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CEGL002136 Quercus laceyi - Juniperus ashei Woodland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Lacey Oak - Ashe''s Juniper Woodland

Colloquial Name: Lacey Oak - Ashe''s Juniper Woodland

Hierarchy Level:  Association

Type Concept: This woodland is dominated by Quercus laceyi and Juniperus ashei. The canopy is 6-12 m high and dominated by Quercus laceyi with lesser amounts of Juniperus ashei, which becomes more important in the understory. Quercus buckleyi, Ulmus crassifolia, Quercus muehlenbergii, and Quercus fusiformis may occur as minor components in the canopy, while Ilex vomitoria, Callicarpa americana, Ptelea trifoliata, Ungnadia speciosa, Ilex decidua, and Cornus drummondii may be variously present in the understory. This open woodland occurs as small stands, generally less than 10 ha, and is often interspersed with grassy openings. This community occurs on rocky canyon slopes or on shallow soils that have developed over limestone.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This woodland is known from the southern and southwestern portion of the Edwards Plateau of central Texas and is threatened by conversion to pasture, residential development, and by the pressures of deer overpopulation and the overstocking of livestock. Grazing of goats and cows prevents reproduction of oak species. Lacey Oak Woodland grades into ~Taxodium distichum - Platanus occidentalis Edwards Plateau Floodplain Forest (CEGL002104)$$ on narrow floodplains and into woodlands on steep slopes dominated by Juniperus ashei and Quercus spp. This community is similar to Quercus buckleyi-dominated woodlands that occur in similar habitats. Other woodland communities dominated by Quercus laceyi are known to occur in Texas. Further work is necessary to distinguish these types.

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: The canopy is 6-12 m high and dominated by Quercus laceyi with lesser amounts of Juniperus ashei, which becomes more important in the understory. Quercus buckleyi, Ulmus crassifolia, Quercus muehlenbergii, and Quercus fusiformis may occur as minor components in the canopy, while Ilex vomitoria, Callicarpa americana, Ptelea trifoliata, Ungnadia speciosa, Ilex decidua, and Cornus drummondii may be variously present in the understory (Riskind and Diamond 1988). This open woodland occurs as small stands, generally less than 10 ha, and is often interspersed with grassy openings.

Dynamics:  No Data Available

Environmental Description:  This community occurs on rocky canyon slopes or on shallow soils that have developed over limestone.

Geographic Range: This woodland is known from the southern and southwestern portion of the Edwards Plateau of central Texas.

Nations: US

States/Provinces:  TX




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: G2

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: ? IB3b. Lacey Oak Woodland (Allard 1990)

Concept Author(s): K.D. Patterson

Author of Description: K.D. Patterson

Acknowledgements: No Data Available

Version Date: 01-01-93

  • Allard, D. J. 1990. Southeastern United States ecological community classification. Interim report, Version 1.2. The Nature Conservancy, Southeast Regional Office, Chapel Hill, NC. 96 pp.
  • Diamond, D. D. 1993. Classification of the plant communities of Texas (series level). Unpublished document. Texas Natural Heritage Program, Austin. 25 pp.
  • Diamond, D., B. Amos, T. Cook, R. Edwards, W. Elliot, R. Evans, and K. Kennedy. 1992. Endangered, threatened, and watchlist of natural communities of Texas. Texas Organization for Endangered Species. Austin, TX. 14 pp.
  • Orzell, S. L., principal investigator. 1990. Texas Natural Heritage Program inventory of national forest and national grasslands in Texas. Texas Parks and Wildlife Department, Natural Heritage Program, Austin.
  • Riskind, D. H., and D. D. Diamond. 1988. An introduction to environments and vegetation. Pages 1-15 in: B. B. Amos and F. R. Gehlbach, editors. Edwards Plateau vegetation: Plant ecological studies in central Texas. Baylor University Press, Waco, TX.
  • Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.