Name requested: Phacidium multivalveAnnales Mycologici 15 (5): 324. Mycotaxon 21: 22, 81, 82, 138, 139, 140, 141. Sydowia 20 (1-6): 290.
Homotypic synonym: Xyloma multivalveMycotaxon 21: 99, 138, 141.
Heterotypic synonym: Phacidiostroma multivalveAnnales Mycologici 15 (5): 325, 327. Mycotaxon 21: 17, 138, 141.