Name requested: Schizothyrium perexiguumAnnales Mycologici 15 (5): 297. Mycotaxon 21: 195, 196. 45: 349. Persoonia 1 (1): 3. Transactions of the Mycological Society of Japan 27 (1): 1, 3, 4, 7, 9. 28 (2): 212.
Homotypic synonym: Microthyriella perexiguaAnnales Mycologici 15 (5): 299, 327. Mycotaxon 21: 195.
Homotypic synonym: Phacidium perexiguumAnnales Mycologici 15 (5): 299, 327. Mycotaxon 21: 195. Transactions of the Mycological Society of Japan 27 (1): 3.
Heterotypic synonym: Microthyriella rubiAnnales Mycologici 21 (1-2): 15. 25 (3-4): 361. 34 (4-5): 396. 38 (2-4): 357. Mycologia 25 (4): 237, 238, 257. Sydowia 4 (1-6): 401.