| Poaceae | |
Piresia goeldii
| Swallen | Phytologia 11(3): 153 | 1964 |
| Poaceae | |
Piresia leptophylla
| Soderstr. | Brittonia 34(2): 206–208, f. 4 | 1982 |
| Poaceae | |
Piresia macrophylla
| Soderstr. | Brittonia 34(2): 203–205, f. 3 | 1982 |
| Poaceae | |
Piresia palmula
| M.L.S. Carvalho & R.P. Oliveira | Syst. Bot. 37(1): 134–138 | 2012 |
| Poaceae | |
Piresia sympodica
| (Döll) Swallen | Phytologia 11(3): 153 | 1964 |
| Poaceae | |
Piresia tenella
| M.L.S. Carvalho & R.P. Oliveira | Bot. J. Linn. Soc. 192(1): 93, f. 1, 3 | 2020 [2019] |