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Fraxinus pennsylvanica - (Carya aquatica) / Forestiera acuminata / Phanopyrum gymnocarpon Wet Floodplain Forest | NatureServe Biotics 2019
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Name: Fraxinus pennsylvanica - (Carya aquatica) / Forestiera acuminata / Phanopyrum gymnocarpon Wet Floodplain Forest Reference: NatureServe Biotics 2019 Description: This community occupies shallow depressions on Vertisols that exhibit strong gilgai microtopography. The soils formed over Holocene alluvium and are located in the present-day drainage basins of Caney Creek and the Colorado, San Bernard, and Brazos rivers in the Outer Coastal Plain of Texas. It also occurs as a fringe around larger depressions in the same area. The dominant overstory species is <i>Fraxinus pennsylvanica</i> which forms a slightly open canopy; <i>Carya aquatica</i> is usually present and may codominate the overstory in some occurrences. The sparse to locally dense understory provides an open aspect, with understory dominants including <i>Sabal minor, Forestiera acuminata</i> and <i>Cephalanthus occidentalis</i>. Ground cover vegetation may be banded along moisture and microtopographic contours; it is generally dense and continuous, but the deepest parts can be devoid of vegetation during dry seasons, exposing bare, cracked, fine-textured soil. It depends on seasonal inundation due to local rainfall events to maintain moist habitat conditions. <i>Phanopyrum gymnocarpon</i> is the visual dominant of the ground cover. Other ground cover components include <i>Hygrophila lacustris, Carex lupuliformis, Carex crus-corvi, Echinodorus cordifolius, Berchemia scandens, Polygonum virginianum, Rhynchospora corniculata, Saururus cernuus</i>, and <i>Mikania scandens</i>. It is a conspicuous part of forest vegetation in the Columbia Bottomlands area of Brazoria, Fort Bend and Wharton counties, Texas, where it occurs intermixed with ~<i>Quercus virginiana / Ilex vomitoria - Sabal minor / Carex cherokeensis - Malvaviscus arboreus var. drummondii</i> Forest (CEGL007830)$$ and ~<i>Ulmus crassifolia - Carya illinoinensis - Celtis laevigata / Chasmanthium sessiliflorum - Carex cherokeensis</i> Floodplain Forest (CEGL002388)$$.  Accession Code: urn:lsid:vegbank.org:commConcept:36102-{68878EA4-5D91-4F0C-BF49-8305ED44A069} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 08-Nov-1999 to: ongoing
	status: accepted Community's Parent: Fraxinus pennsylvanica - Platanus occidentalis - Ulmus americana Coastal Plain Floodplain Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.689129 NatureServe Explorer   Code: CEGL007926   Translated: Green Ash - (Water Hickory) / Eastern Swamp-privet / Savanna Panicgrass Wet Floodplain Forest   Common: Columbia Bottomlands Ash Flat   Scientific: Fraxinus pennsylvanica - (Carya aquatica) / Forestiera acuminata / Phanopyrum gymnocarpon Wet Floodplain Forest (convergence) and Synonyms: (similar) Fraxinus pennsylvanica - (Carya aquatica) / Forestiera acuminata / Phanopyrum gymnocarpon Depression Forest (similar) CEGL007926 (similar) Fraxinus pennsylvanica - (Carya aquatica) / Forestiera acuminata / Phanopyrum gymnocarpon Depression Forest