Cynosurus echinatus

{{Short description|Species of grass}}

{{Speciesbox

|image = Cynosurus echinatus.jpg

|genus = Cynosurus

|species = echinatus

|authority = L.

}}

Cynosurus echinatus is a species of grass known by the common names bristly dogstail grass,{{PLANTS|id=CYEC|taxon=Cynosurus echinatus|access-date=17 January 2016}} rough dog's-tail{{BSBI 2007 |access-date=2014-10-17 }} and hedgehog dogtail. It is native to southern Europe, and it is known in the Americas and Australia as an introduced species and sometimes a noxious weed. An herbicide-resistant strain can be found growing as a weed in canola and wheat fields in Chile.[https://web.archive.org/web/20020706214303/http://www.weedscience.org/Case/Case.asp?ResistID=5104 Group A/1 resistant hedgehog dogtail (Cynosurus echinatus)] This is an annual grass growing 10 to 50 centimeters tall. The inflorescence is a rounded or oval cluster or series of clusters of spikelets. The fertile spikelet has an awn up to a centimeter long. The awns clumped closely together into a tuft gives the inflorescence its bristly, hairy appearance.

File:Cynosurus_echinatus_inflorescence.jpg