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
Citation:
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. May 26, 2018. https://michiganflora.net/genus.aspx?id=Phleum.