| Poa attica Boiss. & Heldr., 1854 |
| Poa aturensis Kunth, 1815 |
| Poa bajaensis Soreng, 2002 |
| Poa biformis Kunth, 1831 |
| Poa bigelovii Vasey & Scribn., 1885 |
| Poa boliviensis Hack., 1912 |
| Poa borealis (J. Presl) Kunth, 1833 |
| Poa brasiliensis Spreng., 1825 |
| Poa brevipaniculata Scribn. & T.A. Williams, 1899 |
| Poa brevipaniculata var. subpallida T.A. Williams, 1899 |
| Poa bromoides (Leyss.) Mérat, 1821 |
| Poa caerulescens Michx. ex P. Beauv., 1812 |
| Poa californica Munro ex Coult., 1885 |
| Poa calycina (J. Presl) Kunth, 1833 |
| Poa calycina var. mathewsii (Ball) Refulio, 2012 |
| Poa canbyi (Scribn.) Howell, 1903 |
| Poa capillaris L., 1753 |
| Poa capitata Nutt., 1835 |
| Poa carinata Poir., 1804 |
| Poa chamaeclinos Pilg., 1906 |