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Helietta parvifolia - Acacia rigidula - Ebenopsis ebano - Leucophyllum frutescens Shrubland | NatureServe Biotics 2019
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Name: Helietta parvifolia - Acacia rigidula - Ebenopsis ebano - Leucophyllum frutescens Shrubland
Reference: NatureServe Biotics 2019
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 <i>Helietta parvifolia</i> and <i>Ebenopsis ebano</i> in the broken low (less than 4 m tall) canopy, although for several years after hard freezes <i>Helietta</i> 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 <i>Acacia berlandieri, Acacia rigidula, Guaiacum angustifolium, Leucophyllum frutescens, Parkinsonia texana, Salvia ballotiflora</i>, and <i>Forestiera angustifolia</i> are often common, but more restricted subtropical components occur as well, including <i>Mortonia greggii, Turnera diffusa var. aphrodisiaca, Gochnatia hypoleuca</i>, and <i>Malpighia glabra</i>. 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: urn:lsid:vegbank.org:commConcept:33692-{030F6D93-C1E3-40E7-B759-447A94398B0D}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 01-Oct-1997 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.684728 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL004923
  Translated: Barreta - Blackbrush Acacia - Texas Ebony - Texas Barometerbush Shrubland
  Common: Barreta - Chaparro-Prieto - Ébano - Cenizo Shrubland
  Scientific: Helietta parvifolia - Acacia rigidula - Ebenopsis ebano - Leucophyllum frutescens Shrubland
(convergence) and Synonyms:
(similar) CEGL004923
(similar) Helietta parvifolia - Acacia rigidula - Ebenopsis ebano - Leucophyllum frutescens Shrubland
(similar) Helietta parvifolia - Acacia rigidula - Ebenopsis ebano - Leucophyllum frutescens Shrubland