</i> in the subcanopy. <i>Pinus ponderosa</i> sometimes is present as a climax codominant. A diagnostic feature is well-represented to abundant cover of <i>Quercus emoryi</i>, which occurs as a small tree or shrub. <i>Quercus arizonica</i> is also well-represented and often codominates, but <i>Quercus hypoleucoides</i> is poorly represented. Other shrubs include <i>Arctostaphylos pungens, Arctostaphylos pringlei, Nolina microcarpa, Garrya wrightii</i>, and <i>Rhus aromatica</i>. This type has a distinctively grassy undergrowth dominated by Madrean drought-tolerant species such as <i>Muhlenbergia longiligula, Muhlenbergia emersleyi, Aristida schiedeana var. orcuttiana (= Aristida orcuttiana)</i>, and <i>Schizachyrium cirratum</i>. Forbs are diverse, variable, and scattered; the most constant species are <i>Packera neomexicana (= Senecio neomexicanus), Glandularia bipinnatifida (= Verbena bipinnatifida), Lathyrus graminifolius, Gnaphalium</i> spp., and <i>Cheilanthes fendleri</i>. |
Comm #11493
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Pinus leiophylla / Quercus hypoleucoides Woodland
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accession code: VB.CC.33054.CEGL000824
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Western Ecology Working Group of... |
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This highly diverse `Madrean' woodland association is restricted to the isolated `sky island' mountain ranges of southwestern New Mexico, southern Arizona, and northern Mexico. It is specifically known from the Canelo Hills and Santa Catalina, Santa Rita, Patagonia, Chiricahua, Peloncillo and Huachuca mountains. There are a few isolated outliers in the central highlands of Arizona (Fort Apache Indian Reservation). Stands typically occur at elevations from 1740-2165 m (5700-7100 feet) on steep to very steep slopes with variable aspects. Generally, sites are warm and dry to very dry. The association is characterized by an open canopy of <i>Pinus leiophylla</i> with a subcanopy of <i>Pinus cembroides, Juniperus deppeana</i>, and evergreen oaks, including <i>Quercus hypoleucoides</i> and <i>Quercus arizonica</i>. The dominance of <i>Quercus hypoleucoides</i> over <i>Quercus arizonica</i> is diagnostic. In some cases, <i>Quercus arizonica</i> will be absent; <i>Quercus emoryi</i> is also absent or rare. Along with evergreen oaks, the shrub layer may contain a variety of xeric species such as <i>Arbutus arizonica, Nolina microcarpa, Agave parryi, Garrya wrightii, Yucca schottii, Rhus aromatica</i>, and <i>Arctostaphylos</i> spp. The <i>Arctostaphylos</i> spp. cover is generally less than 5%. The herb layer is characterized by xeric grasses such as <i>Muhlenbergia longiligula, Muhlenbergia emersleyi</i>, or <i>Aristida schiedeana var. orcuttiana (= Aristida orcuttiana)</i>; <i>Piptochaetium fimbriatum</i> is absent or accidental. Forbs are diverse, variable, and sparse; the most constant are <i>Hedeoma hyssopifolia, Desmodium rosei, Cheilanthes fendleri, Gnaphalium</i> spp., and <i>Packera neomexicana (= Senecio neomexicanus)</i>. |
Comm #11494
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CEGL004323
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accession code: VB.CC.5934.CEGL004323
NOT CURRENTLY ACCEPTED
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EcoArt 2002 |
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Comm #11495
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Artemisia tridentata ssp. vaseyana / Bromus carinatus Shrubland
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accession code: VB.CC.34371.CEGL001021
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Western Ecology Working Group of... |
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This association is documented only from Grand Teton National Park, Wyoming. It occurs on an upland toeslope at an elevation of 2232 m (7319 feet) with a gradient of 22% on a southern aspect. The soil is a well-drained sandy loam. The low-shrub canopy is dominated by <i>Artemisia tridentata ssp. vaseyana</i>, and <i>Symphoricarpos oreophilus</i> occurs in small amounts. Graminoids are common and are dominated by <i>Elymus trachycaulus, Bromus carinatus</i>, and <i>Melica spectabilis</i>. Forbs are dominated by <i>Eriogonum umbellatum, Symphyotrichum ascendens</i>, and <i>Antennaria microphylla</i>. |
Comm #11496
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Pinus monophylla - Juniperus osteosperma / Artemisia tridentata Woodland
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accession code: VB.CC.33214.CEGL000832
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Western Ecology Working Group of... |
