ASTRINGENS Burlingham, N. Am. F1. 9: 227. 1915.
ATRATA Shaffer, Brittonia 14: 262, pl. 9, figs. 4, 6. 1962.
ATROPURPUREA Peck, Annual Rep. New York State Mus. 41: 75. 1888. non (Kromb.) Britz. Bot. Zkl. 54: 99. 1893.
ATROVIOLACEA Burlingham, N. Am- F1 9: 220. 1915.
AUCARUM Singer, Beih. Nova Hedwidgia 51. 243. 1975.?
AURANTIOLUTEA Kauffman, Rep. Michigan Acad. Sci. 11: 81. 1909.
AUSTRALIROSEA Murrill, Lloydia 8: 264. 1945.
AUSTRODELICA Singer, Beih. Nova Hedwidgia 29: 352. 1969.
BALLOUII Peck, New York State Mus. Bull. 167: 31, pl. XI, figs. 1-4. 1913.
BASIFURCATA Peck, Annual Rep. New York State Mus.. 38: 90. 1885.
BATISTAE Singer,Ann. Soc. Biol. Pernambuco. 13: 228. 1955.
BEARDSLEEI Burlingham, Mycologia 31: 492. 1939.
BETULINA Burlingham, N. Am. F1. 9: 227. 1915.
BICOLOR Burlingham, Mycologia 5: 311. 1913.
BLACKFORDAE Peck, New York State Mus. Bull. 139: 42. 1910.
BLANDA Burlingham, N. Am. F1. 9: 213. 1915.
BOREALIS Kauffman, Rep. Michigan Acad. Sci. 11: 69. 1909.
BOYACENSIS Singer, Mycopathol. Mycol. Acad. Sci. 20: 247. 1963.
BRASILIENSIS Singer, Pap. Michigan Acad. Sci. 32: 108. 1948.
BREVIPES Peck, Annual Rep. New York State Mus. 43: 20, pl. 2, figs. 5-8. 1890.
BREVIPES Peck var. ACRIOR Shaffer, Mycologia 56: 223. fig. 17. 1964.
BREVIPES Peck var. MEGASPORA Shaffer, Mycologia 56: 226. fig. 18. 1964.
BRUNNEIPES Murrill, Lloydia 7: 310. 1944.
BRUNNEOLA Burlingham, N. Am. Fl. 9: 233. 1915.
BRUNNESCENS Murrill, Lloydia 6: 264. 1945.
BURKEI Burlingham, Mycologia 16: 21, pl. 5, fig. 7. 1924.