Lexemuel Ray Hesler (20 February 1888 – 20 November 1977) was an American mycologist. He was the son of Clinton F. Hesler and Laura Iris (née Youngblood). He obtained his B. A. degree with Wabash College in 1911 and his Ph.D. at the University of Cornell in 1914.
Hesler LR. (1929) "A preliminary report on polypores of eastern Tennessee", Journal of the Tennessee Academy of Science 4: 3–10Hesler LR. (1936) "Notes on southern Appalachian fungi", Journal of the Tennessee Academy of Science 6: 107–122Hesler LR. (1937) "Notes on southern Appalachian fungi: II.", Journal of the Tennessee Academy of Science 12: 239–254Hesler LR. (1937) "A preliminary list of the fungi of the Great Smoky Mountains", Castanea 2: 45–58Hesler LR. (1957) "Notes on southeastern Agaricales: I.", Journal of the Tennessee Academy of Science 32: 298–307Hesler LR. (1960) "A study of Russula types: ", Memoirs of the Torrey Botanical Club 21: 1–59Hesler LR. (1961) "A study of Julius Schaeffer's Russulas", Lloydia 24: 182–198Hesler LR. (1961) "A Study of Russula types: 2", Mycologia 53: 605–625Hesler LR, Smith AH. (1963) North American Species of HygrophorusHesler LR, Smith AH. (1965) North American species of CrepidotusHesler LR. (1967) Entoloma in Southeastern North AmericaSmith AH, Hesler LR. (1968) The North American species of PholiotaHesler LR. (1969) North American species of GymnopilusHesler LR, Smith AH. (1979) North American Species of LactariusGymnopilus luteus (Peck) HeslerGymnopilus terrestris HeslerGymnopilus ventricosus (Earle) HeslerHygrophorus bakerensis A.H. Smith & HeslerHygrophorus flavescens (Kauffman) A.H. Smith & HeslerHygrophorus marginatus var. olivasceus A.H. Smith & HeslerHygrophorus subaustralis A.H. Smith & Hesler, now Albomagister subaustralis (A.H. Smith & Hesler) Sánchez-García, Birkebak & MathenyHygrophorus subsalmonius A.H. Smith & HeslerLactarius argillaceifolius A.H. Smith & HeslerLactarius cinereus A.H. Smith & HeslerLactarius quietus Hesler & A. H. SmithPholiota highlandensis (Peck) Hesler & A.H. SmithPholiota veris (A.H. Smith & Singer) Hesler & A.H. Smith