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CEGL004558 Quercus havardii - (Penstemon ambiguus, Croton dioicus) / Sporobolus giganteus Scrub
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Havard Oak - (Gilia Beardtongue, Grassland Croton) / Giant Dropseed Scrub
Colloquial Name: Havard Oak / Giant Dropseed Sand Scrub
Hierarchy Level: Association
Type Concept: This community occupies stabilized dunes of quartz sand in the eastern Trans-Pecos of Texas, and parts of eastern New Mexico Quercus havardii dominates the shrub layer, especially on dune summits and upper slopes. Other shrubs include Penstemon ambiguus, Croton dioicus, Stillingia sylvatica, Calylophus berlandieri ssp. berlandieri, and Yucca campestris. The herb stratum is dominated by Sporobolus giganteus, with Calamovilfa gigantea, Andropogon hallii, Panicum havardii, and Paspalum setaceum also present and locally common. This community is influenced by the processes of dune formation, migration, and stabilization; it is favored by disturbance, while more stabilized areas are dominated by Prosopis glandulosa var. glandulosa and Artemisia filifolia.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Examples at Monahans Dunes State Park, Ward and Winkler counties, Texas. New Mexico added based on feedback from Este Muldavin (pers. comm. 2019).
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: Quercus havardii dominates the shrub layer, especially on dune summits and upper slopes. Other shrubs include Penstemon ambiguus, Croton dioicus, Stillingia sylvatica, Calylophus berlandieri ssp. berlandieri, and Yucca campestris. The herb stratum is dominated by Sporobolus giganteus, with Calamovilfa gigantea, Andropogon hallii, Panicum havardii, and Paspalum setaceum (= var. stramineum) also present and locally common.
Dynamics: This community is influenced by the processes of dune formation, migration, and stabilization; it is favored by disturbance, while more stabilized areas are dominated by Prosopis glandulosa var. glandulosa and Artemisia filifolia.
Environmental Description: This community occupies stabilized dunes of quartz sand in the eastern Trans-Pecos of Texas.
Geographic Range: This community occupies stabilized dunes of quartz sand in the eastern Trans-Pecos of Texas and into eastern New Mexico.
Nations: US
States/Provinces: NM, TX
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.686257
Confidence Level: Low - Poorly Documented
Confidence Level Comments: No Data Available
Grank: G2?
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 2 Shrub & Herb Vegetation Class | C02 | 2 |
| Subclass | 2.B Temperate & Boreal Grassland & Shrubland Subclass | S18 | 2.B |
| Formation | 2.B.2 Temperate Grassland & Shrubland Formation | F012 | 2.B.2 |
| Division | 2.B.2.Nb Central North American Grassland & Shrubland Division | D023 | 2.B.2.Nb |
| Macrogroup | 2.B.2.Nb.4 Sand Bluestem - Prairie Sandreed - Sand Sagebrush Great Plains Sand Grassland & Shrubland Macrogroup | M052 | 2.B.2.Nb.4 |
| Group | 2.B.2.Nb.4.a Southern Great Plains Sand Grassland & Shrubland Group | G888 | 2.B.2.Nb.4.a |
| Alliance | A4112 Havard Oak / Little Bluestem Prairie Scrub Alliance | A4112 | 2.B.2.Nb.4.a |
| Association | CEGL004558 Havard Oak - (Gilia Beardtongue, Grassland Croton) / Giant Dropseed Scrub | CEGL004558 | 2.B.2.Nb.4.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: No Data Available
- Diamond, D. D. 1993. Classification of the plant communities of Texas (series level). Unpublished document. Texas Natural Heritage Program, Austin. 25 pp.
- Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.
- TPWD [Texas Parks and Wildlife Department]. 1996. Department lands inventory: Plant community survey of Monahans Sandhills State Park. Unpublished draft document. Texas Parks and Wildlife Department, Parks Division, Austin. 15 pp. plus apps.