United States, Michigan, Chippewa, bank of the Tahquamenon river at lower falls,
46.603629 -85.207328 +-798m.
Shaded ground, Frequent.
sheet - 1
"Identified by A. S. Hitchcock." [palea 10.5-11.5 mm long; blades villous above; awns ± spreading -- why not E. wiegandii? Spikelets often 3 at a node. All other E. riparius in Michigan is in southernmost part of state.]