Sphaeria clavulata Schwein., Trans. Amer. Philos. Soc New Ser. 4, 188. 1832.
Xylaria clavulata (Schwein.) Berk. & M. A. Curtis, J. Linn. Soc. 10: 380. 1868.
Torrubia clavulata (Schwein.) Peck, Ann. Rep. N. Y. State Mus. 28: 70. 1876.
Cordyceps clavulata (Schwein.) Ellis & Everh., North Amer. Pyrenom. p. 61. 1892.
= Cordyceps pistillariiformis Berk. & Broome, Ann. Mag. Nat. Hist. Ser. 3, 7: 451. 1861 [as C. ‘pistillariaeformis’].
Torrubia pistillariiformis (Berk. & Broome) Cooke, Handb. Brit. Fungi 2: 771. 1871.