Phleum

1. Awns of glumes (at least the longest ones) 2.5–3 mm long; spike-like panicle 2–4 cm long.

P. alpinum

1. Awns rarely as long as 2 mm; spike-like panicle (1–) 4–14 (–31) cm long.

P. pratense

All species found in Phleum

Phleum alpinumMOUNTAIN TIMOTHY 
Phleum pratenseTIMOTHY 

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. March 28, 2017. http://michiganflora.net/genus.aspx?id=Phleum.