Andropogon annulatusAndropogon papillosusDichanthium nodosumDichanthium papillosum Dichanthium annulatum is a species of grass in the family Poaceae.

It is native to tropical Asia, the Middle East, and parts of Africa.

[3] It has been introduced to many other parts of the world for cultivation, and it has become naturalized in some places, such as Australia.

It does not require fertilizer but it does respond well to a small amount of supplemental nitrogen.

[3] While it can aggressively outcompete many other plants, it thrives with some types of companion species, such as the grasses Bothriochloa insculpta, Dichanthium aristatum, and D. caricosum, and the legumes Medicago sativa, Stylosanthes hamata, and S.

[4] This grass is host to a number of fungus species, such as Balansia sclerotica, Cerebella andropogonis, Chaetostroma atrum, Cochliobolus cymbopogonis, Curvularia andropogonis, C. lunata, C. robusta, Ellisiella caudata, Jamesdicksonia obesa, Phyllachora ischaemi, Physoderma dichanthicola, Pithomyces graminicola, Puccinia cesatii, P. duthiae, P. propinqua, Sclerospora dichanthicola, Sphacelotheca annulata, S. andropogonis-annulati, Tolyposporella obesa, Uredo susica, Uromyces andropogonis-annulati, U. clignyi, and Ustilago duthiei.

[4] It is an invasive species in Fiji, Hawaii, and New Caledonia and has displaced native grasses in large areas of south Texas.

[8] It is cited as a factor in the decline of the slender rushpea (Hoffmannseggia tenella) a federally listed endangered plant of the United States.