ATKINSON'S SPECIES OF HELMINTHOSPORIUM ON GRASSES FROM ALABAMA

Abstract

Four of Atkinson's Alabama records are confirmed: Helminthosporium ravenelii on Sporobolus poiretii, H. leersii on Leersia virginica, H. flagelloideum on Panicum sp., and H. tuberosum on Secale cereale. H. tuberosum is an earlier synonym for H. secalis, the conidial state of Pyrenophora secalis. The collection of H. inconspicuum on Secale cereale is H tuberosum. The records of H. turcicum on Sorghum halepense, Cinna arundinacea, and Elymus sp. are based respectively on H. sorghicola, H. leersii. and H. sorokinianum, although the last two appeared to be saprophytic.