| Phaseolus latidenticulatus Harms, 1921 |
| Phaseolus laxiflorus Piper, 1926 |
| Phaseolus leiosepalus Piper, 1926 |
| Phaseolus leiospermus Torr. & A. Gray, 1838 |
| Phaseolus leptophyllus G. Don, 1832 |
| Phaseolus leptostachyus Benth., 1837 |
| Phaseolus leptostachyus var. intonsus (Piper) Freytag, 2002 |
| Phaseolus leptostachyus var. leptostachyus Benth., 1837 |
| Phaseolus leptostachyus var. lobatifolius Freytag, 2002 |
| Phaseolus leptostachyus var. nanus Freytag, 2002 |
| Phaseolus leptostachyus var. pinnatifolius Freytag, 2002 |
| Phaseolus leucanthus Piper, 1926 |
| Phaseolus limensis Macfad., 1837 |
| Phaseolus linearis Kunth, 1824 |
| Phaseolus linearis Sessé & Moc. ex G. Don, 1832 |
| Phaseolus linearis Sessé & Moc., 1890 |
| Phaseolus linearis var. latifolius Benth., 1859 |
| Phaseolus longepedunculatus Mart. ex Benth., 1837 |
| Phaseolus longepedunculatus f. boliviensis Hassl., 1923 |
| Phaseolus longepedunculatus f. glabratus Hassl., 1923 |