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Prolixosphaeridium parvispinum ssp. deirense
| parvispinum ssp. deirense | |
| Davey, R.J., Downie, C., Sarjeant, W.A.S. and Williams, G.L. (1966) | |
| Lentin, J.K. and Williams, G.L. (1985) | |
| junior synonym | |