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Calamovilfa longifolia - Hesperostipa comata Grassland | NatureServe Biotics 2019
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Name: Calamovilfa longifolia - Hesperostipa comata Grassland Reference: NatureServe Biotics 2019 Description: This prairie sandreed grassland community type occurs in the central and northern Great Plains region of the United States and southwestern Canada. Stands occur on stabilized sand dunes, as well as in interdunal valleys, colluvial sands, and, less commonly, silty terraces of intermittent streams. Soils are medium to fine sands formed either from eolian or colluvial processes. The vegetation has an open canopy, dominated by mid to tall grasses. <i>Calamovilfa longifolia</i> and <i>Hesperostipa comata</i> are the most conspicuous and dominant grasses. Other common grasses include <i>Bouteloua gracilis, Koeleria macrantha, Achnatherum hymenoides</i>, and <i>Sporobolus cryptandrus</i>. The type may grade into stands dominated by <i>Pascopyrum smithii</i> and <i>Nassella viridula</i> at the base of slopes. <i>Andropogon hallii</i> or <i>Hesperostipa spartea</i> may also be present. Sedges are rare but could include <i>Carex inops ssp. heliophila</i> or <i>Carex filifolia</i>. Forb diversity ranges from low to moderate, depending on the site. Dry valley sand prairies may be particularly forb-rich. Silty terraces of intermittent streams may contain <i>Artemisia frigida, Artemisia ludoviciana, Gutierrezia sarothrae, Psoralidium tenuiflorum</i>, and <i>Yucca glauca</i>. Shrubs are scattered and infrequent to absent, with <i>Rhus trilobata</i> the most common species. <i>Rosa woodsii, Elaeagnus commutata</i>, and <i>Artemisia cana</i> become more common in northern occurrences. These areas are highly susceptible to invasion by exotic brome grasses (<i>Bromus arvensis, Bromus squarrosus</i>, and <i>Bromus tectorum</i>) and may be quite weedy.  Accession Code: urn:lsid:vegbank.org:commConcept:30382-{AB20ABBF-57B7-4FFF-B252-C1B7528650BF} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-May-2006 to: ongoing
	status: accepted Community's Parent: Calamovilfa longifolia Sand Prairie Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.690053 NatureServe Explorer   Code: CEGL001473   Translated: Prairie Sandreed - Needle-and-Thread Grassland   Common: Prairie Sandreed - Needle-and-Thread Prairie   Scientific: Calamovilfa longifolia - Hesperostipa comata Grassland (convergence) and Synonyms: (similar) Calamovilfa longifolia - Hesperostipa comata Herbaceous Vegetation (similar) Calamovilfa longifolia - Hesperostipa comata Herbaceous Vegetation (similar) CEGL001473