Andropogon ternarius

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Andropogon ternarius
Andropogon ternarius.jpg
Status TNC G5.svg
Secure  (NatureServe) [1]
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Poaceae
Subfamily: Panicoideae
Genus: Andropogon
Species:
A. ternarius
Binomial name
Andropogon ternarius

Andropogon ternarius is a species of grass known by the common names split bluestem, splitbeard bluestem, silver bluestem, and paintbrush bluestem. It is native to the southeastern, east-central, and south-central parts of the United States, where it occurs from New Jersey south to Florida and west to Kansas, Oklahoma, and Texas. [2]

This perennial grass forms tufts of branching stems reaching 120 [2] to 150 [3] centimeters in maximum height. The inflorescence is made up of pairs of feathery racemes, each of which contains pairs of spikelets. Each pair is made up of one fertile spikelet and one sterile. The fertile spikelet has an awn up to 2.5 centimeters long. The spikelets are coated in very long, silvery hairs. [2] [3] [1] In the Great Plains, the grass blooms in August through October. In the Carolinas blooming occurs in September and October and in Louisiana the grass blooms in the fall. [2] One variety of this species, the Florida endemic var. cabanisii, has been treated as a separate species, A. cabanisii. [3] [1]

This grass grows in pine and oak forests and on prairie. It is dominant in the pine savanna around the Texas-Louisiana border. It grows in disturbed habitat types such as grazed pastures, ditches, and abandoned crop fields. Old fields in the southern United States are often colonized with the grass and its relative, broomsedge (Andropogon virginicus). In the ecological succession of abandoned fields in the region, the bluestem grasses grow after various annual and perennial weeds but before pines move in to shade them out. [2]

Cattle graze on the grass. Northern bobwhite are known to nest in bunches of it. [2]

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References

  1. 1 2 3 "Andropogon ternarius". NatureServe Explorer. The Nature Conservancy.
  2. 1 2 3 4 5 6 Walsh, Roberta A. (1994). "Andropogon ternarius". Fire Effects Information System (FEIS). US Department of Agriculture (USDA), Forest Service (USFS), Rocky Mountain Research Station, Fire Sciences Laboratory.
  3. 1 2 3 Campbell, Christopher S. "Andropogon ternarius". Grass Manual Treatment. Archived from the original on June 13, 2012.