Rufous grasshopper of "G. rufus" through the use of feces as a source of DNA. It has been documented to eat plants of the genus "Bromus", the species "Holcus lanatus", and the subfamily Pooideae, all within the family Poaceae. Poaceae is a family of flowering monocots whose members are referred to as true grasses. Pooideae includes lawn grasses and cereals such as wheat and barley. "Bromus" is composed of grasses called brome grasses or cheat grasses. "Holcus lanatus", more commonly known as Yorkshire fog or velvet grass, is a species of perennial pasture grass noted for its hairy texture. The rufous grasshopper
Organisms involved in water purification and to generate toxins in some cases. The choice of organism depends on the local climate different species and other factors. Indigenous species usually tend to be better adapted to the local environment. The choice of plants in engineered wet-lands or managed lagoons is dependent on the purification requirements of the system and this may involve plantings of varying plant species at a range of depths to achieve the required goal. Plants purify water by consuming excess nutrients and by providing surfaces upon which a wide range of other purifying organisms can live. They also are effective oxygenators in sunlight.