Aegilops cylindrica, also known as jointed goatgrass. is an annual grass seed that is part of the tribe Triticeae, along with wheat and some other cereals. It is not native to the United States, however it has become a serious issue as a weed since it was introduced in the late 19th century. Due to its relation to winter wheat, it is very difficult to control. Not only are the joints similar in shape and size... (Wikipedia)