Agrostis hyemalis (Walt.) B.S.P.
Agrostis hyemalis var. hyemalis
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Positive identification of A. hyemalis requires that the specimen have a fully developed inflorescence. Although there is little information on when this occurs in the one Minnesota population, a best estimate is June.
Welby Smith (MNDNR), 2018
Harvey, M. J. 2007. Agrostis. Pages 633-662 in Flora of North America Editorial Committee, editors. Flora of North America north of Mexico. Volume 24. Oxford University Press, New York.
Marinelli, J., and J. M. Randall, editors. 1996. Invasive plants: weeds of the global garden. Brooklyn Botanic Garden, Brooklyn, New York. 111 pp.
Minnesota Department of Natural Resources. 2005. Field guide to the native plant communities of Minnesota: the eastern broadleaf forest province. Ecological Land Classification Program, Minnesota County Biological Survey, and Natural Heritage and Nongame Research Program. Minnesota Department of Natural Resources, St. Paul, Minnesota. 394 pp.
NatureServe. 2009. NatureServe Explorer: an online encyclopedia of life [web application]. Version 7.1. <http://www.natureserve.org/explorer>. Accessed 26 June 2009.
Reznicek, A. A., E. G. Voss, and B. S. Walters. 2011. Michigan Flora Online. University of Michigan. <http://www.michiganflora.net/species.aspx?id=1995>. Accessed 22 January 2013.