Aegilops cylindrica, also known as jointed goatgrass, is an annual grass seed native to Southern Europe and Russia that is part of the tribe Triticeae, along with wheat and some other cereals.

[3] Jointed goatgrass is a winter annual grass seed native to Southern Europe and Russia,[4][2] It is considered a problem weed in United States, where it is now widely spread across western and central regions.

[2][4] It entered the US at several different times and at different locations,[2] however the first was possibly in the late 19th century when Mennonite settlers from Russia brought Turkey winter wheat to Kansas.

[3] In 1986, jointed goatgrass had been reported as having infected less than 1% of winter wheat fields in seven counties in Nebraska, yet it was rated one of the ten most troublesome weeds, concerning 13% of respondents to a 1984 farmer survey.

[2] Jointed goatgrass and winter wheat are genetically linked through a D genome which allows them to live in cold, continental climates and means they are capable of cross-breeding.

[2][4] Jointed goatgrass has glabrous to scabrous glumes with upright culms and the ability to produce 50 erect flowering stalks for each isolated plant.

[2] Jointed goatgrass does have some benefits in the sense that its germplasm can be used in winter wheat to improve its tolerance to environmental stresses, diseases and insects.

[3] Cattle in parts of the Central Great Plains are able to graze on it as well as winter wheat, and jointed goatgrass can even be ground into feed for other animals.

[3] However, the success of DRB depends upon its ability to survive which is affected by environmental factors such as soil series, temperature, moisture, and sunlight exposure.