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stdcommconcept2683626836

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Polygonum spp. - Echinochloa spp. - Distichlis spicata Playa Lake Herbaceous Vegetation | Midwestern Ecology Working Group...
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Name: Polygonum spp. - Echinochloa spp. - Distichlis spicata Playa Lake Herbaceous Vegetation Reference: Midwestern Ecology Working Group... Description: This wetland community is found in the central Great Plains of the United States, where it occurs in shallow depressions on gently to moderately sloping topography. Soils are deep to moderately deep loams or clay loams underlain by a dense clay sublayer. Ponds often draw down periodically in these playa-type habitats. Annual herbaceous graminoids and forbs, mostly <1 m tall, dominate the exposed mud flats, and species composition and extent of the community fluctuate from site to site and year to year. In Nebraska, graminoids include Cyperus acuminatus, Eleocharis engelmannii, and Echinochloa muricata, and forbs include Bacopa rotundifolia, Coreopsis tinctoria, Elatine rubella, Heteranthera limosa, Limosella aquatica, Lindernia dubia, Mollugo verticillata, Polygonum pensylvanicum (= Polygonum bicorne), Polygonum lapathifolium, Rumex stenophyllus, and Sagittaria calycina. In Kansas, graminoids include Hordeum jubatum, and forbs include Ambrosia grayi, Symphyotrichum subulatum (= Aster subulatus), and Chenopodium berlandieri. The frequent water fluctuations and thick clay pan prevent establishment of most perennial hydrophytes, such as Schoenoplectus spp. (= Scirpus spp.) and Typha spp.  Accession Code: VB.CC.26836.POLYGONUMSPPECH Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 17-Nov-2014
	status: accepted Community's Parent: Polygonum spp. - Echinochloa spp. Temporarily Flooded Herbaceous Alliance This Community's Level: Association This Community's Children: [none]		Names:   Code: CEGL002039   Translated: Smartweed species - Barnyard Grass species - Saltgrass Playa Lake Herbaceous Vegetation   Common: Playa Marsh   UID: ELEMENT_GLOBAL.2.688735 NatureServe Explorer   Scientific: Polygonum spp. - Echinochloa spp. - Distichlis spicata Playa Lake Herbaceous Vegetation (convergence) and Synonyms: (undetermined) Polygonum spp. - Echinochloa spp. - Distichlis spicata Playa Lake Herbaceous Vegetation