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Baltisphaeridium tuberatum
| tuberatum | |
| Downie, C. (1958) | |
| Downie, C. and Sarjeant, W.A.S. (1965) | |
| other | |
| tuberatum | |
| Downie, C. (1958) | |
| Downie, C. and Sarjeant, W.A.S. (1965) | |
| other | |