| Name | Pyrenothrix Riddle |
| Authorship | Riddle |
| Rank | Genus |
| NomenclaturalStatus | NomLeg |
| Placed in | Pyrenothricaceae |
| Contains | Pyrenothrix nigra Riddle Pyrenothrix sp. |
| Remarks | Type species: P. nigra Riddle |
| Citation | Dec 1917 Bot. Gaz. 64: 513 |
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