| Name | Collema pycnocarpum Nylander |
| Authorship | Nylander |
| Rank | Species |
| Placed in | Collema (Weber) F. H. Wiggers |
| GUID | urn:lsid:indexfungorum.org:names:383416 |
| Holdings | 11 Specimens held in the Harvard University Herbaria identified as Collema pycnocarpum Nylander |
| Identification made in | [no date] (11) |
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