| Name | Collema undulatum var. granulosum Degelius |
| Authorship | Degelius |
| Rank | Variety |
| Placed in | Collema undulatum Laurer ex Flotow |
| GUID | urn:lsid:indexfungorum.org:names:414915 |
| Citation | 1954 Symb. Bot. Upsal. 13(2): 369 |
| Holdings | 6 Specimens held in the Harvard University Herbaria identified as Collema undulatum var. granulosum Degelius |
| Identification made in | [no date] (6) |
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