GRANULOSULA Murrill, Lloydia 6: 211. 1943. non Cooke, Grevellia 17: 40. date ?
GUAYARENSIS Singer in Singer et al. Beih. Nova Hedwidgia 77: 205, figs. 7, 8. 1983.
HETEROCHROA Singer in Singer et al., Beih. Nova Hedwidgia 77: 273, fig. 27. 1983.
HETEROSPORA Beardslee, Mycologia 26: 259. 1934.
HETEROSPORA Beardslee var. CREMEA Murrill, Bull. Torrey Bot. Club 67: 57. 1940.
HETEROSPOROIDES Murrill, Lloydia 7: 310. 1944.
HIBBARDAE Burlingham, Mycologia 13: 132, pl. 7, fig. 4, fig. 8. 1921.
HIXSONII Murrill, Lloydia 6: 212. 1943.
HUMBOLTII Singer, Mycopathol. Mycol. App1. 20: 245. 1963.
HUMIDICOLA Burlingham, N. Am. Fl. 9: 230. 1915.
HYGROPHYTICA Pegler in Pegler and Singer, Mycotaxon 12: 92. 1980.
IDROBOI Singer, Mycopathol. Mycol. Appl. 20: 245. 1963.
IMATATRIX Homola and Shaffer, Mycologia 68: 429, figs. 1-7. 1975.
INCARNATA Morgan, J. Cincinnati Soc. Nat. Hist. 6: 187. non Quelet, C. R. Ass. Fr. Avanc Sci. ll: 396. 1882.
INCARNATICEPS Murrill, Bull. Torrey Bot. Club 67: 277. 1940.
INCONSTANS Burlingham, Mycologia 28: 255, fig. 2a. 1936. non Murrill, Lloydia 8: 266. 1945.
INCONSTANS Murrill, Lloydia 8: 266. 1945. non Burlingham, Mycologia 28: 255, fig. 2-a. 1936.
INEDULIS Murrill, Lloydia 7: 311. 1944.
INOPINA Shaffer, Mycologia 56: 208, figs. 3, 7. 1964.
INSIGNIS Burlingham, N. Am. Fl. 9: 212. 1915. non Quelet, C. R. Ass. Fr. Avanc Sci. ??: ???. 1887.
INSIGNITA Burlingham, Mycologia 31: 497. 1939.
INTEGRA RUBROTINCTA Peck, Annual Rep. New York State Mus. 54: 164. 1901.
KAUFFMANIANA (Singer) Singer, Bull. Soc. Mycol. France 55: 258. 1939.
KAUFFMANII J. Schaeffer, Ann. Mycol. 31: 345. 1933.
KELLYI Burlingham, Mycologia 16: 17, pl. 5, fig. 1. 1924.