| Name | Stereocaulon tomentosum f. botryocarpum (H. Magnusson) I. M. Lamb |
| Authorship | (H. Magnusson) I. M. Lamb |
| Rank | Forma |
| Placed in | Stereocaulon tomentosum Fries |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Stereocaulon tomentosum f. botryocarpum (H. Magnusson) I. M. Lamb |
| Identification made in | 1954 (1) |
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