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CCDB → Bryophytes → Pottiaceae → Astomum
| Taxon name | Status | Median (n) |
| Astomum crispum (Hedw.) Hampe | Accepted | 13 |
| Astomum ludovicianum (Sull.) Sull. | Synonym of Weissia ludoviciana (Sull.) W. D. Reese & B. A. E. Lemmon | 13 |
| Astomum muhlenbergianum (Sw.) Grout | Synonym of Weissia muhlenbergiana (Sw.) W. D. Reese & B. A. E. Lemmon | 13 |