Erioneuron
Erioneuron is a genus of New World plants in the grass family native to southern North America and southern South America. They are sometimes called by the common name woollygrass. These are tufty grasses with hairy spikelets.
; SpeciesErioneuron avenaceum Tateoka - shortleaf woollygrass - United States, Mexico Erioneuron pilosum Nash - hairy woollygrass - United States, Mexico, Argentina, Bolivia
; formerly included Erioneuron pulchellum - ''Dasyochloa pulchella''