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CEGL004343 Diamorpha smallii - Minuartia glabra Sandstone Glade

Type Concept Sentence: This is an annual herbaceous type of Cumberland sandstone flatrock glade; it is a zonal component of sandstone flatrock communities of the southern Cumberland Plateau in the United States.


Common (Translated Scientific) Name: Elf Orpine - Appalachian Stitchwort Sandstone Glade

Colloquial Name: Cumberland Sandstone Flatrock Glade

Hierarchy Level:  Association

Type Concept: This association is a type of Cumberland sandstone flatrock glade. This annual herbaceous community is a zonal component of sandstone flatrock communities of the southern Cumberland Plateau of Tennessee (Franklin, Grundy, Putnam, and Marion counties) and possibly adjacent Alabama and Georgia. The community is limited to hollowed-out areas in sandstone outcrops in which water seasonally collects. Diamorpha smallii and Minuartia glabra are characteristic plants of this association. Diamorpha is at least a seasonal aspect dominant. Examples are known from the vicinity of the University of the South at Sewanee, Franklin County, Tennessee. Similar vegetation may be found in Alabama and Georgia.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: There are records of the nominal species Diamorpha smallii from sandstone outcrops in other Tennessee counties on the Cumberland Plateau (Cumberland, Hamilton, Rhea), but it is not known if these represent occurrences of the vegetation type as well. The association is attributed to Obed Wild and Scenic River (NPS), although Diamorpha smallii is not present in the sandstone glades there.

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

Physiognomy and Structure: No Data Available

Floristics: Diamorpha smallii and Minuartia glabra are characteristic plants of this association. Diamorpha smallii is at least a seasonal aspect dominant.

Dynamics:  No Data Available

Environmental Description:  This annual herbaceous community is a zonal component of sandstone flatrock communities of the Cumberland Plateau of Tennessee.

Geographic Range: This rare vegetation type is restricted to a limited area of the southern Cumberland Plateau in Tennessee (Franklin, Grundy, Putnam, and Marion counties)adjacent Georgia, and possibly Alabama. There are records of the nominal species, Diamorpha smallii, from sandstone outcrops in other Tennessee counties on the Cumberland Plateau (Cumberland, Hamilton, Rhea), but it is not known if these represent occurrences of the vegetation type as well.

Nations: US

States/Provinces:  AL?, GA, TN




Confidence Level: Moderate

Confidence Level Comments: No Data Available

Grank: G2G3

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Sedum smallii (Perkins 1981)
< IE8a. Interior Upland Sandstone Glade (Allard 1990)
< Sandstone Rock Outcrop (Schmalzer and DeSelm 1982)

Concept Author(s): M. Pyne

Author of Description: M. Pyne and C.W. Nordman

Acknowledgements: No Data Available

Version Date: 06-28-18

  • 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.
  • GNHP [Georgia Natural Heritage Program]. 2018. Unpublished data. Georgia Natural Heritage Program, Wildlife Resources Division, Georgia Department of Natural Resources, Social Circle.
  • Perkins, B. E. 1981. Vegetation of sandstone outcrops of the Cumberland Plateau. M.S. thesis, University of Tennessee, Knoxville. xi plus 121 pp.
  • Schmalzer, P. A., and H. R. DeSelm. 1982. Vegetation, endangered and threatened plants, critical plant habitats and vascular flora of the Obed Wild and Scenic River. Unpublished report. USDI National Park Service, Obed Wild and Scenic River. 2 volumes. 369 pp.
  • Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.
  • TDNH [Tennessee Division of Natural Heritage]. 2018. Unpublished data. Tennessee Division of Natural Heritage, Nashville, TN.