Cynosurus

Both species are introduced from Europe and are rarely established locally in disturbed places.

1. Inflorescence elongate, more than 4 times as long as broad; awns less than 2 mm long.

C. cristatus

1. Inflorescence ± ovoid, less than 4 times as long as broad (excluding awns); awns (at least the longest) 1 cm or more long.

C. echinatus

All species found in Cynosurus

Cynosurus cristatusDOGTAIL 
Cynosurus echinatusDOGTAIL 

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 13, 2017. http://michiganflora.net/genus.aspx?id=Cynosurus.