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Panicum obtusum Herbaceous Vegetation | Western Ecology Working Group of...
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Name: Panicum obtusum Herbaceous Vegetation Reference: Western Ecology Working Group of... Description: This herbaceous association is found in New Mexico and Texas. It is currently only described from Lake Meredith National Recreation Area in Texas. Additional global information will be added as it becomes available. The composition and structure of this community are influenced by climate, soils (texture, depth, and overflow), slope, natural fire and grazing pressure. It occurs on broad, gently sloping overflow sites along major drainages. The soils are deep, medium- to moderately fine-textured with moderately high fertility. Infiltration is moderately rapid and runoff is moderate. The soils are formed from colluvial deposits and are considered uplands, although overflow can occasionally occur. The productive capacity is greater than the adjoining upland communities due to receiving extra runoff from surrounding upland sites. Natural fire helped to shape the natural plant community and probably occurred every 8 to 10 years in presettlement times. This community is attractive to domestic grazing animals and has been subject to overgrazing in past decades. This grassland is dominated by <i>Panicum obtusum</i>. There are several other species of grass occurring in lesser amounts, including <i>Pascopyrum smithii, Sporobolus compositus var. compositus (= Sporobolus asper var. hookeri), Bouteloua curtipendula</i>, and <i>Bothriochloa laguroides</i>. Forbs are variable in composition depending on moisture conditions. The major species include <i>Solanum elaeagnifolium, Ambrosia psilostachya, Centaurea americana, Grindelia papposa (= Prionopsis ciliata), Gaura villosa</i>, and <i>Sphaeralcea angustifolia</i>. There are usually few shrubs present. <i>Prosopis glandulosa</i> occurs but is usually sparse. Cacti are rare, although <i>Opuntia phaeacantha</i> and <i>Opuntia macrorhiza</i> are both present. Trees are rare except for occasional <i>Celtis laevigata var. reticulata (= Celtis reticulata)</i>.  Accession Code: VB.CC.32073.CEGL002708 Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 17-Nov-2014 to: 01-May-2019
	status: accepted This Community's Level: association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.741458 NatureServe Explorer   Translated: Vine-mesquite Herbaceous Vegetation   Scientific: Panicum obtusum Herbaceous Vegetation   Code: CEGL002708