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Helietta parvifolia - Acacia rigidula - Ebenopsis ebano - Leucophyllum frutescens Shrubland | Southeastern Ecology Working Gro...
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Name: Helietta parvifolia - Acacia rigidula - Ebenopsis ebano - Leucophyllum frutescens Shrubland Reference: Southeastern Ecology Working Gro... Description: This mostly evergreen shrubland or low forest association occurs on xeric caliche / calcareous sandstone slopes and bluffs in the upper (drier) portions of the lower Rio Grande valley, with most known occurrences on the Goliad Formation (Miocene) in southern Hidalgo, Starr, and possibly Zapata counties. It is characterized by the presence of Helietta parvifolia and Ebenopsis ebano (= Pithecellobium ebano) in the broken low (less than 4 m tall) canopy, although for several years after hard freezes Helietta may be represented only by short stump sprouts. Shorter shrubs form a denser stratum 1-2 m tall, and generally no clear dominance is established by any of the dozens of species present. Wide-ranging generalists like Acacia berlandieri, Acacia rigidula, Guajacum angustifolium, Leucophyllum frutescens, Parkinsonia texana, Salvia ballotiflora, and Forestiera angustifolia are often common, but more restricted subtropical components occur as well, including Mortonia greggii, Turnera diffusa var. aphrodisiaca, Gochnatia hypoleuca, and Malpighia glabra. The ground layer is sparse or essentially absent, except during short periods following significant rainfall events. This community occurs as well in nearby Tamaulipas and/or Nuevo Leon.  Accession Code: VB.CC.19462.HELIETTAPARVIFO Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 01-Oct-1997 to: 17-Nov-2014
	status: accepted Community's Parent: Acacia rigidula - Leucophyllum frutescens - Acacia berlandieri Shrubland Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: Barreta - Chaparro-Prieto - Texas Ebony - Cenizo Shrubland   UID: ELEMENT_GLOBAL.2.684728 NatureServe Explorer   Common: Barretal   Code: CEGL004923   Scientific: Helietta parvifolia - Acacia rigidula - Ebenopsis ebano - Leucophyllum frutescens Shrubland (convergence) and Synonyms: (undetermined) Helietta parvifolia - Acacia rigidula - Ebenopsis ebano - Leucophyllum frutescens Shrubland