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Limnodea, with the common name Ozark grass,[4] is a genus of North American plants in the grass family.[1][5][6][7]

Ozark grass
Scientific classification

L. arkanasana
Binomial name
Limnodea arkansana
Type species
Greenia arkansana
  • Greenia Nutt. 1837, illegitimate homonym not S. Wallman 1791
  • Sclerachne Torr. ex Trin. 1841, illegitimate homonym not R. Br. 1838
  • Thurberia Benth. 1881, illegitimate homonym not A. Gray 1854
  • Greenia arkansana Nutt.
  • Limnas arkansana (Nutt.) Trin. ex Steud.
  • Sclerachne arkansana (Nutt.) Torr. ex Trin.
  • Thurberia arkansana (Nutt.) Benth. ex Vasey
  • Cinna arkansana (Nutt.) G.C.Tucker
  • Sclerachne pilosa Trin.
  • Limnas pilosa (Trin.) Steud.
  • Muhlenbergia hirtula Steud.
  • Stipa demissa Steud.
  • Thurberia pilosa (Trin.) Vasey
  • Limnodea arkansana var. pilosa (Trin.) Scribn.

The only known species of the annual bunchgrass is Limnodea arkansana.


Limnodea arkansana is native: to northeastern Mexico in Coahuila and Tamaulipas states; and to the South-Central/Midwestern and Southeastern United States, in Arkansas (including the Ozarks), Oklahoma, East Texas, Louisiana, Mississippi, Alabama, South Carolina, and the Florida Panhandle.[3][8][9][10][11]

It grows in dry and usually sandy soils, in prairie, open woodland, and river bank habitats; and in disturbed areas. Along the Gulf Coast it is found on upper beaches where shells accumulate, and on maritime shell mounds and middens.


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