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Jointed Goatgrass (Aegilops cylindrica)  

The "joints" of Jointed Goatgrass.
The "joints" of Jointed Goatgrass.

Jointed goatgrass is a winter annual grass, vegetatively similar to wheat in the seed stage. The leaves are alternately arranged with auricles at their base and occasional hairs extending along the margins. The flower spike is cylindrical and distinct from wheat. Two to four flowers are arranged in each of the spikelets which form the elongate cylindrical spike. It is jointed in appearance and each joint contains one to three seeds. The glumes on the top spikelet have long awns. The seed of jointed goatgrass ripens before winter wheat and shatters easily. (From the Washington State Noxious Weed Control Board)
Fibrous root of Jointed Goatgrass.
Fibrous root of Jointed Goatgrass.

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