| Stereocaulon melanopotamicum I.M. Lamb | ISOTYPE | O-L-000155 | Click on image for full size (36 MPx)
| Protolog: Lamb,IM, Journal of the Hattori Botanical Laboratory 43: 296 (1977)
| | Locality: ARGENTINA: Rio Negro, zwischen Lago Frias und Frias Glacier, 1950., Lamb, I.M. 6086
| Currently accepted name: Stereocaulon melanopotamicum I.M. Lamb
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