HYPOXYLON GREGALE (SCHWEIN.: FR.) M. A. CURTISThe status of the name is uncertain.
Hypoxylon gregale (Schwein.: Fr.) M. A. Curtis, Geol. Nat. Hist. Surv. North Carolina, pt. III, p. 140. 1867.
º Sphaeria gregalis Schwein.: Fr. apud Fr., Elench. Fung. II, p. 68. 1828.
º Valsaria gregalis (Schwein.: Fr.) Sacc., Syll. Fung. I, p. 752. 1882.
U.S.A.: Carolina, Syn. 1211, decorticated wood (PH, HOLOTYPE of Sphaeria gregalis); North Carolina, Salem, decorticated wood (UPS 57701, ISOTYPE of Sphaeria gregalis); Pennsylvania, Bethlehem, Syn. 1211, Collins Coll. 40, decorticated wood, as Sphaeria gregalis (PH).
An undoubted Hypoxylon. Type specimens are so depauperate that its identity cannot be established for certain. They may represent overmature specimens of H. lenormandii Berk. & M. A. Curtis. Sphaeria gregalis Schwein. was independently published by Fries (1828) and Schweinitz (1832). Saccardo (1882a) considered Fries' S. gregalis Schwein. to be a Valsaria Ces. & De Not. and Schweinitz's to be a Hypoxylon. The type of S. gregalis at UPS is an autographed specimen of Schweinitz which is doubtless a duplicate of the type of S. gregalis at PH.