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This woodland association occurs in the Great Basin. Elevations range from 1220-2300 m (4000-7550 feet). Stands occur on mesas, hills and rocky ridges on gentle to steep slopes on all aspects. The soils are shallow to moderately deep, calcareous, lithic loams or clays. The vegetation is characterized by an open to moderately dense tree canopy (10-40% cover) typically codominated by <i>Pinus monophylla</i> and <i>Juniperus osteosperma</i>. <i>Juniperus osteosperma</i> is often more abundant at lower elevation. The short-shrub layer is typically sparse (10-15% cover) and is dominated by <i>Artemisia tridentata</i>. <i>Chrysothamnus viscidiflorus</i> or <i>Purshia tridentata</i> are frequent associates. Other associated shrubs may include low cover of <i>Amelanchier</i> spp., <i>Ephedra nevadensis, Ephedra viridis, Ericameria nauseosa, Grayia spinosa</i>, and species of <i>Gutierrezia, Opuntia, Tetradymia</i>, and <i>Yucca</i>. The sparse to moderately dense herbaceous layer is dominated by graminoids with scattered forbs. Frequent graminoids are <i>Elymus elymoides</i> and <i>Poa secunda</i>. Although forb cover is generally sparse, it may be very diverse. Frequent forbs include species of <i>Astragalus, Balsamorhiza, Machaeranthera, Eriogonum</i>, and <i>Phlox</i>. Disturbed stands may have high cover of the introduced annual grass <i>Bromus tectorum</i>. |
Comm #11497
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Phlox pulvinata - Trifolium dasyphyllum Herbaceous Vegetation
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accession code: VB.CC.33137.CEGL001980
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Western Ecology Working Group of... |
0
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This alpine cushion-plant vegetation association has been named from Carter Mountain on the eastern side of the Absaroka Mountains in northwestern Wyoming. Stands of this type occur on moderately steep slopes in the lee of ridgetops. Soils are loamy to sandy loam in texture, moderately deep, stony throughout, and provide less water than soils on other topographic positions in the area. The vegetation, as described by standing crop rather than cover, consists mainly of <i>Phlox pulvinata</i> and <i>Trifolium dasyphyllum</i>, with <i>Artemisia scopulorum, Lomatium cous, Oxytropis parryi, Phlox multiflora</i>, and <i>Arenaria congesta</i> as common species. Graminoids (mainly <i>Poa</i> spp., <i>Koeleria macrantha, Carex elynoides</i>, and <i>Carex obtusata</i>) produce less standing crop than do the cushion forbs. |
Comm #11498
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Potentilla sierrae-blancae Herbaceous Vegetation
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accession code: VB.CC.33253.CEGL001982
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Western Ecology Working Group of... |
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This tundra/fell-field association is found only on the upper slopes of the Sacramento Mountains in the vicinity of Sierra Blanca Peak, Otero County, New Mexico. Stands occur at high elevations between 3200-3600 m (10,500-11,800 feet) on open, windswept slopes that can be characterized as alpine tundra. The sites are above timberline and typically cold and dry, due to constant winds which maintain snowfree slopes. Soils are thin, lithosolic, extremely cobbly and excessively drained. Most plant species are of cushion plant growth form, an adaptation to the harsh, windy environment. This is an open association, dominated by low-growing, herbaceous perennials. Most of these species have the characteristic cushion plant growth form found in tundra plants and are less than 5 inches in height. Total cover varies from 30% to over 60%. <i>Potentilla sierrae-blancae</i> is the dominant species, averaging 20-35% cover. Other common species include <i>Minuartia obtusiloba, Primula rusbyi (= Primula ellisiae), Pseudocymopterus montanus</i>, and <i>Zigadenus elegans</i>. Graminoid species are not abundant. Lichens are very common. This is the southernmost example of tundra fell-field in the United States. It has floristic and physiognomic affinities with tundra communities of Colorado, but is relatively depauperate due to its more southerly latitude. |
Comm #11499
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Juniperus occidentalis / Artemisia tridentata / Pseudoroegneria spicata Wooded Herbaceous Vegetation
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accession code: VB.CC.33575.CEGL001721
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Western Ecology Working Group of... |
0
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Comm #11500
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Carex duriuscula - Poa secunda Herbaceous Vegetation
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accession code: VB.CC.33965.CEGL001736
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Western Ecology Working Group of... |
0
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