Seven new species of smut fungi (Ustilaginomycotina)

Seven new species, Anthracoidea breweri on Carex breweri and C. subnigricans from USA, Anthracoidea griseae on Carex grisea from USA, Farysia echinulata on Carex fischeri from Kenya, Tilletia avenastri on Avenastrum turgidulum from Lesotho, Urocystis anemonae-narcissiflorae on Anemone narcissiflora from Canada, Ustanciosporium venezuelanum on Rhynchospora sp. from Venezuela, and Ustilago buchloëformis on Bouteloua repens from Mexico are described and illustrated