| To Codes in: | A | B | C | D | E | F | G | H | I | K | L | M | N | O | P | R | S | T | U | V | W | Z |
| FEAI | Festuca airoides | tufted fescue |
| FEAR2 | Festuca arizonica | Arizona fescue |
| FELI | Festuca ligulata | Guadalupe fescue |
| FEPA2 | Festuca paradoxa | cluster fescue |
| FERU2 | Festuca rubra | red fescue |
| FESTU | Festuca sp. | fescue |
| FESU3 | Festuca subverticillata | nodding fescue |
| FEVE | Festuca versuta | Texas fescue |