| Name | Stereum abietinum f. calyculus Berkeley & M. A. Curtis |
| Authorship | Berkeley & M. A. Curtis |
| Rank | Forma |
| Placed in | Stereum abietinum (Persoon) Fries: Fries |
| Citation | 1849 Hooker's J. Bot. Kew Gard. Misc. 1: 238 |
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