| Distichlis stricta (Torr.) Rydb., 1905 |
| Distichlis stricta var. laxa (Vasey ex Beal) Fawc. & West ex Munz, 1935 |
| Distichlis texana (Vasey) Scribn., 1899 |
| Distichlis thalassica É. Desv., 1854 |
| Distomomischus Dulac, 1867 |
| Distomomischus myuros (L.) Dulac, 1867 |
| Doellochloa Kuntze, 1891 |
| Dolichochaete (C.E. Hubb.) J.B. Phipps, 1964 |
| Donacium Fr., 1843 |
| Donax P. Beauv., 1812 |
| Donax arundinaceus P. Beauv., 1812 |
| Donax donax (L.) Asch. & Graebn., 1898 |
| Donax viridiflavescens (Poir.) Roem. & Schult., 1817 |
| Drymochloa Holub, 1984 |
| Drymonaetes Fourr., 1869 |
| Duthieinae Pilg. ex Potztal, 1969 |
| Dybowskia Stapf, 1919 |
| Eatonia Raf., 1819 |
| Eatonia annua Suksd., 1906 |
| Eatonia densiflora E. Fourn., 1886 |