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Digitaria cognata is a species of grass known by the common names fall witchgrass,[2] Carolina crabgrass,[3] and mountain hairgrass.[4]

Digitaria cognata
1913 illustration[1]
Conservation status

Secure  (NatureServe)
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Poaceae
Subfamily: Panicoideae
Genus: Digitaria
Species:
D. cognata
Binomial name
Digitaria cognata
(Schult.) Pilg.
Synonyms

Leptoloma cognatum


Description


This grass is a perennial without rhizomes. The roots are shallow. The erect stems grow up to 56 centimeters tall. The stem bases are tough and hairy.[2] The leaves are up to 12.6 centimeters long.[5] They are narrow, with "one side wavy, and the other smooth".[3] The inflorescence is a purple-tinged panicle with single-flowered spikelets.[3]


Uses


This grass provides graze for livestock and wild ungulates, and birds eat the seeds.[3]


References


  1. illustration from Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 1: 124
  2. Digitaria cognata. USDA Plants Profile.
  3. Digitaria cognata. USDA NRCS Plant Fact Sheet.
  4. Digitaria cognata. NatureServe.
  5. Digitaria cognata. Archived 2016-03-04 at the Wayback Machine Grass Manual Treatment.




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