Name:
Iva angustifolia - Clinopodium arkansanum - Distichlis spicata West Gulf Coastal Plain Saline & Weches Bedrock Grassland Alliance
Reference:
NatureServe Biotics 2019
Description:
This alliance accommodates moist to wet glades and barrens found in the West Gulf Coastal Plain of the United States in Arkansas, Louisiana and Texas, including glauconitic clay (Weches) glades and barrens and inland wet saline flats. The wetter inland saline prairies are dominated by <i>Eleocharis</i> sp. and <i>Iva angustifolia</i>. The shrub stratum consists of widely scattered individuals of <i>Sabal minor</i> and <i>Baccharis halimifolia</i>. The herbaceous stratum consists of scattered patches of <i>Bacopa monnieri, Distichlis spicata, Eleocharis</i> spp., <i>Fimbristylis</i> spp., <i>Iva angustifolia</i> (an annual), <i>Juncus</i> sp., <i>Schoenoplectus</i> spp., and others. Additional characteristic plant species that may be found in examples of this alliance include <i>Aristida dichotoma, Aristida longespica, Aristida purpurascens, Camassia scilloides, Clinopodium arkansanum, Delphinium carolinianum, Diodia teres, Euthamia leptocephala, Houstonia rosea, Krameria lanceolata, Piptochaetium avenaceum, Sabatia campestris, Schizachyrium scoparium, Sedum pulchellum, Sporobolus clandestinus, Sporobolus silveanus, Sporobolus vaginiflorus, Phemeranthus calycinus</i>, and <i>Tridens strictus</i>, as well as the shrubs <i>Baccharis halimifolia</i> and <i>Crataegus berberifolia</i>. The alliance is dominated by prairie-like vegetation, and examples are primarily herbaceous-dominated, but can contain scattered shrubs and trees, or have these present at the edges of occurrences. The herbaceous flora is diverse and varies considerably seasonally. These scattered vegetation patches are known from outcrops of saline material apparently associated with saline seepage from inland salt domes. The clayey soils (Bonn series, a Glossic Natraqualf) are saturated to rarely flooded with saline seepage. Saline springs form artesian mudpots or "ooze mounds" at scattered locations. The vegetation is patchy, with much bare soil.
Accession Code:
urn:lsid:vegbank.org:commConcept:39303-{3196AF0F-1056-498E-ABDD-3F340A1014D0}
Plot-observations of this Community Concept:
0
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