"Chrysopogon nigritanus, more widely known by the taxonomic synonym Vetiveria nigritana, or the common name black vetivergrass, is a perennial grass species of the Poaceae family and therefore is also a monocotyledon. More specifically, Vetiveria nigritana is a very thick and tall type of grass that is deeply rooted within the ground and is usually used to protect crops and deter soil erosion."@en . . . . . . . . "*Andropogon nigritanus" . "*Vetiveria nigritana" . . . "Chrysopogon nigritanus"@en .