Print Report

CEGL007824 (Quercus stellata, Ulmus alata) / Schizachyrium scoparium - Symphyotrichum patens var. patentissimum Wooded Grassland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: (Post Oak, Winged Elm) / Little Bluestem - Late Purple Aster Wooded Grassland

Colloquial Name: Ouachita Basic Shale/Sandstone Glade

Hierarchy Level:  Association

Type Concept: This glade community occurs on the Mazarn Shale and related substrates of the Ouachita Mountains of Arkansas and Oklahoma (including some mixed shale and sandstone examples). The flora has many neutral to basic substrate-preferring components. These glades may occur as extensive areas of herbaceous vegetation with intervening strips of related woodland vegetation. A few stunted individuals of Quercus stellata, Ulmus alata, Carya texana, Fraxinus americana, Pinus echinata, and Juniperus virginiana may be present. Ceanothus herbaceus, Celtis tenuifolia, Crataegus spathulata, Rhus aromatica, Sideroxylon lanuginosum, Symphoricarpos orbiculatus, and Yucca arkansana are present as low shrubs. Perennial grasses and graminoids include Schizachyrium scoparium, Danthonia spicata, Panicum virgatum, Dichanthelium commutatum, Elymus sp., and Scleria oligantha. Forbs include Asclepias hirtella, Asclepias viridiflora, Camassia scilloides, Cheilanthes lanosa, Cheilanthes tomentosa, Coreopsis tinctoria, Croton capitatus, Croton monanthogynus, Croton michauxii var. ellipticus, Echinacea pallida, Eriogonum longifolium var. longifolium, Gamochaeta sp., Glandularia canadensis, Stenaria nigricans, Lechea tenuifolia, Manfreda virginica, Monarda russeliana, Opuntia humifusa, Pycnanthemum tenuifolium, Ruellia humilis, Salvia azurea var. grandiflora, Selaginella arenicola ssp. riddellii, Silphium laciniatum, Solidago sp., Stylosanthes biflora, Tephrosia virginiana, Thelesperma filifolium, Tragia betonicifolia, and Vernonia sp. The inclusion of Symphyotrichum patens var. patentissimum as a nominal indicates a relatively western (e.g., Ouachita) distribution. Lichens are in abundance, hanging from the red-cedars and forming large patches in shady areas. The presence of numerous basophilic elements and the mixed nature of the substrate distinguishes this from sandstone glades.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: Described from Winding Stair Mountain area off Talimena Scenic Drive, and along the Glover River in Oklahoma, with additional data from surveys of V. Bates (1993). More information is needed about the global range of this community, as well as the substrate(s) on which it is found.

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

Physiognomy and Structure: No Data Available

Floristics: The flora has many neutral to basic substrate-preferring components. These glades may occur as extensive areas of herbaceous vegetation with intervening strips of related woodland vegetation. A few stunted individuals of Quercus stellata, Ulmus alata, Carya texana, Fraxinus americana, Pinus echinata, and Juniperus virginiana may be present. Ceanothus herbaceus, Celtis tenuifolia, Crataegus spathulata, Rhus aromatica, Sideroxylon lanuginosum, Symphoricarpos orbiculatus, and Yucca arkansana are present as low shrubs. Perennial grasses and graminoids include Schizachyrium scoparium, Danthonia spicata, Panicum virgatum, Dichanthelium commutatum, Elymus sp., and Scleria oligantha. Forbs include Asclepias hirtella, Asclepias viridiflora, Camassia scilloides, Cheilanthes lanosa, Cheilanthes tomentosa, Coreopsis tinctoria, Croton capitatus, Croton monanthogynus, Croton michauxii var. ellipticus (= Croton willdenowii), Echinacea pallida, Eriogonum longifolium var. longifolium, Gamochaeta sp., Glandularia canadensis, Stenaria nigricans (= Hedyotis nigricans), Lechea tenuifolia, Manfreda virginica, Monarda russeliana, Opuntia humifusa (= var. humifusa), Pycnanthemum tenuifolium, Ruellia humilis, Salvia azurea var. grandiflora, Selaginella arenicola ssp. riddellii (= Selaginella riddellii), Silphium laciniatum, Solidago sp., Stylosanthes biflora, Tephrosia virginiana, Thelesperma filifolium, Tragia betonicifolia, and Vernonia sp. The inclusion of Symphyotrichum patens var. patentissimum (= Aster patens var. patentissimus) as a nominal indicates a relatively western (e.g., Ouachita) distribution. Lichens are in abundance, hanging from the red-cedars and forming large patches in shady areas. The presence of numerous basophilic elements and the mixed nature of the substrate distinguishes this from sandstone glades.

Dynamics:  No Data Available

Environmental Description:  This glade community occurs on the Mazarn Shale and related substrates of the Ouachita Mountains of Arkansas and Oklahoma (including some mixed shale and sandstone examples).

Geographic Range: This community is found in the Ouachita Mountains of eastern Oklahoma and western Arkansas.

Nations: US

States/Provinces:  AR, OK




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: < IE5a. Ouachita Shale Glade (Allard 1990)
< IE6b. Interior Upland Shale Barren (Allard 1990)
= Shale / Sandstone Glade (Bates 1993)

Concept Author(s): M. Pyne and A.S. Weakley

Author of Description: M. Pyne and A.S. Weakley

Acknowledgements: No Data Available

Version Date: 12-10-98

  • 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.
  • Bates, V. 1993. Ouachita National Forest rare plant inventory: Volume 1, Overview of plant communities. The Nature Conservancy, Little Rock, AR. 144 pp.
  • Campbell, J. J. N., S. Walker, and D. Zollner. 1996. Technical assessment to: An ecological assessment of forest lands in Arkansas and Oklahoma proposed for inclusion into the Ouachita National Forest and Cossatot National Wildlife Refuge. Unpublished report by The Nature Conservancy. 114 pp.
  • NatureServe Ecology - Southeastern United States. No date. Unpublished data. NatureServe, Durham, NC.
  • Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.