Culms with numerous glandular pits. Sheaths with glandular pits; blades with glandular pits. Spikelets 0.6-1.4 mm wide. Upper glumes 1-1.4 mm; lemmas 1.8-2 mm. Caryopses 0.8-1 mm.
Eragrostis pilosa var. perplexa is known from widely scattered locations in Wyoming, North Dakota, Nebraska, Colorado, and northwestern Texas.